Undersea boat

This craft is 20 feet long and 8 feet wide, with a draft of 2 feet, and is identical to a river boat (and can be used as one). As it is magical, however, its Armor'Class is 4 and has 40 Hull Points. No rowers or sailors are needed if the command words are known. The command words for the undersea boat are simple anagrams:

When underwater, the boat radiates a water breathing effect, protecting all passengers and crew as long as they touch the boat and it is fitted with grips so passengers won't drift away.