The term 'PERSON ON DECK' can be solved with the crossword solution 'SAILOR', which is a 6 letter word. A SAILOR is a PERSON who works ON a ship, typically as part of the crew. They are responsible for the operation and navigation of the vessel, as well as maintenance and repairs. Sailors may also be responsible for loading and unloading cargo, and providing security ON board. The term 'PERSON ON DECK' refers to a SAILOR who is actively working ON the DECK of the ship.