Prop Shaft Line Cutter

[karista]

I am thinking of installing a Shaft Line Cutter, I had to be towed in from 15 miles out (No Wind), due to a Crabpot Line stalling out the engine (Wrapped around the Propeller).
Has anyone installed one of those cutters? If so, do they work and what brand is recommended?

[Ken Juul]

I've thought about it, but not sure how effective the cutter will be after a few months of marine growth.  The cutters are sharp, not sure I would want to try cleaning one in the water.

[Analgesic]

My boat came with a Spurs line cutter.  I know it works-I have felt it cut lobster pot lines several times.  Once in Maine while sailing I saw my speed drop to about 3 knots in high wind and saw a line trailing behind the boat, clearly dragging a pot.  I nervously started the engine and threw it into gear immediately freeing me up and off we sailed.  With hindsight I don't think I would have done it again and now travel with a wet suit, mask and cheap knife.  My conscience bothers me as I cost the lobsterman big bucks for steering poorly.  Of note, the fixed portion that attaches to the shaft strut I believe has screws designed to sheer off as a defense against shaft/engine damage if the line or other object cant be cut.  I lost this part and had to replace it after every season.  The last 2 years not travelling to Maine I haven't bothered reinstalling it.  Marine growth never seemed to be a problem-very hard steel in constant motion. 

[Jeff_McKinney]

While chopping the lines and hurting the watermen's income is not good, having your prop fouled and your crew & boat put at risk makes the choice a no-brainer for me.

I've got a "Shaft Shark". It is a 2 piece stainless circular blade that clamps onto the shaft behind the cutlass bearing and just before the prop hub. Imagine a serrated bread knife bent into a circle with the cutting edge facing out. No moving parts, and minimal drag. 

It can be professionally resharpened, although I've had mine for 4 years in the Chesapeake Bay and it's still really sharp. Crab pot lines don't stay on long if the shaft is spinning. The occasional barnacle is easily knocked off. A diver can install it in the water, although I put mine on during a routine haul-out. 2 allen bolts, some loctite (included) and 10 minutes is all you need, but wear heavy work gloves to protect your hands.

I agree with Analgesic: It is prudent to keep a mask, snorkel, and fins on board. Get a set of those "medic shears" with the plastic handles. If you do need to go under, tie the shears to a light line and then to your wrist. Easier to operate than a knife, and they cut through nearly everything.

Fair Winds,