Yachting Monthly

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Propeller rope cutter test

  • Emrhys Barrell
  • April 14, 2015

At best, a rope around the propeller is inconvenient. At worst, it’s deadly. Emrhys Barrell tests seven rope cutters to find out if they really can keep your prop turning

Propeller rope cutter test

Rope cutters can free you from a knotty situation, but which is best for your boat? Credit: Graham Snook/YM

‘Cast off the bow line,’ I called. I waited for the line to sink and engaged forward gear to leave our marina berth in the Mediterranean. I should have waited longer. Suddenly, the engine died as the fixed mooring line was now firmly wrapped around the three-blade propeller of our Gib’Sea 32. Back in our berth, I cut an 8ft length from the end of a hosepipe, attached one end to a stanchion, put the other in my mouth and stepped off the stern to investigate [THIS IS NOT RECOMMENDED].

The line was soon freed and we left with nothing more serious than dented pride and a slightly shorter hosepipe, but a boat rope wrapped around the prop can often have more serious consequences. On a lee shore in a gale, or in foggy shipping lanes, it could easily end in disaster. Whether it’s a stray sheet tail or an abandoned fishing net, once you lose propulsion, you lose a lot of options.

Fitting a rope cutter is a good way of keeping your options open, but how effective are they? We located a test tank and put seven different cutters to the test, to see how good they are at slicing through ropes, fishing nets, wire and plastic – and still keep your prop turning. This is the most comprehensive and detailed study of rope cutters published in a UK sailing magazine.

How rope cutters work

There are at least eight different makes of cutter on the UK market. Three are scissors-type cutters, four use discs and one is a shaver.

The scissors-type was the first on the market. It comprises a rotating cutter clamped to the shaft, with two or more blades, plus a fixed cutter bolted to the P-bracket. As the prop rotates, obstructions are drawn down into the scissor blades and cut or chopped up.

The advantage is a positive cutting action, which also shreds weed and netting. There are various drawbacks: it’s a complex installation and you may need to fit a spacer in the gearbox coupling. Every two years or so, you will have to replace the thin plastic bearings, on which the fixed cutter spins on the shaft. Scissor cutters cause more drag than some other types and are the most expensive to buy.

Because of the loads on the fixed block of the scissor-types, they can usually only be fitted to metal P-brackets, stern tubes or hulls. GRP is not strong enough to stop the tapped machine-screws pulling out, though in some cases a plate can be made up to take the block, which is then glassed or bolted to the hull or tube. A scissor cutter is the only option for saildrives.

This type of cutter is a thin stainless steel disc with a sharpened edge. The disc can be split and clamped round the shaft, or solid, in which case the prop has to be removed and the disc slid up the shaft. In both cases the cutter is held in place with a grub screw. As the shaft spins, any rope or debris that is drawn down to the disc is gradually cut through as it passes over the knife-edge.

The advantages are simple installation and low cost, plus minimal drag underway. Disadvantages include the lack of a positive cutting action – discs can struggle to cut through weed and plastic sheeting. Disc types can be fitted to any shaft-drive boat. For a long-keel yacht with a keel-hung rudder, you may have to widen the prop aperture on the leading edge of the rudder.

The shaver is a new development comprising fixed blades mounted on a block attached to the P-bracket or stern tube. GRP stern tubes may need some strengthening, depending on build quality. A plastic spool or cylinder is slid over the shaft and attached to the front boss of the prop, running under the cutter blades. As rope or debris is encountered, it is forced into the gap between the blades and the prop. As the blades spin, the rope is gradually shaved through.

Advantages include reduced load on the structure and transmission during cutting, plus minimal loss of boat speed. The disadvantage is complex installation and the need for accurate fitting in a machine shop. Pricewise, shavers are midway between discs and scissors, although you would have to add in the cost of machining the prop and sometimes the P-bracket, too.

How we tested the rope cutters

We explained to all eight manufacturers how our tests would be conducted and invited suppliers to send us samples and attend the test. Plastimo couldn’t provide us with a unit, so we bought one. We were unable to test the Quickutter shaver – its maker declined to participate, citing concerns over the suitability of out test tank and rig for evaluating the performance of a shaver. We would be pleased to hear of any readers’ experiences with shaver-type cutters. It’s worth noting that the RNLI has fitted Quickutters to its entire fleet of Tamar-class lifeboats.

We fitted each of the cutters in turn to the test rig’s P-bracket and shaft to see how easy this was to carry out. In theory, anyone with reasonable DIY skills can fit a cutter to their boat. In practice, you need to be confident of your abilities, especially with the scissor-action units. When it is working in anger, a scissor cutter exerts enormous loads, especially to the fixed structure it is attached to, and it is no use if it breaks free. Disc cutters put less load on the structure, but even these need to be competently fitted. If you are in any doubt, get a boatyard to fit it for you.

You could dry your boat out against an old quay wall and work with one eye on the encroaching flood-tide, but for most owners the sensible option is to haul out for the fitting. Bear in mind that a quick lift – with the boat not leaving the slings, and the yard doing the job for you – will usually cost no more than having her lifted into a cradle, ready for you to do the honours.

For the scissors-type, you will have to drill and tap the P-bracket accurately. You also need to be sure that you have the correct clearance between the P-bracket or stern bearing and the prop. This distance is critical for all cutters, but especially for the scissor-action models. Many shafts will not have enough free length exposed, in which case you will have to fit a spacer between the gearbox and the coupling to move the shaft back by the required amount. Cutter manufacturers can usually supply you with the right spacer to suit most common gearboxes.

Cutters must be spaced 6-10mm back from the P-bracket or stern tube to take up any movement as the engine goes into ahead, and to allow a flow of water through the cutless bearing. All cutters must be fitted to the parallel section of the shaft, not the taper, or they will slip. Scissor types also need to be lined up correctly, relative to the propeller blades, to reduce interference with water flow into the prop. All manufacturers recommend you use a threadlock liquid on the screws to prevent them undoing.

The test tank

Propeller rope cutter test

An electric motor powered the test rig and a window allowed us to film what went on

The tank was 1.2m long, 0.6m wide and 0.9m deep. In this was fixed a P-bracket with a cutless bearing carrying a 3.81cm (1½in) mild steel shaft with a tapered end, and a 40cm by 30cm (16in by 12in) fixed three-blade bronze prop driven by a 2.2kW electric motor.

The test materials

Propeller rope cutter test

Our test materials were a combination of line, tarp, netting and wire

The most common material encountered on passages is floating rope, either long lengths or bundles. Also common is netting of all sizes and thicknesses, and plastic sheeting, fertiliser bags or tarpaulin. Finally, you could also hit a lobster pot line.

