16Ft aluminum v-hull build

I have a question I am in the middle of creating plans for the flooring and sub flooring in my 16ft aluminum v-hull. Now my question being with the ribs on the bottom of the boat if I fill my subfloor with poor foam how do I make a drainage system without compromising the ribs? I have a bilge pump in the back that I am installing but I want to get the water to the back what is the best way to do this?

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There should be drain channels in center of rib/stringer,just make sure everything is fully clean before installing floor.

I would check out Tiny Boat Nation on YouTube. I’m sure he has your answer. I got started watching a video of his, next thing you know hours went by.

I might try my hand at doing that someday. He does some really cool things to those little tin boats

Or the tinboats.net forums. Tons of builds and pictures on there and very helpful guys.

There aren’t drains because that boat wasn’t designed to have a floor.

I’d make a small cutout in the ribs or drill some drain holes. A small groove, like a quarter inch by an inch might work. Shouldn’t be an issue with structural integrity.

Or, fill her completely with foam and make the floor removable. I’d probably make the floor removable anyways so you can clean and dry under there.

I am planning on making the floor removable as it will be aluminum sheets. I will check out some videos any other advice would be greatly appreciated as I am a new to the boating scene.

Why aluminum and not wood? Not saying it wouldn’t work but never seen that before.

Drilling small holes will be your only option. You’ll always have some water that collects above those ribs though. The drain holes will help but they’ll get plugged up with gunk rather quickly too.
Definitely make the floor removable, that will be your best bet if getting it totally dry after using it is your objective.

Aluminum for weight reasons.

What if I line the bottom with plastic wrap, So it made the foam removable and drilled small holes in the plastic after the Foam cured, And then drilled some drain holes that way the foam is removable the floor is removable and at the end of every boating season I can remove the foam keep it dry and keep the bottom of my boat Dry…

I think that’s overkill. If you look at a small aluminum boat with a floor, the foam was just sprayed in and then a channel down the middle to drain. If you have a channel with drain holes and the floor is removable you’ll be good to go.

Make sure that aluminum floor is painted or covered with something. It’ll get hot!

Drill a small hole on each side of each rib to help with some of the drainage. You will never get all of the water completely out, best practice after fishing in heavy rain is to tilt it up and get as much out of the back as possible and just give it time to dry out.

I would highly recommend lining the space you intend to foam with plastic prior to pouring. Or use sheet foam rather than poured foam, so you can take it back out. If you ever have to remove the wet, waterlogged foam you will appreciate it.

You can check out the rebuild I did on my boat a few years ago:
1987 Alumacraft V16 DLX Rebuild
https://forum.tinboats.net/viewtopic.php?f=21&t=43184&p=435453#p435453