 Complete the following phrase:  Massively outnumbered by the Black Sea Fleet, the Romanian ships were kept behind the minefields defending Constanța for several months after the start of the war. They spent that time training for convoy escort operations. Beginning on 5 October, the Romanians began laying minefields to defend the route between the Bosphorus and Constanța; the minelayers were protected by the destroyers. After the 