Prop line cutter

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Nov 6, 2009
353
Hunter 37 FL
Well, finally found one thing I don't like about our boat, which we have had for little over 1 year now. We are cruising the Keys and crab traps are all over the place. Our previous cruising boats had a full keel with the prop in an aperature, so we never had a problem with crab traps. We've caught 4 in last 2 weeks in spite of being extra careful. When we get home, we are having a prop line cutter installed. So, the question is...do you have one and do you like it.
 

Alan

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Jun 2, 2004
4,174
Hunter 35.5 LI, NY
It sounds like you do most of your cruising with the engine instead of sail power. I carry a sharp knife at the helm for just such occurrences. I have been caught twice in my sailing career. Once with the motor running and once under sail. The knife was required to clear rats nest of line that the rotating prop created but the sailing catch simply required the line be cleared from between the prop strut and rudder and we on our way again. Of course we did have to drop sails to take the load off but that was easily handled. In general I like to steer just down current of the floats to be sure to avoid these traps.
 
Oct 2, 2008
3,811
Pearson/ 530 Strafford, NH
Well, finally found one thing I don't like about our boat, which we have had for little over 1 year now. We are cruising the Keys and crab traps are all over the place. Our previous cruising boats had a full keel with the prop in an aperature, so we never had a problem with crab traps. We've caught 4 in last 2 weeks in spite of being extra careful. When we get home, we are having a prop line cutter installed. So, the question is...do you have one and do you like it.
Hi Maryd,
Roger Long has a method for dealing with them, search his post. Worked for me.
All U Get
 
Aug 26, 2007
272
Hunter 41DS Ventura, California
I have had a Shaft Shark on my last two boats- saved me twice. I wouldn't own a boat without one.
 

Ed A

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Sep 27, 2008
333
Hunter 37c Tampa
spurs work great but you need room between the strut and the prop. I had too little clearance so i put in a shaft saver at the coupling which pushed the shaft back enough to get the spurs in. they are great. I could see how a guy could make a game of how many you cut off. but then again those guys are making a living whith the traps. sooo. i guess il be good.
 
Feb 6, 1998
11,711
Canadian Sailcraft 36T Casco Bay, ME
Having owned both Spurs and the Shaft Shark serrated cutter I can say I am not a fan of either. While the Spurs did work better they DO NOT always cut the line, especially floating clumps of line or netting.

When, not if, you need to dive on your prop you might as well stick your hand into a bucket of razor blades. I cut my wrist very badly with the Shaft Shark after it failed to cut a line. A few more mm's and it would have been the suicide vein. The water was cold so I never felt it. If it was a few more mm away I could have easily passed out in the water due to blood loss. Water was too murky and current to strong to even see the blood..

While they do work most of the time they become VERY dangerous for the few times they fail to work and you need to dive to solve the issue. I no longer use one. The Hook Knife from Sailors Solutions is the next best thing to sliced bread for pot buoys..
 
Nov 9, 2008
1,338
Pearson-O'Day 290 Portland Maine
I really struggle with this. When we (I'll throw my self in with the rest) get our toy caught in somebody's livelihood, is just cutting his gear loose and leaving really the right thing to do? I sail the same home waters a MaineSail, Tim R and Roger Long. The bays are littered with lobster pots. To date, I have not been caught knock on wood. But is just cutting the buoy loose the only way? Not casting stones, just thinking out loud.
 
Feb 6, 1998
11,711
Canadian Sailcraft 36T Casco Bay, ME
I really struggle with this. When we (I'll throw my self in with the rest) get our toy caught in somebody's livelihood, is just cutting his gear loose and leaving really the right thing to do? I sail the same home waters a MaineSail, Tim R and Roger Long. The bays are littered with lobster pots. To date, I have not been caught knock on wood. But is just cutting the buoy loose the only way? Not casting stones, just thinking out loud.
In one word YES.

Here's why..

As an ex-commercial lobsterman I can say with 100% certainty that I would MUCH rather have you cut one of my pots then to drag it across six other strings causing a massive tangle that myself and six other guys will now need to spend a few hours untangling and fixing and then buying hundreds of feet of new warp that we had to cut out of the tangle. Been there done that, not fun.

