So: what modifications have you made to your boat to increase its seaworthiness? - SailNet Community
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post #1 of 4 Old 07-24-2012 Thread Starter
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So: what modifications have you made to your boat to increase its seaworthiness?

All you have to do is take a look at the ISAF offshore special regulations (available here:ISAF : Official Site : Documents & Rules : Offshore Special Regs : Offshore Special Regs Index) to know that there are lots of things that can be done to your boat to make it more seaworthy. Well, if you have made any modifications to your boat to improve its seaworthiness, post here! Obviously, pictures and a brief explanation of how difficult or easy it was to do, and how expensive, are helpful. And I don't just mean modifications for crossing oceans. Any modifications you have made that you feel have improved the seaworthiness of your boat in any way, even a minor one, can help others here improve their confidence in their boat and maybe gain the confidence to go farther afield!

I'll start with one mod I did this past winter. The original plastic ports were still on my 1981 hunter 25 when I bought it. They were crazed and cracked, leaked about two gallons of water onto the boat in every rain storm, and the wet core around them was rotted. I didn't have the money for new ones, so I decided to replace them with smoked acrylic, screwed onto the outside.

By following the instructions in "this old boat", it was not difficult to make the new ports. Cutting and drilling the new ones took a weekend, and it took a morning to take out the old ones and cut square openings where the old oval ports were. Then I taped and spray painted the inside part of the acrylic that would not be over an actual opening, so you can't see the white deck underneath it. Finally I screwed it in with ss #10 screws, and #10 through bolts every three holes.



No more leaks, no more rotting core, no more worrying about old uv damaged plastic being the only thing keeping green water out of the cabin.

Post yours!
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post #2 of 4 Old 07-25-2012
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Re: So: what modifications have you made to your boat to increase its seaworthiness?

I increased my cockpit drains in size from 1" to 2" and added a thru hull so I have 2 on the stearn. It' drains very fast now on either tack. I got rid of all thru hulls below the water line, ( No Inboard other wise I would have one for the intake) I increased the thickness of my lexan window's and have plywood strom boards that slide into postion on the outside. Added a mast head running light for better viz. ( I spend enough time in a commercial wheel house to know it's appreciated) That's just a few of the thing's I've done recently

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post #3 of 4 Old 07-25-2012
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Re: So: what modifications have you made to your boat to increase its seaworthiness?

Starting with a boat designed for off-shore use is a good start as many things are already done.

Most of what I have done on my boat is about redundancy. Engine spares, instruments, etc.

The other key factor is knowing your boat and it's systems. Being able to fix something on the fly.

Tim R.
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1997 Caliber 40LRC

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post #4 of 4 Old 07-25-2012
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Re: So: what modifications have you made to your boat to increase its seaworthiness?

What ISAF level are you shooting for? Fortunately for me, my boat met a lot of the requirements straight from the builder. Here are some real basic compliance things that I did in addition (list might not be complete as I’m working from memory and I’ll not mention things that might not be appropriate for your boat.) 1) Making sure everything is dogged down in the cabin including; battery straps, straps on all heavy equipment, dogs on boards covering interior storage compartments, cabin sole boards, engine compartment doors, companionway steps, etc. Secondary (i.e. “baby) latches on interior cabinet doors. Stove locked and with propane shut-off valve. Not expressly covered but good to have is extra Velcro holding down cabin cushions and something to hold exposed items in place. ISAF does this incase of turtle’ng, but your cabin will get tossed in any serious knock-down. 2) Two manual bilge pumps – one in the cabin, the other in the cockpit. 3) Masthead tricolor and VHF antenna then a secondary antenna in case of a dismasting. 4) Waterproofing and locking all exterior hatches. 5) A method of locking in all companionway hatch boards (at least to the shear line.) 6) A method of locking the companionway slider which can be opened from either side. 7) Damage control tools for things like stopping leaks, cutting away the rig etc. 8) Man overboard equipment (I use a MOMS 8).
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