La poste maritime a pour objectif le transport de courrier à l’aide de navires de commerce : paquebots, cargos, ferries, navires scientifiques (Antarctique, …), ...
 

letter with mark PAQUEBOT and postmark from Belize (Central America)

letter with the label of the liner Jean Mermoz and postal meter impression from Marseille

letter posted on board of the liner MARION-DUFRESNE and postmark Marseille paquebot

letter with labels PAQUEBOT and M/S KINGSTOWN and postmark from CURAÇAO (West Indies)

letter with the label «Posted at sea» on the liner France and postage meter impression from Le Havre