The term 'Merchant Ship' refers to a commercial vessel that is used for transporting goods and passengers. The two crossword solutions for this term are 'ARGOSY' (6 letters) and 'TONNAGE' (7 letters). An ARGOSY is an old-fashioned term for a large merchant ship, usually with multiple masts and sails. TONNAGE is a measure of the size or cargo capacity of a merchant ship, typically expressed in terms of volume or weight.