To best replicate these materials, we took the following: three-strand polypropylene rope – 6mm, 12mm and 25mm diameter; three-strand and braided polyester – 15mm and 25mm; and three-strand 15mm nylon rope.

We also tried a wide variety of netting, from the finest monofilament, through 3mm nylon and up to 4mm polypropylene. These nets, we are assured by a UK fishing industry supplier, are what you are most likely to encounter around our coasts. The net was cut into 1m x 2m rectangles and fed into the prop.

We then took heavy-duty polytarp sheeting, also cut into 1m x 2m rectangles. This was followed by 10mm2 copper cable, and finally 1.5mm-diameter galvanised steel wire, both single strand and cable.

We started the engine in ahead, and got it running up to speed. Initially, we fed the rope into the scissor cutters and let them draw it in and cut it up. However, the disc cutters didn’t pull the rope in – there was no load on it, so they wouldn’t cut it. In a real-life situation, you would be encountering long lengths or bundles of rope, which would provide tension at the end, or the rope would get caught round your stern gear, which would also create resistance and tension.

To simulate this effect, we fed the rope from ahead of the P-bracket, with one turn taken round it, and kept a gentle tension on the end. This drew the rope down onto the blades.

If the cutters chopped the rope, we classed this as a ‘pass’. Sometimes the ropes would stall the motor, so we reversed its direction, which again you would do in real life. It should be noted that we were only using a 3hp motor. In reality, greater horsepower would make the cutting action more effective. The same techniques were applied to the netting and tarp but the wire was fed into the spinning cutter from ahead.

Propeller rope cutter test

This was the first successful cutter, developed in 1982 in the USA. A scissors-type, it comprises two spinning blades and one fixed. The blades are claw-shaped, so rope can be trapped between them as they spin, and can’t be thrown out. The blades are made from hardened 17-4PH grade stainless steel. Spurs claims this makes it sharper for longer and can deal with harder materials better. This grade of stainless is more prone to corrosion, so a small anode is fitted as standard. Fitting is straightforward, with a 16-page manual.

Propeller rope cutter test

The Spurs chopped through every type of rope instantly and the finer netting. The toughest net required reversing the engine but this is what you would do in practice. The tarpaulin was also dealt with quickly, with one reverse chewing it up completely. The copper wire was snipped in one pass, as was the steel rod. The flexible wire was cut once but the second time it jammed between the blades. In fairness, the manufacturer doesn’t claim this unit will cut wire.

Sizes: From ¾in to 6½in

Drive: Shaft only

Stripper 4*

Propeller rope cutter test

The only cutter that fits a saildrive, Ambassador Marine’s Stripper arrived on the market shortly after Spurs. This manufacturer took an alternative design for its cutters, with serrated edges claiming to hold the rope in the jaws while it is being cut. Otherwise it uses the same principle of a fixed block, machine-screwed to the P-bracket with fixed and cutting blades on the shaft. It is made of 316-grade stainless steel, unhardened. The Stripper is available in 2, 3 or 4-blade versions, depending on the number of blades on your prop. It also has the option of a venturi tube, clamped to the P-bracket, which is claimed to reduce cavitation over the prop, extending its life and reducing loss of performance underway. One other variation is jacking screws on the fixed block, which allow you to adjust its shape to different radius P-brackets.

Propeller rope cutter test

The Stripper cut all the rope quickly. On occasions free rope tended to be thrown out from the blades, but was drawn in and cut as soon as it wrapped round the shaft. Netting was quickly shredded, as was the polytarp, after one reverse. The copper wire was cut cleanly, as was the single strand steel but the steel wire tended to jam in the blades.

Sizes: From ¾in to 4in

Drive: Shaft or saildrive

Propeller rope cutter test

This new unit on the market was developed by two boat owners tired of getting ropes caught round their props and breaking their existing cutters. They looked at the current designs and claim to have made improvements. The scissors-type Gator has three blades, which are serrated and dove-tailed in shape. This is claimed to snag ropes and prevent them from being thrown outwards. They have also strengthened key areas of the construction, beefing up the sections of the rings and their locking mechanism, and adding stiffeners to the back of the blades. It is made of unhardened, 316-grade stainless steel. The fixed block also has three jacking screws.

Propeller rope cutter test

The Gator instantly chopped the rope and shredded the netting and polytarp after a reverse, with no tendency to throw it outwards. The copper wire was chopped cleanly but the steel wire tended to jam the blades after one cut.

Sizes: From 1in to 3in

Plastimo 3*

Propeller rope cutter test

A solid disc cutter, so only available in slide-on versions. Made from unhardened 316 stainless steel, it has a serrated edge that claims to give a better cutting action. The disc section was thinner than its rivals and despite being supplied as suitable for a 1½in shaft, it seemed a loose fit. Fitting it was simple, though, once you had removed the prop.

Propeller rope cutter test

The Plastimo cutter cut the rope quickly and the netting eventually. It wasn’t clear whether the serrations were a benefit, giving more of a sawing action, or a drawback, tending to snag the materials, and stall the engine. The polytarp was cut once it was held down, the serrations doing a better job than the smooth discs, but at times it got snarled up round the prop. None of the wires were cut.

Sizes: From 22mm to 80mm

Propeller rope cutter test

R&D Marine, a well-known supplier of stern gear, has recently developed a disc cutter. It features a tapered leading edge to the boss, which is machined to the outside diameter of the P-bracket. The benefit of this is that it shrouds the bracket, preventing rope from being drawn down into the gap between it and the cutter. Other features include holes through the disc, which claim to improve water flow to the prop. Made of 316 stainless, unhardened steel, it has heavier sections than its rivals.

Propeller rope cutter test

The R&D cutter cut the rope cleanly, and the netting after a couple of reverses with none of it being drawn down into the shaft. Again, the polytarp was cut as soon as tension was applied but it still hung round the blades on some occasions. Reversing removed it most times. None of the wires were cut.

Sizes: From 20-50mm

Prop Protector 3*

Propeller rope cutter test

Prop Protector

This disc cutter has been on the market for over 10 years. Available in slide-on or clamp-on versions, it is easy to fit, backed up by a four-minute installation DVD. Just drill a dimple in the shaft, then clamp the two halves together, and tighten up the grub screw. It is made from unhardened 316 stainless steel. It had the sharpest edge of all the units, and came with a plastic ring to stop you from cutting yourself during fitting and a warning notice.

Propeller rope cutter test

The Prop Protector cut the rope cleanly, and all the netting. It didn’t shred the netting but cut through it, dividing it in two, and would prevent your boat being anchored by a long length. When the polytarp was left to drift into the prop, it tended to get caught on the blades and just swirled around, but as soon as a slight amount of tension was applied, it was cut through. However, it wasn’t shredded and sometimes remained on the blades, which would reduce thrust. In practice, a large sheet would possibly apply enough drag to make the cutter work. It couldn’t cut any of the wires, though. The netting and smaller diameter ropes could sometimes be drawn down into the gap between the cutter and the P-bracket but reversing tended to loosen this.

