A: According to Stewart v. Dutra, 523 U.S. 481 (2005), a vessel is “a watercraft that is used, or capable of being used, as a means of transportation on water.”
Traditionally, the following are considered to be vessels: crew boats, supply boats, barges, drill ships, floaters, platforms, jack-up barges and work over rigs.
A floating casino that is permanently tied to the bank and never moves has been held to not be a vessel.
American courts have struggled to define what a vessel is.