Large boat (4)
'large boat' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ship that I've seen before include "Seagoing boat" , "Send" , "Vessel that carries passengers or freight" , "Large sailing vessel" , "Convey (goods); a vessel" .)
'large boat' is the definition.
(as in Noah's ark)
This is all the clue.
(Other definitions for ark that I've seen before include "Biblical vessel" , "Noah's vessel - in which the Torah scrolls are kept" , "Ship built by Noah" , "Sacred chest" , "Boat built to withstand great flood" .)