Can we draw the following hypothesis from the context?

Context:

Convoy PQ-4 was the fifth of the Arctic Convoys of World War II by which the Western Allies supplied material aid to the Soviet Union in its fight with Nazi Germany. The Convoy sailed from Hvalfjord, Iceland on 17 November 1941 and arrived at Archangelsk on 28 November 1941.

Hypothesis: Convoy PQ-4 used ships to transport supplies.
Yes