Entrance to the Black Sea is impossible for ships in excess of 150 000 tons deadweight because of the depth of water in the Dardanelles.
Isango ukuya kulwandle olumnyama alinakwenzeka ukuba iinqanawa ezigqithisileyo ku 150 000 eetoni obunzima bufileyo ngenxa yobunzulu bamanzi kuDardanelles.