Sizes: From 1in to 4in

Shaft knife 3*

Propeller rope cutter test

Shaft Knife

Another disc cutter, this time from TW Norris, a supplier of propellers and stern gear. This cutter was found late in the day, so it missed the main photo session. However, we were still able to put it through the tests. This slide-on unit, made from unhardened stainless steel with a smooth edge, was simple to fit.

Propeller rope cutter test

The Shaft Knife performed similarly to the other smooth-edge discs, cutting the rope and netting, plus the tarpaulin when it was held down. None of the wires was cut.

Sizes: from ¾in to 2½in

Our test clearly shows that any rope cutter will bring a definite safety benefit. Watching them in action, it was amazing how quickly they all cut through most of the debris we threw at them.

Clearly the scissors-type had the edge in what they would handle, coping with rope, netting, polytarps and even copper or thin steel wire. The disc cutters sliced through rope and netting, and made a good shot at polytarp but this could sometimes defeat them. Disc cutters could potentially have the same problem with weed.

All three scissor cutters performed well, with each one having some advantages over the other styles on test. Of the discs, the clamp-on versions have a definite fitting edge, judging by the effort required to get the prop off our test rig. The R&D cutter benefits from its tapered leading edge, which shrouds the exposed shaft.

Obviously, price, ease of fitting and your boat’s hull type have a bearing on which you choose. The scissors-type is the most costly option. The disc-types are much cheaper to buy, and the clamp-on disc versions are the easiest to fit, taking just a few moments.

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Piranha Dual Line Cutters

Start » Shop » Line/Rope Cutters » Piranha Dual Line Cutters

Where to buy Piranha Dual Line Cutters

$ 496.88 – $ 1,834.79

Tested in the rugged fishing grounds off New England and Canadian Maritimes, our Piranha Dual Line Cutters offer superior cutting performance and help protect your boat’s propeller and running gear from catastrophic failure due to entanglement in marine debris.

  • Easy to Install (10 minutes or less)
  • Dual Serrated Disc Cutters Offer Twice the Cutting Power
  • Machined from High Grade Stainless Steel and Hand-sharpened
  • Available for shaft diameters 1″ to 4 1/2″
  • Manufactured in the U.S.A.

Download: Product Sheet [PDF]

Ordering Tip : For propeller shafts greater than 3″ in diameter, please contact us to ensure proper clearance with your propeller’s hub.  See our specification and sizing chart tab below for more information.

Product Details

Product description.

These disc style line cutters feature dual-serrated edges and provide twice the cutting surface area of conventional line cutters offering you redundancy and prolonged life span.

The Piranha line cutter’s split design allows for easy installation with your boat in or out of the water.

Benefits of Piranha Dual Line Cutters:

  • Available for shaft diameters 1″ to 4 1/2″ (larger sizes available by special order)
  • Custom machining available for tapered shafts and odd sized propeller hubs.

For more information including sizing and installation instructions, please refer to our Specifications | Sizing Chart tab below.

Specifications | Sizing Chart

*Standard Sizing : Diameter and width measurements can vary depending on boat’s propeller (based on forward hub diameter). Please contact us directly to ensure correct fit.

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Shaft Shark Saildrive Model

$ 1,557.00 Original price was: $1,557.00. $ 1,323.20 Current price is: $1,323.20.

A serrated edge circular blade that cuts away any rope, weed or debris that might try to entangle your shaft & propeller.

Made in the USA.

Saildrive Model – available in three sizes.

Available as split units. Custom machining for tapered shafts is available. Please inquire.

Shaft Shark Instructions

List Price: $1557.00     |     Your Price: $1323.20

Description

Additional information.

  • Reviews (0)

Shaft Shark Saildrive Model – Protect your drive train and propeller with the best rope, line and debris cutter there is.

The SHAFT SHARK is a serrated edge circular blade machined from high quality 316L type stainless steel. It attaches to your shaft just forward of the propeller and rotates with the shaft or saildrive hub, cutting away any rope, weed or debris that might try to entangle your shaft & propeller.  The SHAFT SHARK is a two-piece / split unit and may be installed on both shafts and saildrive systems.

  • Keep your propeller free from rope, weeds and underwater debris
  • Eliminate the possibility of damage to your propeller, strut and cutlass
  • Eliminate the need for being towed due to fouled stern gear or propeller

sailboat line cutter

The SHAFT SHARK for saildrives is installed on the clean saildrive propeller hub with the cutting blade facing forward and the lock bolts aft.  It is not required to remove the propeller for installation, nor is it necessary to remove or modify the saildrive leg zinc.  The Shaft Shark is kept securely in place by the clamp action of two allen-head bolts using Vibra-Tite VC-3 or Loctite on the screws/bolts.

See complete instructions here before installing your Shaft Shark.

Model Fastener Size lbs Per Inch Allen Wrench Size
Saildrive 563, 585T M6 60.3in-lbs use 5mm Allen wrench
Saildrive 693-697 M6 60.3in-lbs use 5mm Allen wrench
Saildrive 673.6 – 680, 792 M8 146.2in-lbs use 6mm Allen wrench

Download the Shaft Shark Installation Instructions as a PDF

Weight 2 lbs
Size

SS 563 – Maxprop Easy 63mm hub, SS 585T – GORI 2-blade 85mm hub tapered, SS 673.6 – Varifold 73.6mm hub, SS 678 – Variprop GP80 78mm hub, SS 680 – Variprofile VP76 80mm hub, SS 695 – Flexofold Variprop GP107 and GP112 95mm hub, SS 696 – GORI 3-blade Volvo 2, 3-blade 2000-2019 96mm hub, SS 697 – Volvo 2, 3-blade 2019 onward 97mm hub, SS 792 – Maxprop Easy 92mm hub

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Technically engineered products designed, manufactured and distributed for marine and off grid applications.

Rope and Line Cutter Image

Rope and Line Cutter

  • Cuts Rope, Line, Weed, Stainless Steel Wire
  • Avoid entanglement and bearing failure
  • Improve crew safety
  • Reduced maintenance costs
  • Robust build
  • Product Details
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The revolutionary quicKutter© system eliminates rope and line problems.  The system has no moving parts to wear out and is easy to install. 

How does the Quickwater quicKutter© System Work?  

The Quickwater spool is fixed to the propeller between the propeller and bearing carrier to prevent the rope or line from wrapping around the shaft. It provides a surface for the rope or line to wrap around to enable the quicKutter© blades to continually cut the coils of rope or line as they form and are pressed against the quicKutter© blades.

