In this part—

(1) “master” means the individual having command of a vessel.

(2) “owner” means the person to whom the vessel belongs.

(3) “seaman” means an individual (except scientific personnel, a sailing school instructor, or a sailing school student) engaged or employed in any capacity on board a vessel.

(4) “fishing vessel” includes—

(A) a fish tender vessel; or

(B) a fish processing vessel entered into service before January 1, 1988, and not more than 1,600 gross tons as measured under section 14502 of this title, or an alternate tonnage measured under section 14302 of this title as prescribed by the Secretary under section 14104 of this title or entered into service after December 31, 1987, and having not more than 16 individuals on board primarily employed in the preparation of fish or fish products.