A port vessel is a type of ship that is used to transport goods and passengers between ports. The term can refer to a variety of vessels, including a DECANTER (8 letters), CASK (4 letters), CARAFE (6 letters), VAT (3 letters), and TUG (3 letters). A DECANTER is a large, wide-mouthed container used for storing and serving wine or other beverages. A CASK is a large barrel-shaped container used for storing liquids such as wine, beer, or cider. A CARAFE is a glass or metal container used for serving drinks. A VAT is a large container used for storing liquids or other substances. Finally, a TUG is a small, powerful boat used for towing or pushing larger vessels.