The quicKutter© is fixed to the bearing carrier and protrudes out over the Quickwater spool surface ensuring that the clearance does not allow rope or line to pass under the blade and that rope or line is continually cut away to allow a continuous flow of water to exit from the bearing.

QuicKutter Benefits

Avoid Entanglement and Bearing Failure

Rope and line entanglement can cause bearings to overheat or damage to seals

Cuts Rope, Line, Weed, Stainless Steel Wire*

Rope and line up to 1“ (25mm) and 3/16“ (4.75mm) SS cable *with optional hardened blades 

Improve Crew Safety

Avoid possible structural damage and loss of propulsion, reduce need to dive overboard to untangle

Reduced Maintenance Costs

Increased bearing and shaft life, reduced downtime and avoid potential loss of income

Boat Speed and Performance

Streamlined design creates less turbulence, vibration and drag than other cutter designs

Rope and line up to 1“ (25mm) and 3/16“ (4.75mm) SS cable *with optional hardened blades

Australian Designed and Manufactured

Patented shaver cutter, buy Australian and support your local industry

Available in 4 sizes

Series 16 for shaft sizes 1“- 2“, Series 25 for Shaft sizes 2“- 4“, Series 32 for Shaft sizes of 4“- 6“ and series 57 for larger applications

Easily installed and fits all shaft sizes (Can be fitted to vessels with full keels).

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Sea Shield Marine Products, Inc.

Product categories

  • Commercial Anodes
  • Bow Thruster Anodes
  • Engine Anodes
  • Hull Anodes
  • Keel Cooler Anodes
  • Propeller Anodes
  • Saildrive Anodes
  • Beneteau Collars
  • Limited Clearance Collars
  • Metric Limited Clearance Collars
  • Metric SALCA
  • Metric Streamline Collars
  • Micro Limited Clearance Collars
  • Streamline Collars
  • Stern/Out-Drive Anodes
  • Trim-Tab & Rudder Anodes
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Sacrificial Anode Line Cutter Assembly

SALCA Line Cutter Anode (Zinc)

Salca – sacrificial anode line cutter assembly.

  • Easy size verification inside and outside.
  • Easy installation-deep slotted stainless steel machine screws for maximum torque.
  • Allen cap screws available upon request.
  • Plastic Keeper rings prevent screws from falling out.
  • Disc line cutter — guarding your boat against the hazard of propeller entanglement
  • Two precisely sized halves that fasten around the shaft for best protection and to eliminate the risk of spinning
  • Description

Distributors

SALCA-0750 3/4″ 1-1/4″ 2″ Anode – 2-1/2″ Blade 0.65
SALCA-0875 7/8″ 1-1/4″ 2″ Anode – 2-1/2″ Blade 0.67
SALCA-1000 1″ 1-1/2″ 2-1/4″ Anode – 3″ Blade 1.01
SALCA-1125 1-1/8″ 1-1/2″ 2-1/2″ Anode – 3-14″ Blade 1.17
SALCA-1250 1-1/4″ 1-1/2″ 2-1/2″ Anode – 3-1/8″ Blade 1.04
SALCA-1375 1-3/8″ 1-1/2″ 2-3/4″ Anode – 3-1/4″ Blade 1.26
SALCA-1500 1-1/2″ 1-1/2″ 3″ Anode – 3-1/2″ Blade 1.21
SALCA-1750 1-3/4″ 1-1/2″ 3-3/4″ Anode – 4-9/16″ Blade 2.43
SALCA-2000 2″ 1-1/2″ 3-3/4″ Anode – 4-9/16″ Blade 2.23
SALCA-2250 2-1/4″ 1-5/8″ 4″ Anode – 5″ Blade 2.78

The SALCA by Sea Shield Marine combines an anode with a line-cutter providing dual protection for your prop shaft driven vessel.

  • Stainless steel allen cap screws available upon request.
  • Innovative O-rings keep screws from falling out.
  • Individually boxed with foam insert for safety.

Dual protection below the waterline

The SALCA (Sacrificial Anode Line Cutter Assembly) is the first unit to combine a sacrificial anode and disc line-cutter to give you dual protection against corrosion and propeller entanglement. By combining an extremely durable stainless steel disc line cutter to our already reliable MIL-SPEC anodes we were able to eliminate the difficult installations and constant maintenance headaches associated with traditional line-cutters. With the SALCA, you get an all-in-one unit that’s easy to install, requires no maintenance, and is made with the highest quality materials.

The SALCA uses only the highest quality materials and alloys to make sure that you have a durable unit that will stay efficient through the life of the product. The SALCA is made up of 2 parts  – 1) a MIL-SPEC standard pressure die cast anode, and 2) an extremely durable disc line-cutter.

SALCA Frequently Asked Questions:

Simple, we’ve combined a disc line-cutter with a high-quality anode, to give boat owners better protection and less hassle. It’s not rocket science but here’s the details…

The SALCA is comprised of 2 parts: 1) A high-quality, pressure die-cast zinc or aluminum anode 2) An extremely durable Stainless Steel Disc Line-Cutter. These 2 parts combine to create a highly durable and super effective unit that’s easy to install and maintenance free, while giving you dual protection against corrosion and propeller entanglement.

The SALCA should fit easily on most props where you would usually put a Limited Clearance Collar Anode.

The short answer is NO. We designed the SALCA to fit where most Limited Clearance Collar anodes will go. We don’t like the idea of increasing the gap between the strut and the hub, because it increases the danger of causing damage or even breaking the prop.

As of the moment, the SALCA is only available in Zinc and Aluminum.

The SALCA requires very little to no maintenance at all. The SALCAs combination of an extremely durable cutting-blade and high-quality anode is meant to be a low maintenance, no hassle solution to the usual difficult and maintenance heavy issues that come with traditional line-cutters – no sharpening, no difficult installation, no constant maintenance. Just treat it like you would a regular limited clearance anode; install it properly, keep it clean, and let the SALCA do its job by giving you dual protection of an anode plus a line-cutter.

This is a great question! At Sea Shield Marine we’ve been creating the best anodes on the market for over 40 years and it really shows with the quality of the SALCA. Like all our collar anodes the SALCA is designed with a tighter tolerance to prevent spinning, and is pressure die cast to make sure it wears evenly. No line-cutter can ever guarantee 100% protection – that’s just a fact, but we can assure you that the SALCA will perform consistently over the life of the anode. Just remember to change out the SALCA regularly – as you would with any anode.

