DECK MATERIAL next.
At least during prototyping, I've settled on Western Red Cedar fence slats. It's fairly light compared to other wood species, fairly moisture/rot resistant, locally and sustainably sourced, and inexpensive. It will allow easy experimentation with different deck lengths and widths, and configurations of various additions like the transom, seat, battery box, controls.
Once I settle on specific deck dimensions, I suspect there are better options from a weight/performance/durability standpoint (but probably not cost).
Another consideration is that I want the deck to be modular, to accommodate different hull configurations. I.e. a three-hull version would work for a two-person boat, and four hulls might be called for to allow more battery weight, for better range/speed. Decks might range from 3 feet wide to 6 feet wide, and I don't want to build a different deck for each width, instead using standard-width deck pieces to make up the width I'm after at the moment. That approach also helps with portability, as the deck sections can likely go in the back of the car, with only the hulls needing to be put on the roof rack. The idea is to assemble it at the launch point, no trailer needed, or even a boat ramp. This opens up access to many more launch locations than if a trailer and ramp are needed.
So far I have this as my list of decking options:
- wood / plywood
- plastic / fiberglass / composite
- aluminum plate / honeycomb
- carbon fiber
Of course that last one is likely way out of line cost-wise.
Composites look to have the most promise so far, although plain old aluminum diamond plate looks reasonable too. Recently I found some products from Coosa Composites that may work well. They're stronger and lighter than the same size plywood, and not too unreasonable cost-wise. So I may branch out in that direction once prototyping is well underway.
Would love to hear from others as to what deck material they've had experience/success with, or just feel like it's a good option for me to consider.