Here's what Vince said.
- Naval battles will probably not be included, due to the size of the product and the engine dificulties. However if the product gets a lot of attention and sales, nothing is impossible.
I think it's definitely possible, some of the most fun I've had was with the ships in PWmod, their controls were the same as the small boats in NW and the biggest boat was maybe half the size of a ship of the line, put some cannons on that and it'd be awesome.
Imagine 30+ people working together to operate a ship and communicating on TS...one man steering, and maybe you would have some crew-members go about on the mast and stuff where they'd need to interact with the sail at several points to unfurl it in order to make the ship speed up and down, lots of cannon crew, a look-out, maybe soldier marines and repairmen...
My mouth's watering just thinking about it, wouldn't even mind if they made it into a new separate DLC, would still have to be during the napoleonic wars ofc, no pirate shit! :P