Another option is airtight compartments. I personally can't stand foam in boats so for my boat I didn't put any limber holes through the stringers. With 2 stringers in my boat that makes 3 compartments. There is a limber hole in each frame in each compartment. At the aft most frame there is a drain plug in each limber hole. You can pull the 3 drain plugs from time to time to check for water, but if you get a hole in any compartment it can only fill that not the other 2. Now this is not as safe as foam because of you hit something hard enough to breach all 3 or break the boat apart it won't float. Given my distrust of foam in boats this alternative gave me enough safety without foam.
Just another option to consider depending on your risk tolerance.
LB26
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Re: LB26
Very true, but...joe2700 wrote: ↑Wed Sep 14, 2022 9:12 pm Another option is airtight compartments. I personally can't stand foam in boats so for my boat I didn't put any limber holes through the stringers. With 2 stringers in my boat that makes 3 compartments. There is a limber hole in each frame in each compartment. At the aft most frame there is a drain plug in each limber hole. You can pull the 3 drain plugs from time to time to check for water, but if you get a hole in any compartment it can only fill that not the other 2. Now this is not as safe as foam because of you hit something hard enough to breach all 3 or break the boat apart it won't float. Given my distrust of foam in boats this alternative gave me enough safety without foam.
Just another option to consider depending on your risk tolerance.
The sole bond across all the boxes is a horribly easy one to have voids, so I would probably use a separate piece of foam and close the top with 1708 tabbing. When I put my foam sole down, I did some inspection and the bond on top of a 5/8" wide foam is not good enough to ensure no ingress.
Re: LB26
Afternoon Guys
Seems I have opened a can of worms with this one.... All useful though.
Dan I will take the sole / deck out and take a photo as soon as I can get a mate to give me a lift, would appreciate if you could send off to get advice.
Cheers
Les
Seems I have opened a can of worms with this one.... All useful though.
Dan I will take the sole / deck out and take a photo as soon as I can get a mate to give me a lift, would appreciate if you could send off to get advice.
Cheers
Les
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Re: LB26
I am with BarraMan's way of thinking. Build a solid boat, if the hull is breached the foam is a solid back up plan, if the backup plan fails or water comes in by other means, there is yet another back up plan. And that backup plan has backup plans to help support it.
For some, simply forgetting to put the drain plug in is a major event that requires ending the trip, returning to dock, scramble to get the boat on the trailer. For others it a good laugh and a reason you didn't plan for it but it's not a big deal. You planned for bigger things.
Last edited by OrangeQuest on Fri Sep 16, 2022 10:48 am, edited 1 time in total.
"that it isn't just an ordinary sort of boat. Sometimes it's a Boat, and sometimes it's more of an Accident. It all depends." "Depends on what?" "On whether I'm on the top of it or underneath it."
A. A. Milne
A. A. Milne
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Re: LB26
As soon as I get a pick, I will post on the experts forum and see if anyone comments. I am the opener of the can, but if you ever took on water; rather than wondering what will happen 8 miles offshore, better to know..
Re: LB26
For a boat this size I would section it off and have bilge pump in each section in the center of the boat. That is how my big boat(38) is, three sections, 3 bilges in the center, foam in the outside compartments with limber holes to drain into the middle of the boat. There is also I high level pipe (just higher than the water line) that if a section floods water will drain through the pipe to the rear. For a 26' I might try to section it in half.
See my LM 18 build here.
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See my LM 18 Questions here.
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viewtopic.php?t=64254
See my LM 18 Questions here.
viewtopic.php?f=2&t=64299&hilit=lm18\
Finished Boat Here
viewtopic.php?f=25&t=65173
Re: LB26
les2021 how much foam do you have forward of the pilot house, it should equal the amount aft, or you will be out of balance if something should happen. I do know most bottom foam only goes to the top of the stringers, if that helps you. Jacques usually includes a foam schedule in his smaller boats, but I don't know about his larger boats as foam is optional. Tom
Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978
Re: LB26
Evening Guys
Well it's good to be back.....
Last visitors have now gone back to the UK, grandchildren 6 + 3 boys or should I say tornadoes !!! great but so exhausting.
Just finished olive harvest, best year in a decade so the local farmers tell me, long days and back breaking.
So back in the boat shed for the first time in a month. I decided to carry the dry fit of the shaft, prop and rudder. all went well the shaft coupler lines up perfect with the engine plate. ( thank god ) So bolted the engine in place and will tackle the steering hydraulic ram tomorrow.
Still having big problems with fuel tanks. They are a fortune over here lowest quote so far 4000 euros !!!! for three purpose made tanks.
Have attached some very poor photos as usual.
Cheers
Les
Well it's good to be back.....
Last visitors have now gone back to the UK, grandchildren 6 + 3 boys or should I say tornadoes !!! great but so exhausting.
Just finished olive harvest, best year in a decade so the local farmers tell me, long days and back breaking.
So back in the boat shed for the first time in a month. I decided to carry the dry fit of the shaft, prop and rudder. all went well the shaft coupler lines up perfect with the engine plate. ( thank god ) So bolted the engine in place and will tackle the steering hydraulic ram tomorrow.
Still having big problems with fuel tanks. They are a fortune over here lowest quote so far 4000 euros !!!! for three purpose made tanks.
Have attached some very poor photos as usual.
Cheers
Les
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Re: LB26
How much fuel tank do you need? 4000E big bux. Why 3 tanks?
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