The term 'CAPTAIN's Command' refers to the orders given by a CAPTAIN of a ship. The crossword solutions for this term are FIRE (4 letters), CREW (4 letters), AVAST (5 letters), TOSEA (5 letters), ATEASE (6 letters), ASYOUWERE (9 letters), and FULLSPEEDAHEAD (14 letters). FIRE is an order to FIRE weapons, CREW is an order to the CREW to perform a task, AVAST is an order to stop, tosea is an order to set sail, atease is an order to ease the sails, asyouwere is an order to return to the previous task, and fullspeedahead is an order to go full speed ahead.