There's also "embarcation", "barque", and old types of boats like "caravelle", "carafe", "flute", "trirème", all feminine.

Not all boat names in french are masculine. Some famous ones that are feminine: https://fr.wikipedia.org/wiki/La_Dauphine_(vaisseau) https://fr.wikipedia.org/wiki/Grande_Hermine_(Nef) https://fr.wikipedia.org/wiki/La_Cordeli%C3%A8re