The Soviets can reign supreme on naval maps as long as your fleets are mixed and well protected. But using dreadnoughts alone is not a good thing. You will need a good mix of ships to protect your naval fleet. Sea scorpions provide anti-air defense against harriers, racketeers, destroyers, and aircraft carrier hornets. Also, subs can be used to down destroyers and fight dolphins. Finally, use squids to take down carriers and destroyers.