Absolutely! Yes you can. Since you never know when and how entanglement will occur – you can add to your peace-of-mind by adding a second SALCA on the shaft. Example: SALCA #1 is installed right behind the Prop, while SALCA #2 is installed directly on the Prop Shaft. Now you have quadruple protection!!! Hey, when it comes to prop protection is there really a such thing as too much protection? We’ve seen this type of installation done before with great results.

WARNING! If you have a wooden boat hull be aware of “over-zincing” which could lead to passivation.

We don’t like the word “cheap”. We like to say the SALCA is more “cost effective”. Not only does the SALCA provide the same protection of a traditional line-cutter, but you also get the added benefits of corrosion protection from the high-quality anode – which you need to install anyway. When you add up the difficult installation and the ongoing maintenance of a traditional line-cutter – you could install multiple SALCAs and still come under the cost of most line-cutters.

Yes, it’s very easy to install. You don’t need to be a professional to put this baby on. The SALCA comes in 2 parts and uses 2 simple screws (slotted fillister or allen key) to install. If you can install an anode, you can install a SALCA.

Change it out like you would any anode on your marine vessel. We can’t give out exact time periods since the longevity of your anodes is relative to the waters you frequent.

Superior Alien Light Cutting Array!!! kidding . . . Sacrificial Anode Line Cutter Assembly. It also means dual protection against corrosion and propeller entanglement.

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  • PROPELLER MOUNTED SHIP CUTTERS

Propeller Mounted Ship Cutters

How do they work.

Spurs Line Cutter Systems use the propeller’s rotation and inertial force to power the cutting action. As the offending line enters the propeller vortex, it is wound toward the propeller hub. (NOTE: It is at this point that, without SPURS installed, the line would wind itself tighter and tighter, entering into the space between propeller hub and rope guard, where it can damage the oil seals.) Instead, the line is engaged by the rotating cutter blades and delivered to the stationary cutter blade. The sudden resistance sensed by the stationary cutter forces a cam action which causes the blade to be pushed outward, meeting the rotating blade and severing the obstruction.

The cutting force increases in direct proportion to the resistance sensed by the stationary cutter assembly. This shearing action means that the cutting blades never actually come into contact with each other. Hydrophilic and bronze surface bearings maintain precise cutter positioning when a resistance occurs. With each rotation, the cutters pass each other gliding on a thin lubricating film of water or within a few thousandths of each other, thus avoiding surface wear during long passages. The stationary cutter centers itself in the cutter guides as it passes through with each revolution of the propeller.

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Propeller Mounted Systems

Until now, SPURS® has been well known for our Line, Net and Weed Cutters. Due to popular demand, we have developed the SPURS® SPACERS. The Spacers are installed between the transmission and shaft flanges to extend the shaft. The spacers are cold-rolled steel and nickel plated, tolerance .001 for all dimensions, and one inch thick (standard). Special orders can be made for thickness or size.

SPURS® manufactures cutter systems for fixed & variable pitch propeller and thruster systems.

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Should You Consider Installing a Prop Shaft Line Cutter?

Originally published in Blue Water Sailing

Every year we hear of boats that are abandoned at sea or along the coast because they have lines or sheets tangled in their props and are unable to motor to safety. On sailboats, when the rig comes down, a fouled prop is the next likely thing to happen in the now cascading series of emergencies. Yet, even with the rig over the side, you ought to be able to motor home, you ought to be able to use your engine without getting lines tangled.

And, if you are headed into high latitudes where you often find heavy weed floating in the sea, you can’t afford to lose your engine since it is what will get you home when all else fails. And, if you are headed into the waters of the developing countries, where trash and debris are often a problem in harbors and rivers, the chance of getting a length of line or debris snagged in your prop increases dramatically.

The solution is to fit your prop shaft with a cutter that is designed to slice through a piece of line, a jib sheet, a piece of polypro netting or even a heavy length of seaweed.

There are four popular brands of line cutters on the market, one of which needs to have the boat out of the water for installation and three that can be installed on your shaft by a diver.

The simplest cutter out there is the Shaft Shark sold by AB Marine. This little disc is made of 316 stainless steel and has an extremely sharp serrated blade that will saw through even the gnarliest ropes. Available in a range of sizes, the Shaft Shark is designed to stand proud of the diameter of your prop’s hub so it will carve up anything that comes its way. Yet, it also presents a very small surface to the water so it induces almost no drag while sailing.

The Shaft Shark comes as two semicircles that fit tightly together around the prop shaft. This design means that you can attach the cutter to your prop while the boat is in the water. You may need to hire a diver to do this but it will be much cheaper than hauling the boat out at a boatyard.

The Prop Protector is another dead simple line cutter that can be installed on your shaft by a diver while the boat is in the water. British designed and manufactured, this cutter has a straight cutting edge that is honed to a razor finish and will cut quickly through anything it comes in contact with. Unlike the serrated blade cutters, the protector can be removed from the shaft and sharpened, which means it will give many years of reliable service. More than 20,000 Prop Protectors have been installed worldwide.

Spurs Marine has been manufacturing and selling their eponymous line cutter for many years. A more complicated cutter, the Spurs device uses a scissors action driven by the force of the turning prop shaft to cut through rope, weeds and debris. Designed for all sizes of yachts and large vessels, the cutters are built with hardened 316 stainless and sharpened to a razor edge.

The Spurs unit comes as two parts so you don’t have to pull the prop shaft to install one on your boat. But, because the installation is a bit more complicated than the disc cutters above, you will need to install your new cutter during the annual haul out or the next time you need to apply antifouling paint. Spurs will recondition and sharpen your cutter in their factory thus extending its lifespan indefinitely.

Volvo Marine offers a Volvo line cutter that is designed to work with Volvo engines and props. The cutters have serrated edges and come as two-part units that can be installed by a diver.

If you are sailing where there are lots of crab and lobster pots, coastal fish weirs and netting, concentrations of weed or lots of flotsam and jetsam—just about everywhere—then adding a line cutter to your prop is like adding real insurance. One day the cutter can make the difference between a minor incident and a cruise-ending accident

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The Prop Protector is a simple shaft driven rope cutter, rotating with the shaft and instantly cutting any rope, weed or debris picked up or snagged by the propeller. Manufactured from high grade (316) Stainless Steel, The Line Cutter is easy to install - fully installed in minutes - with your boat out of the water or between tides. The clamp-on version can even be fitted by a diver if underwater installation is required. The Prop Protector sits on the shaft, between the propeller hub and the stern bearing, waiting to cut anything that threatens to entangle it. There are no moving parts to fail - just a razor sharp marine grade stainless steel blade - ready to slice through most marine debris. If you do not see what you are looking for, or are not sure what you need, please call us at 866-790-7767 or email us at [email protected]

Prop Protector Line Cutter 3.15" Solid

Prop Protector Line Cutter 3.15" Solid

Prop Protector Line Cutter Slide on Type... 3.15" Blade Diameter for 3/4"-1 1/4" shafts.Manufactured..

