liveaboard

Short definition from Wiktionary

Adjective

1. 1
   Of a boat: designed or modified to allow people to live on board.
2. 2
   Of a person: living on board a boat.

Noun

1. 1
   A person who lives on a boat.
2. 2
   A boat designed or modified to allow people to live on board, compared to similar boats which do not have this feature.