The Trireme is a mediterranean rowing warship, similar to the Greek Triera. Its main weapon was a ram. The ship had a boarding bridge  called a 'Raven' which Roman legionaries used to get on an enemy vessel. Tha maximum speed on oars was up to 6 knots (11km/h). Two straight sails served as an auxiliary power source. The crew consisted of approximately 350 people, including rowers.