Prop Protector Line Cutter 3.15" Split

Prop Protector Line Cutter 3.15" Split

Prop Protector Line Cutter Clamp on Type... 3.15" Blade Diameter  3/4"-1" shafts.Supplied as an..

Prop Protector Line Cutter 3.35" Split

Prop Protector Line Cutter 3.35" Split

Prop Protector Line Cutter Clamp on Type... 3.35" Blade Diameter for use with 1 1/8"-1 1/4" shafts.S..

Prop Protector Line Cutter 3.74" Split

Prop Protector Line Cutter 3.74" Split

Prop Protector Line Cutter Clamp on Type... 3.74" Blade Diameter for 1 3/8"-1 1/2" shafts.Supplied a..

Prop Protector Line Cutter 3.94" Solid

Prop Protector Line Cutter 3.94" Solid

Prop Protector Line Cutter Slide on Type... 3.94" Blade Diameter for 1 1/4" and 30mm shafts.Manufact..

Prop Protector Line Cutter 3.94" Split

Prop Protector Line Cutter 3.94" Split

Prop Protector Line Cutter Clamp on Type... 3.94" Blade Diameter for use with 1 3/8"- 1 1/2" shafts...

Prop Protector Line Cutter 4.13" Split

Prop Protector Line Cutter 4.13" Split

Prop Protector Line Cutter Clamp on Type... 4.13" Blade Diameter for use with 1 3/4"-2" shafts.Suppl..

Prop Protector Line Cutter 4.57" Split

Prop Protector Line Cutter 4.57" Split

Prop Protector Line Cutter Clamp on Type... 4.57" Blade Diameter for  2 1/4"-2 1/2" shafts.Supp..

Prop Protector Line Cutter 4.72" Solid

Prop Protector Line Cutter 4.72" Solid

Prop Protector Line Cutter Slide on Type... 4.72" Blade Diameter. 1 3/4"-2" shafts.Manufactured in o..

Prop Protector Line Cutter 5.00" Split

Prop Protector Line Cutter 5.00" Split

Prop Protector Line Cutter Clamp on Type... 5.00" Blade Diameter for 1 3/4"-2" shafts.Supplied as an..

Prop Protector Line Cutter 5.90" Split

Prop Protector Line Cutter 5.90" Split

Prop Protector Line Cutter Clamp on Type... 5.90" Blade Diameter for 1 1/2"-2 1/2" shafts.Supplied a..

Prop Protector Line Cutter 7.48" Split

Prop Protector Line Cutter 7.48" Split

Prop Protector Line Cutter Clamp on Type... 7.48" Blade Diameter for 2 3/4"-4" shafts.Supplied as an..

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           call for information about our new cutter head reconditioning program. it includes                       new cobs, new bearings and new chain. (208) 882-3330,           .

This is the Mini CI Cutter. It weighs less than 10 pounds and has a 7

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Cobra Method

The Cobra Method, including cooling fire gases from a safer place outside the fire compartment, is one of the safest and most efficient firefighting options available to Fire & Rescue Services.

Our systems are designed with the needs of the customer and the truck builder in mind. Our wealth of experience allows us to guide you to ensure you receive the best technical and commercial solution available.

The purpose of Cold Cut Academy is to develop knowledge about firefighting with cutting extinguishers together with fire services and to spread and demonstrate that knowledge to fire services through first-class training and cooperation with fire service authorities.

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Fighting hidden fires without letting in more air

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Browse our training calendar for available Cobra courses. Secure your spot today!

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If you need help with support, maintenance or ordering spare parts or abrasives, we are happy to help.

Cold Cut Systems AB is world-leader in the field of Cutting Extinguishing. At present there are about 1200 Cutting Extinguisher systems installed in everything from small vans to specially built Rescue Services vehicles in more than 45 countries.

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If you have any questions, don’t hesitate to contact us.

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Most Beautiful Metro Stations in Moscow

Most Beautiful Metro Stations in Moscow

Visiting Moscow? Get yourself a metro card and explore Moscow’s beautiful metro stations. Moscow’s world-famous metro system is efficient and a great way to get from A to B. But there is more to it; Soviet mosaic decorations, exuberant halls with chandeliers, colourful paintings and immense statues. Moscow’s metro is an attraction itself, so take half a day and dive into Moscow’s underground!

The best thing to do is to get on the brown circle (number 5) line since the most beautiful metro stations are situated on this line. The only exception is the metro stop Mayakovskaya one the green line (number 2). My suggestion is to get a map, mark these metro stops on there and hop on the metro. It helps to get an English > Russian map to better understand the names of the stops. At some of the metro stops, the microphone voice speaks Russian and English so it’s not difficult at all.

Another thing we found out, is that it’s worth taking the escalator and explore the other corridors to discover how beautiful the full station is.

Quick hotel suggestion for Moscow is the amazing Brick Design Hotel .

These are my favourite metro stations in Moscow, in order of my personal preference:

1. Mayakovskaya Station

The metro station of Mayakovskaya looks like a ballroom! Wide arches, huge domes with lamps and mosaic works make your exit of the metro overwhelming. Look up and you will see the many colourful mosaics with typical Soviet pictures. Mayakovskaya is my personal favourite and is the only stop not on the brown line but on the green line.

sailboat line cutter

2. Komsomolskaya Station

Komsomolskaya metro station is famous for its yellow ceiling. An average museum is nothing compared to this stop. Splendour all over the place, black and gold, mosaic – again – and enormous chandeliers that made my lamp at home look like a toy.

sailboat line cutter

3. Novoslobodskaya Station

The pillars in the main hall of Novoslobodskaya metro station have the most colourful stained glass decorations. The golden arches and the golden mosaic with a naked lady holding a baby in front of the Soviet hammer and sickle, make the drama complete.

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4. Prospect Mira Station

The beautiful chandeliers and the lines in the ceiling, make Prospekt Mira an architectural masterpiece.

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5. Belorusskaya Station

Prestigious arches, octagonal shapes of Socialistic Soviet Republic mosaics. The eyecatcher of Belorusskaya metro station, however, is the enormous statue of three men with long coats, holding guns and a flag.

sailboat line cutter

6. Kiyevskaya Station

The metro station of Kiyevskaya is a bit more romantic than Belorusskaya and Prospect Mira. Beautiful paintings with classical decorations.

sailboat line cutter

7. Taganskaya Station

At the main hall Taganskaya metro station you will find triangle light blue and white decorations that are an ode to various Russians that – I assume – are important for Russian history and victory. There is no need to explore others halls of Taganskaya, this is it.

sailboat line cutter

8. Paveletskaya Station

Another and most definitely the less beautiful outrageous huge golden mosaic covers one of the walls of Paveletskaya. I would recommend taking the escalator to the exit upstairs to admire the turquoise dome and a painting of the St Basil’s Cathedral in a wooden frame.

