Gaining naval superiority is fairly simple. While following this strategy, an air force should also be built to assist in the attack. First, build three Naval Factories. This will give a good building capacity, and room to upgrade one at a time to T2 or T3. When the factories are completed, begin repeat-building T1 Attack Submarines and send them in small groups to choke points or patrols. This will give easy dominance over the enemy, since submarines can attack all naval units, while most of the enemy units will not be able to retaliate. Also, stationing some submarines near the shore of the enemy base will give information of amphibious and air activity, and destroy any enemy attempts at building naval factories and therefore a navy.