text: Mărăști had a cracked shaft and could not exceed the speed of 24 knots. As a result, Mărăști never ventured far from the coast. Delfinul, the only Axis submarine present in the Black Sea in 1941, was obsolete and mechanically unreliable. By comparison, the Soviet Black Sea Fleet had a battleship, three medium cruisers, three light cruisers, three flotilla leaders, eight modern destroyers, five old destroyers, two large torpedo boats, 47 submarines and many other auxiliary and small vessels. The overwhelming superiority of the Soviet Navy forced the Royal Romanian Navy to conduct mainly defensive operations throughout the entire war and its warships rarely hazarded further east than Cape Sarych.
  The two Regele Ferdinand-class destroyers were the most powerful surface units available to the Axis powers during the naval war in the Black Sea but were mostly used for convoy escort. The Romanian-built minelayer/destroyer escort Amiral Murgescu and the three auxiliary minelayers of the Romanian Navy played an important role in the defence of Constanța in 1941 and later in securing the merchant convoy routes to the Bosphorus and the supply routes to Odessa and Sevastopol. Mines were the main cause of Soviet submarine losses in the Black Sea naval war. Wartime additions to the fleet included 3 KFK naval trawlers and 3 landing craft of the MFP type.