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Travelling with Moscow’s metro is inexpensive. You can have a lot of joy for just a few Rubbles.

  • 1 single journey: RMB 50 – € 0,70
  • 1 day ticket: RMB 210 – € 2,95

Like to know about Moscow, travelling in Russia or the Transsiberian Train journey ? Read my other articles about Russia .

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Wow! It is beautiful. I am still dreaming of Moscow one day.

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It’s absolutely beautiful! Moscow is a great city trip destination and really surprised me in many ways.

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My partner and I did a self guided Moscow Metro tour when we were there 2 years ago. So many breathtaking platforms…I highly recommend it! Most of my favorites were along the Brown 5 line, as well. I also loved Mayakovskaya, Arbatskaya, Aleksandrovski Sad and Ploshchad Revolyutsii. We’re heading back in a few weeks and plan to do Metro Tour-Part 2. We hope to see the #5 stations we missed before, as well as explore some of the Dark Blue #3 (Park Pobedy and Slavyansky Bul’var, for sure), Yellow #8 and Olive #10 platforms.

That’s exciting Julia! Curious to see your Metro Tour-Part 2 experience and the stations you discovered.

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Line Cutter

  • Thread starter Ed
  • Start date Aug 12, 2001
  • Hunter Owner Forums
  • Ask A Hunter Owner

About to order a new boat Hunter 306, shluld I have a line cutter installed on the prop shaft? I sail in Mystic Ct and the number of lobster pots are unbelivable. Any input?  

Definitely If you really analyze the bad accidents boats have, in an extraordinary number of times, when things really get out of hand is when the prop gets fouled. IMHO, a line cutter should be right up there in the most installed safety equipment. For some reason, not many people have them, but I have had mine for about eleven years, and would never have a boat without one. They are also great for kelp, etc.  

Aldo Lozano

Line cutter? Hummm... First time hear about it, but then, Tim, I am a very new sailor. In my line of work you see them in front of the helicopters... How they work and were you get them, Tim? Thanks, Aldo [email protected]  

I thought these were a gimmic until I hit a winter log earlier this year. My boat alreay had one on it. It Works Well.  

Don Alexander

Stripper A UK magazine tested them all using ropes and bits of netting. Stripper is best - and dearest. Spurs came second and is a little cheaper. The flat disk types with just a sharp edge hardly did anything at all - they don't cost much either. I fitted a Stripper but also carry the head from a long handled hedge lopper which I have adapted to fit on the end of an extending boathook. Bought very cheaply in a gardening shop and works with a string. The theory is to hook the line and sever it without needing to pull it to the surface. I am paranoid about getting caught on a string of lobster pots whilst running downwind and/or down tide. There would be no way to get the mainsail down and nobody on board strong enough to pull the boat back against the forces of wind and water. However, as with all insurances when you have them the need never seems to arise. Regards, Don.  

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VESSEL REVIEW | Sinichka – Electric commuter boats designed for Russia’s Moskva River

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A series of three new electric monohull commuter ferries have already begun operational sailings on the Moskva River in the Russian capital Moscow.

Built by Russian shipyard Emperium, sister vessels Sinichka , Filka , and Presnya – all named after rivers in Moscow – are being operated by the Moscow Department of Transport and Road Infrastructure Development (Moscow Deptrans). They are the first units of a planned fleet of 20 vessels that will serve the capital city and other nearby communities. The new ferry system will be the water transport system to be operated on the Moskva River in 16 years.

Each vessel has a welded aluminium hull, an LOA of 21 metres, a beam of 6.2 metres, a draught of only 1.4 metres, a displacement of 40 tonnes, and capacity for 80 passengers plus two crewmembers. Seating is available for 42 passengers on each ferry, and the main cabins are also fitted with USB charging ports, wifi connectivity, tables, toilets, and space for bicycles and scooters. The cabin layout can be rearranged to allow the operator to adjust the distances between the seats and to install armrests of varying widths.

sailboat line cutter

An open upper deck is also accessible to passengers and is the only area on each ferry where smoking is allowed.

The ferries are all of modular construction with each ferry’s wheelhouse, main cabin, and other structural elements being built as complete, separate components. This enables the ferries to be easily dismantled for transport to anywhere in Russia by rail and then quickly re-assembled within seven days.

The ferries are also ice-capable. Recently completed operational trials on the Moskva showed that the vessels can also easily navigate under mild winter conditions with broken surface ice, though year-round operations are planned for the entire fleet.

The ferries are each fitted with 500kWh lithium iron phosphate battery packs that supply power to two 134kW motors. This configuration can deliver a maximum speed of 11.8 knots, a cruising speed of just under 10 knots, and a range of 150 kilometres.

Emperium said the transfer of rotation of electric motors to the propeller is carried out by direct drive. As a propulsion installation, a pulling rotary propeller-steering column with double screws is used. The installation of double pulling screws, with similar power, allows an operator to increase the efficiency of the propulsion system to deliver a slightly higher speed or to reduce energy consumption. This arrangement also provides the ferries with enhanced manoeuvrability necessary for navigating in close quarters.

The batteries themselves have projected service lives of 10 to 12 years and are fitted with safety features such as built-in fire extinguishers and gas vents. Quick-disconnect features allow the batteries to be easily removed for replacement or maintenance.

Some of our readers have expressed disquiet at our publication of reviews and articles describing new vessels from Russia. We at Baird Maritime can understand and sympathise with those views. However, despite the behaviour of the country’s leaders, we believe that the maritime world needs to learn of the latest developments in vessel design and construction there.

Click here to read other news stories, features, opinion articles, and vessel reviews as part of this month’s Passenger Vessel Week.

Type of vessel: Commuter ferries
Flag: Russia
Operator: Moscow Department of Transport and Road Infrastructure Development, Russia
Builder: Emperium, Russia
Hull construction material: Aluminium
Length overall: 21 metres
Beam: 6.2 metres
Draught: 1.4 metres
Propulsion: 2 x 134 kW
Maximum speed: 11.8 knots
Cruising speed: 10 knots
Range: 150 kilometres
Batteries: Lithium iron phosphate, 500 kWh
Accommodation: Cabin; toilets; bicycle/scooter area
Crew: 2
Passengers: 80
Operational area: Moskva River, Russia

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Photo: Wikimedia Commons/Béria L. Rodríguez

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Tags: Emperium Filka Moscow Moscow Department of Transport and Road Infrastructure Development Moskva River Presnya Russia Sinichka WBW newbuild

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Us facing ‘cuban missile crisis in space’ as russia plots anti-satellite nukes, rep. mike turner warns.

