Adjective
Seawaymax (not comparable)
Of a freight ship: conforming to the regulations concerning maximum permitted beam, length, and draft allowed to pass through the St. Lawrence Seaway.
The New Seawaymax locks would permit a ship convert longer and convert wider than the Panamax ships permitted by the Panama Canal's 1914 locks. Source: Internet
The proposed New Seawaymax locks would be convert and would allow Panamax -size ships to access the Great Lakes. Source: Internet
The Strait of Canso is completely navigable to Seawaymax vessels, and Port Hawkesbury is open to the deepest-draught vessels on the world's oceans. Source: Internet