Hi Paul sorry the boat will hopefully improve my building skills for a future project sorry i should of made that clear.
Back to the boat: i’ve made some mesurements The engine room has to be at least 2 inches long and 31/2 wide. the beds are 1 inch ide and 2 inches long.
The beds are bunks of 3 and there are 3 sets two next to each other and the third bunk is going across them at the front of the boat so it needs to be at least 21/2 inches wide to fit the bunks in.
and the stowage compartment can be as long as it likes as i’m not sure how big it’s going to be so it’s up to you i was thinking 13 inches as the total lengh of the boat.
Nick.