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Old 03-21-2023, 04:53 PM   #1
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Line cutter question

Getting ready to be hauled out and intend to put a line cutter on the shaft,which type you guys have on your boats,which type is recommended
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Old 03-21-2023, 05:10 PM   #2
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This may be one of those "which religion is best" kind of questions. If you search for this, I think you'll find votes for several different types of cutters.

I have Spurs and have had zero problems with them. Some different cutters can be installed by a diver, but since you're hauling, that's not a problem. Spurs have a piece that needs to be secured to your prop shaft strut, but out of the water I found it to be a pretty simple DIY install.

Good luck with whatever you choose.
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Old 03-21-2023, 05:37 PM   #3
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This may be one of those "which religion is best" kind of questions. If you search for this, I think you'll find votes for several different types of cutters.



I have Spurs and have had zero problems with them. Some different cutters can be installed by a diver, but since you're hauling, that's not a problem. Spurs have a piece that needs to be secured to your prop shaft strut, but out of the water I found it to be a pretty simple DIY install.



Good luck with whatever you choose.
I have both, a disc cutter on one shaft, a Spurs on the other. Long story, but I don't believe one is demonstrably better than the other.
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Old 03-21-2023, 06:30 PM   #4
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Spurs here, they work as evidenced by the bits of line that are found when I haul.

One time I did manage to snag a commercial crab pot line and I managed to put it in neutral just as it started to wrap around the shaft.
That pot acted like an anchor in about 3 knots of current, so no movement of the boat for a bit as we sorted out the strategy to disengage.

As is was, I was able to unwrap it by slowly bumping into reverse.

At the next haulout, the Spurs actually was broken - still on the shaft, but loosely spinning, so the cutting ability was gone.

I have an extra, so easy to replace.

moral: line cutters good
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Old 03-21-2023, 06:39 PM   #5
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I've always been curious how well they work, don't have them so can't really comment from personal experience, but the recent thread about the VivieRae (Nordhavn 96) said they had line cutters and were rendered dead in the water by their tender tow line on one shaft and a fishing net on the other. Line cutters were not effective in either case? Engines were rendered inoperable and because of sea conditions they were unable to dive.

James
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Old 03-21-2023, 06:52 PM   #6
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I had Spurs for years and had to replace them a couple times due to bearing wear and corrosion. Worst part is that you don't know they've failed. I recently went with shaft shark disk line cutter. No moving parts and tests show its equal to scissor action.

https://www.yachtingmonthly.com/gear...ter-test-30012

Peter
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Old 03-21-2023, 07:29 PM   #7
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I've had Spurs and presently have Sharks. Are either of them effective? I honestly don't know since I don't know what may have been cut without me being aware of it. It's a little like chicken soup with these cutters.....they may not help but won't hurt. If they get you out of a bad situation even once they are worth it.
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Old 03-21-2023, 07:34 PM   #8
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Spurs. Ran over 3/4" dock line on 2 occasions. Spurs cut through, sort of, but wrapped shredded line around shaft both times. Reverse freed me once, diver second time. Probably would work better on 1/2" pot warp but I don't plan any experiments.

Agree that diving on prop offshore is very dangerous. Ran over pot years ago in rough water. Line was like iron. Finally managed to hook it with spare anchor and winched it up with main winch. Then dove to cut line. Not something I would or could do now.
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Old 03-21-2023, 07:34 PM   #9
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I had Spurs for years on all my boats unfortunately it seems that I am using them more often than I like down here in NC. I always check my gear at the beach whenever I suspect a hit and OfCourse everything is always hanky dory.
I guess my spur is doing its job well for me.
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Old 03-21-2023, 09:03 PM   #10
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I might just warn you guys if you cruise Downeast Maine with cutters you could feel the wrath of loberstermen. They donít like cutters chopping their gear and more than once a boat owner has found some unfortunate consequences. Parts of Nova Scotia Iím told are even more hostile.

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Old 03-21-2023, 09:49 PM   #11
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That’s funny because I was told exactly the opposite. I was told that the lobstermen prefer their line to be cut than to have a boat drag their gear. If the up line is cut, they can still retrieve their gear either from the buoy at the other end or using a grapple since they record the gps location of their traps. If the gear is dragged they will never see it again. I can say for sure that well over 50% of boats in my marina have some sort of line cutters installed.

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Old 03-22-2023, 06:53 AM   #12
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I might just warn you guys if you cruise Downeast Maine with cutters you could feel the wrath of loberstermen. They donít like cutters chopping their gear and more than once a boat owner has found some unfortunate consequences. Parts of Nova Scotia Iím told are even more hostile.

Rick

They'd much prefer you just don't run their gear over in the first place. Moved gear or damaged gear are both ways to make them pretty unhappy and no matter what you've got (or not) on the shafts, one of those is likely to happen if you snag their lines.
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Old 03-22-2023, 07:00 AM   #13
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I had spurs on my old Mainship. They were easy to install, and they worked great. In 13 seasons I only had to change the plastic bearing once. I changed the zinc annually.

I know of 3 lines I cut; all were submerged (by the current) lobster trap lines. Just a loud "thunk" and I could turn around and see the buoy floating.

I had a plain disk on the Albin, but I don't think it ever cut anything, and I never wrapped a line.
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Old 03-22-2023, 07:12 AM   #14
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I might just warn you guys if you cruise Downeast Maine with cutters you could feel the wrath of loberstermen. They donít like cutters chopping their gear and more than once a boat owner has found some unfortunate consequences. Parts of Nova Scotia Iím told are even more hostile.



Rick
And how would any lobsterman know if any boat is equipped with line cutters?
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Old 03-22-2023, 10:33 AM   #15
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I might just warn you guys if you cruise Downeast Maine with cutters you could feel the wrath of loberstermen. They donít like cutters chopping their gear and more than once a boat owner has found some unfortunate consequences. Parts of Nova Scotia Iím told are even more hostile.

Rick
I'll take a pi$$ed off lobsterman to a disabled boat in a cold rip current any day.
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Old 03-22-2023, 01:26 PM   #16
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I might just warn you guys if you cruise Downeast Maine with cutters you could feel the wrath of loberstermen. They donít like cutters chopping their gear and more than once a boat owner has found some unfortunate consequences. Rick
Thanks for the warning. I will keep my eyes open for any lobstermen swimming around my stern trying to see if I have cutters mounted or not.
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Old 03-22-2023, 04:10 PM   #17
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I have a full keel - I had a line cutter. I took it off about 6 months ago when I bent a blade in FL - they needed to remove it to get the prop off. I have not missed the line cutter yet. I will be bringing the boat up to NJ in the next few weeks. But I don't expect to replace it. I am a diver and I have spare masks and fins if needed - but so far so good...
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Old 03-22-2023, 04:19 PM   #18
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I installed a Shaft Shark last season as cheap insurance. Easy to install in minutes. Not sure it will ever get used, but it can't hurt being there. I've come close to some lobster pot bouys. In rougher weather, especially if they don't have multiple bouys, they can get dragged beneath the surface and invisible till you just about hit it.
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Old 03-22-2023, 07:41 PM   #19
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Disk here and on my former trawler. I KNOW they worked a few times.
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Old 03-23-2023, 05:47 AM   #20
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I'm a fan of the KISS principle. 2 piece scissors cutters like Spurs, or 1 piece disc cutter ?

This line cutter test was done by a magazine 14 years ago. Best I can tell it's pretty much a draw between the 2 types



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