In Judges 5: 17, Deborah sang that Dan remained on ships. Did the Israelites have ships in the time of the judges? Is 'ships' the correct translation? Is there an explanation for this curious mention?
Dvorah is calling out all the tribes that sat on their hands and refused to fight. Each tribe sat on its hands in its characteristic way. Dan is famous for trading in ships, so they stayed by their ships. As opposed to Reuben, who more or less stayed by their sheeps.
The nautical tendencies of Dan are mentioned in the old Jewish Encyclopedia. This verse is the only reference in the Hebrew Bible to the tribe of Dan as old salts, so if you were looking for other information about that, I don't think that there is any to find.