During peacetime, light surface vessels [defined as warships displacing more than 100 tons but not above 10,000 tons] of all powers may transit the straits after giving prior notice to Turkey as required by the Convention. Turkey may waive the notification requirement if the warships were transiting for the purpose of providing humanitarian assistance. The choice of "light surface vessels" as the largest warship allowed through the straits effectively kept the new German "pocket battleships" out of the Black Sea -- a primary goal of the Soviet negotiators.
Capital ships of Black Sea powers may transit the straits provided that they did so in accordance with the Convention. The Black Sea powers (the Soviet Union, Bulgaria, and Romania) had two additional options, one involving submarines and the other permitting their "capital ships" with a tonnage greater than 10,000 to transit the straits.