This is a pseudo-Dungeon Tile battlemap I made for my campaign on Google Wave since the Dungeon Tiles Mapper I normally use didn't have any good ship tiles. It's too big to print out at 1:1 scale, but works quite nicely for the Fighty plug-in. It should work for GameTable or MapTools, as well.
Here are the environment rules I'm subjecting my PC's to this encounter:
- The grate over the opening is difficult terrain (-1 movement per square)
- Crates, barrels and sacks provide cover to those behind them but do not block ranged attacks; they are not stable enough to stand on
- PC's and NPC's can be pushed over the side of the boat; DC 15 Acrobatics allows the PC to grab the railing before going completely over; PC grants combat advantage while in such a position
Whenever a PC moves, roll either an Acrobatics or Endurance check (DC 10) to account for the ship's movement; Success: the PC's are unaffected and can move and attack normally; Fail: PC feels queasy and/or loses his balance, moving at half speed and has a -2 penalty to hit for that turn.
If there is demand/interest, I may do more of these - though I'm not sure what sort of things people need (inns? more ships? lava-based environments?)