If you wanted to add a crew to this vessel, these 1:50 figures would probably work well;
http://shop.construction-toys.com/6-...e-figures.html
With a little bit of paint and some minor alterations, these figures could be transformed from construction workers into deckhands on a commercial ship, or revelers on pleasure vessel.
I’ve altered and transformed many figures for use on my 1:64 scale railroad and continue altering them for use on my model boats. This is definitely possible and not that difficult to do. If you need any help, I’d be glad to offer it.