Sailors & power boaters who think they are doing you a favor by trying to untangle a pot rather than cutting it actually cause MORE HARM than good.

When strings of traps are laid out by lobsterman they are always all laid in one direction depending upon the local area/bay you are in. In one bay it could be North to South and in another East to West etc. etc..

We do this so we never lay across another string of traps. For every two pot buoys you see there are six to ten + traps connected to it on the bottom. If all the strings were not laid in the SAME direction no work could ever get done.

When sailboats snag a pot on a prop or rudder, and think they are doing you a favor by trying to get it off without cutting it, they almost always usually not helping.

The newer wire traps are LIGHT WEIGHT and dragging ten of them is no problem for a boat with sails up or one in wind and current. Often times what happens is the boat drifts, and drags the the string across a few others while the owner is trying to figure out how to get untangled. This makes a HUGE, HUGE, HUGE mess of strings on the bottom of the sea bed!

I used to run pot buoys on both ends of my strings, as most all fisherman do. Not once did I ever loose both ends at the same time. Could it happen? Sure, anything is possible but very, very unlikely. Replacing a pot buoy is FAR cheaper than loosing 300 feet of warp to a tangle and the time in man hours involved in re-rigging and re-stringing them. Pot buoy's cost about $3.00-$6.00 and when we paint them up we always paint plenty of extras.

Like anything I am sure you'll find a few guys who may not feel this way, or tell you publicly that they do, but that is my take as someone who used to fish commercially. Cutting a pot buoy QUICKLY is almost ALWAYS the best thing you can do for the fisherman.

Every time I was in a tangle I was wishing my buoy or another guys was just cut rather than dragged. I still used to get about 60% of my pot buoys back after they washed up. If in good condition I would re-use them.

All that being said I still actually detest line cutters because they can be so dangerous to you the owner when they fail to work.. Trust me they DO NOT always cut floating line, which we have lots of up here in Maine.

In my experience the serrated type of cutter is fairly useless and the pizza wheel/non-serrated even more useless. They do not always cut the line, been there done that and have the scars from the stitches to show for it.

Sorry to be so blunt but those things just do not work well enough to keep you from diving 100% of the time. They most often do work, which is great, but when they don't and your diving on the prop you run a huge risk of being sliced & diced and the risk of potential serious injury especially if it happens in lumpy seas.

I no longer use shaft cutters but do have a hook knife on a pole, a wet suit, dive knife with lanyard and a thick dive hood to prevent head bangs in lumpy seas. I've also split me head open when the hull came down on me. This was diving on a tangle when I had Spurs on our power boat

Just my .02...... :)
 
Jun 4, 2004
844
Hunter 28.5 Tolchester, MD
We've sailed on the northern Chesapeake for over 30 years and have hooked up crab pots only twice in the early years with our shoal draft H25; both in the slot between the rudder and hull while sailing across a current. Both were easily pulled free by going head to wind and using a boat hook. With our H28.5 we've never hooked up, as we have a deep keel and a folding prop; but we do keep a sharp lookout, particularly when sailing across current in light air and the pots may not be as visible in strong current. Pots in the bay are single crab traps while pots in the rivers generally float both ends of a string of baited line; not quite the same issue as lobster pots in Maine. I'd rather not mess with someone elses livelihood, and spurs or line cutters may not cut the line before a mess of line is yanking on your prop, shaft and strut, causing significant damage. Motoring at night is a different thing altogether, and we keep a light handy if were outside a channel in an area with crab pots.
 
Feb 2, 2010
373
Island Packet 37 Hull #2 Harpswell Me
With a fin keel my Pearson could be prone to Lobster pot warp. I did fit the serrated cutter last year but a keen lookout is my primary defence. I do carry a shorty wet suit, mask and a knife but having Mainesails comment, will get myself a hood for the coming season.
Do you connect yourself to the boat with a line when you go over the side?
 
