Kalran: Tales of the four nations/Dry Docks

To both showcase their industrial and military might. All of Ouroboros ships are large capital class ships, which is not only armed with a large number of armaments.

ANd to compensate for their lack of smaller class ships their capital ships both carry and create an escort of remote-controlled patrol boat drones "piloted" by the brains of penitent criminals inside their capital ship's hull. And, with exception of one prototype that was stolen by the Tenko, have completely shunned the use of submarines, since they want a weapon of terror/intimidation, again relegating submarines to drones being piloted by criminal brains inside the ships.

Some of them even carry bunkers for their volunteers to fight even at sea, and launches said volunteers via armored artillery pods.

Trivia

 * All of Ouroboros naval vessels are based on the empire starship from star wars, and plays similiarly to them in empire at war.