We don't have synonyms for sea card yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are seaward, seaboard and sea hare.
(n) :
An ID card that identifies someone as eligible to work as crew aboard ship.
(n) :
An ID card issued by a cruise ship line to passengers, often tied to a credit card, which passengers use to board the ship after excursions, to enter their rooms, and usually to pay for items while on the ship.
(n) :
An ID card that identifies someone as eligible to work as crew aboard ship.
(n) :
An ID card issued by a cruise ship line to passengers, often tied to a credit card, which passengers use to board the ship after excursions, to enter their rooms, and usually to pay for items while on the ship.