Dec 25, 2008
1,580
catalina 310 Elk River
What would happen if the line becomes tangled and you get caught under the boat. No way!
 
Sep 29, 2008
1,944
Catalina 310 #185 Quantico
My $0.02

I have the slide on Prop Protector and I like it. On the Potomac the crabbers are not so considerate and sometimes the pots are so close together you could almost walk across the river on them. A year ago they had a moratorium on crab fishing for a while and it was pretty nice, but normally we are continually dodging pots. My Prop Protector cuts the lines about 95% of the time and occasionally I have to dive on the prop. I have seen line wrapped around the shaft before the strut and after the strut. I can live with 95% of the as diving under the boat just isn't my idea of fun.
 
Jun 2, 2004
5,802
Hunter 37-cutter, '79 41 23' 30"N 82 33' 20"W--------Huron, OH
Ed A(above) neglected to tell you that Ed S had to dive on a boat we were delivering. And no, neither he nor I were driving. Point is that the boat had a line cutter. So why was there ten or fifteen feet of line around the shaft, the prop, and the rudder? It took me multiple dives, I think they gave me a table knife.

Not only did it wrap it also pulled the shaft out of the coupler. So I'll be from Missouri until I see one work.
 
Nov 23, 2004
281
Columbia 8.7 Super wide body Deltaville(Richmond)VA
Crabbers in the Chesapeake are beginning to use steel wire instead of warp...be warned.
 
Dec 2, 2003
1,637
Hunter 376 Warsash, England --
Several magazines have reviewed these. They fall into two categories, rotating scissors or rotating knives.
About ten years ago I bought the 'Stripper' from Ambassador Marine in UK. It is a scissors type and first time out in fog and in the shipping lanes (200 ships a day) we ran over a big lump of floating netting and, though the prop was still foul, the Stripper cut it up and we were free and able to make 4 knots under engine (no wind).
Then when in a lock last year I cut my own warp! We just motored away with both ends of the warp still on deck.
Both times no real problems to hazard our safety.

Another time we ran over a floating fisherman's landing net. It had an aluminium frame and a 1" diameter 5' long alloy pole handle. Though I stopped the boat we could not get it out from under the hull. So I just put the engine into gear and drove forwards. Loud knocking noises from underneath as it went round a few times whilst it was chopped up then all okay - just a bit of antifouling scraped off the hull near to the prop. I don't think the Stripper designer ever thought his gear would be used for mincing aluminium.

I guess I am the sort of guy these things were designed for!

BTW The rotating knives do not do as good a job as the rotating scissors, particularly on netting and the like and they make hard work of wires.

To fit a scissors rope cutter (Stripper, Spurs or Gator) you need about 1¼" gap between prop and strut to fit one and this is a good opportunity to fit a flexible anti-vibration coupling which spaces the prop back the same distance whilst quietening down the transmission and making the need for precise engine alignment not so important.

See the UTube link below. Yachting Monthly magazine did the test. Its a bit jumpy but play it through a couple of times and listen to the electric motor slow down and stop when the tangle gets too big. However, going into reverse seems to clear things.

Link for UTube prop cutters:-
http://www.youtube.com/watch?v=nPP3Kj6Zhc8&feature=channel

Link for flexible shaft couplings:-
http://www.randdmarine.com/downloads/RandD_Shaft.pdf

The above are the trade names in use in the UK but equivalent products will be available on your side of the long pond.

BTW the rotating knives are lethal to anyone trying to clean a hull when diving but the scissors types do not have outward facing razor sharp blades.
 
Oct 2, 2008
3,811
Pearson/ 530 Strafford, NH
Maryd,
After reading Roger's thread, here's what I did in light wind and current.
http://forums.catalina.sailboatowners.com/showthread.php?t=112951
That was the third time caught on a bouy, but we've had more seaweed wrapped around the prop than I can count. Going into reverse clears most of it. I still would get in the dingy and use the boat hook to loosen the rest. I only dove under twice. Even with hot water poured down my wetsuit first, it still gets cold in Maine waters. Good luck with your search.
All U Get
 
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