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WASHINGTON – America is on the brink of a new Cuban Missile Crisis — this time in space — as Russia develops nuclear anti-satellite armaments while the Biden administration twiddles its thumbs, House Intelligence Committee Chairman Mike Turner said Thursday.

Turner (R-Ohio) called on President Biden to crank up the pressure to prevent Moscow from launching the weapon — which could wipe out everything from GPS to cell service and the internet, eliminating many of the conveniences of modern life — during an event at the Center for Strategic and International Studies in the nation’s capital.

“The Space Age began when Russia launched Sputnik in 1957. The eyes of the world turned to the sky and wondered how space and technology would now change life on Earth,” he said. “The Space Age will end when Russia launches its nuclear anti-satellite weapon into orbit.”

US House Intelligence Chairman Rep. Mike Turner (R-Ohio)

Turner added that Space Force Chief of Staff Gen. B. Chance Saltzman has referred to the feared launch date as “Day Zero” due to the massive impact it would have on military and civilian life.

“From that day forward, the assumption on Earth must be that in order to preserve our economic, social, and military structures, we must have an alternative to space. Right now, there isn’t one,” he said. “Trillions and trillions of dollars and time we don’t have will be required to build duplicative and redundant systems just to preserve what we accomplished in the Space Age.”

‘ Putin thrives in secrecy’

The Biden administration reluctantly admitted in February that the US intelligence committee had confirmed Russia has been working for years to send nukes into space, which Turner said only happened after “overwhelming, bipartisan” pressure from Congress “to make public the emerging threat.”

“The fact that it took the House Intelligence Committee to do so , I think, shows you some of the waste of time that the administration has had – the fact that they don’t have a response to this,” he said.

But Turner argued the reveal did not go far enough, leaving Americans in the dark about the progress and viability of Russia’s capability.

Sputnik I

“The administration says that (Russia’s) developing this , and what I call on them to do, is to tell the world what is the status of this in development,” he said. “Does that mean that this is a drawing on a drafting board? Does this mean this is a research project in a lab? … Does it mean that there’s nuclear warheads that have been created? Is there a satellite?

“All of these are the natural resulting questions for the administration and they’re avoiding this discussion, because they’re avoiding having to admit that they’re not really doing anything,” he added.

While it remains unclear what stage of development the potential game-changing weapon is in, Turner pitched several ideas he said could prevent unpredictable Russian President Vladmir Putin from deploying it.

Rep. Turner called on President Biden to crank up the pressure to prevent Russia from launching the weapon.

First, he said, the White House must do more to spell out for the American public the existential threat of US adversaries’ nuclear advancements, surmising that the Biden administration is afraid to reveal that they aren’t properly addressing the risk.

“The administration, I believe, is reticent to have the discussion because they don’t want to admit that they’re not doing anything, and we are sleepwalking into what it will be an irreversible ‘Day Zero’ effect,” Turner said.

He also said false narratives downplaying the significance of the anti-satellite weapon’s development must be countered .

Russia's President Vladimir Putin

“The aspect of this being in space is not just, ‘Well, it’s there in space. It’s not destructive unless they use it,'” he said. “No, It’s disruptive on day one … because suddenly we will not be able to count on any of these systems that are there.”

The White House should address the realities of the situation and speak openly about it, the Ohioan said, because “Vladimir Putin thrives in secrecy.”

“You do not hear the administration saying, ‘This is such a red line, this is such a change and catastrophic dynamic that places at risk all of the accomplishments that we have in integrating space in the economy, our international defense and communications,'” he said.

In addition to public warnings, Turner said the White House must pursue key non-military deterrents to prevent Moscow from launching such a weapon, including tighter sanctions.

Sputnik 2

“That ‘red line’ is so great that we [need] to implement an additional regime of financial restrictions, of sanctions, and even look to what are we going to do with our allies and NATO to make such a strong statement (for) Russia to understand that this is not something that is going to be accepted,” he added.

Modernization

He also suggested the US should invest more in modernizing its nuclear stockpile, bringing advancements to weapons that, in some cases, have been in storage for decades.

“The Biden administration is incredibly reluctant to take any action that would appear to be escalatory. However, Russia is the escalatory aggressor. Escalation has already occurred,” he said. “Now, the United States must stand with our allies to stop ‘Day Zero’ and preserve space.”

For its part, the Biden administration has encouraged the improvement of its nuclear stockpile , with Defense Secretary Lloyd Austin repeatedly calling for new investment.

Russian ships docked in Cuba's Havana bay last week.

The Pentagon, in its 2022 Nuclear Posture Review, called on the US to update the aging supply as the nation prepares to contend with two major nuclear-armed adversaries – Russia and China –for the first time ever.

The 2022 report said that while Moscow and Beijing have been improving and expanding their nuclear and ballistic missile capabilities , the US has focused on repairing its existing stockpile rather than developing new weapons to keep pace.

“At a time of rising nuclear risks, a partial refurbishment strategy no longer serves our interests,” the document said. “ We must develop and field a balanced, flexible stockpile capable of [keeping up with] pacing threats , responding to uncertainty, and maintaining effectiveness.”

Russia already has a slightly higher number of nuclear warheads than the US — with an estimated 5,889 in its stockpile compared to the US’ estimated 5,244, according to the Washington-based Arms Control Association.

Meanwhile, China had roughly 500 nukes as of 2023 – and Pentagon experts have predicted  that number will surpass 1,000 by 2030 .

Russian President Vladimir Putin and North Korea's leader Kim Jong Un

Lacking leadership

There are, in theory, diplomatic measures that could be taken, Turner said Thursday, “but such treaties are negotiated through strength – something the Biden administration seems incapable of showing in order to avoid Day Zero.”

The Republican closed by arguing that “Day Zero can be avoided.”

“Imagine how different the world would have been if President Kennedy had allowed Khrushchev to place nuclear weapons in Cuba [in October 1962],” Turner said. “ Europe would not be free . The United States would have been too fearful to challenge Russia in Europe with nuclear weapons just off the coast of Florida.”

President John F. Kennedy

“Just as Khrushchev could have held the United States hostage with nuclear threats from Cuba, Vladimir Putin will hold the world’s space assets hostage to counter attempts to stop him from reassembling the Soviet Union,” Turner warned.

“The outcome was different in the Cuban Missile Crisis (because) we had President Kennedy,” he said. “We need leadership by the administration – and we certainly need a dialogue worldwide to understand and call out really what are the Russians doing and what should the response be.”

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US House Intelligence Chairman Rep. Mike Turner (R-Ohio)

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