just spent 10 minutes having look round - easy to navigate apart from it took me a while to find the intel room - i was actually expecting the intel to be on the main deck at the end of each base, then i got carried away admiring the water
the mass of oil barrels are they placeholders? i noticed a couple of routes to the intel are blocked by them.
Major ammo pack right next to the flag - engineers wet dream, i'd suggest making him have to work a little harder if he intends to set up a sentry in the flag room.
Same with the middle the major pack might be too much, scout grabs intel picks up major pack at flag , picks up major pack in middle and then caps
the rooms with the rocket/radar- did you intend players to get inside here at all and use the small corridor because right now you cant.
The map is looking really good so far, my personal opinion though would be to try and make it more cruise ship like on the internals, i understand why you have the rocket and radar thing hidden inside the bases but atm it looked kinda wierd. certainly dont over do the wooden textures - the floors can get away with it , but i think the vertical walls should maybe just be colour themed towards red and blue.
The options for the internals of the map are almost limitless since a cruise ship has pretty much everything on board, if you could squeeze a swimming pool in there it gives you a gameplay option for extinguishing pyro flames (although there is plenty of water off the sides

), and have you had any thoughts for the middle area?
Honestly i'm mighty impressed with the brush work, its really clean and flowing now, biggest stumbling block now would be to make it look like a cruise ship with the limited textures/models at our disposal.