1) Accra or Lagos 2) Algeciras 3) Amsterdam or algiers 4) Baltimore is one 5) Baltimore or New Orleans 6) Bangor or tacoma 7) Boston or Philadelphia 8) Calais or Dover 9) City on the ocean 10) City on the water 11) City or a sort 12) City with ships at docks 13) Coastal city 14) Coastal city, often 1) Caesarea 2) Harbor 3) Harbour 
• (n.) A port on the seashore, or one accessible for seagoing vessels. Also used adjectively; as, a seaport town.
[n] - a place where ships can take on or discharge cargo
haven noun a sheltered port where ships can take on or discharge cargo