of the Notitia Dignitatum, the Classis Germanica has ceased to exist (it is last mentioned under Julian in 359), most probably due to the collapse of the Rhine frontier after the Crossing of the Rhine by the barbarians in winter 405–406, and the Mauretanian and African fleets had been disbanded or taken over by the Vandals. Fleets in the Eastern Mediterranean As far as the East is concerned, we know from legal sources that the Classis Alexandrina and the Classis Seleucena continued to operate, and that in ca. 400 a Classis Carpathia was detached from the Syrian fleet and based at the Aegean island of Karpathos. A fleet is known to have been stationed at Constantinople itself, but no further details are known about it. Ports Major Roman ports were: Portus Julius, located at Misenum Classis, near Ravenna Alexandria Leptis Magna Ostia Portus Port of Mainz (Mogontiacum, river navy on the Rhine) Tactics Naval tactics were undeveloped during the early history of naval warfare. Battles mostly consisted of using your ship's sailors to board the enemy's ship followed by a melee. The invention of the battering ram lead to new strategies being developed. Ships would deploy with space between them to allow for freedom of movement. This was because this position ensured that the ram was presented towards the enemy, and they could maneuver around the enemy. During a battle sailors would try to disable the enemy ship by sweeping close to the other ship, breaking off its oars. Following this the sailors on both ships would fire arrows at each other. There were two naval strategies. Periplous and Dikeplous. Periplous consisted of forming a line of ships while using reserves to attack the flanks of the enemy. Dikeplous consisted of forcing a gap in the enemy line, while attacking any remaining enemy ships. If these strategies did not work as planned, it would lead to a melee. Larger ships replaced triremes during the 5th century BCE. These larger ships were used to attack enemy ships. Which would be boarding using the Corvus. There were 40 marines and a 100 legionaries on Roman ships. These soldiers, called classiarii, used overwhelming force to win battles. Many ships would be painted blue for camouflage reasons.Blits, Jan H. (2013-12-05). The Heart of Rome: Ancient Rome's Political Culture. Lexington Books. .Pitassi, Michael (2012-05-11). The Roman Navy: Ships, Men and Warfare 350 BC–AD 475. Pen