A vessel with two tiers of oars was/is a bireme.
The basic ancient warships could be called either a monoreme, a bireme, or a trireme. This was determined by the levels of oars---maybe. The history of the ancient ships is clouded as there is very little written material about them and even less accurate depictions. Historians wrangle about whether the numerical prefex,(bi, tri,quad, quinc) refer to the levels of oars or to the number of rowers on each oar.
The trireme originated in ancient Greece around the 7th century BCE as a type of warship designed for speed and maneuverability. It featured three tiers of oars on each side, allowing for a larger crew and increased rowing power. Triremes played a crucial role in naval battles, particularly during the Persian Wars, and were instrumental in establishing Athenian naval supremacy in the Mediterranean. Their design influenced subsequent naval architecture for centuries.
Well, seeing as they were vikings, they used oars to row the boat. <><><> A But mainly by sails,
Either by a rectangular single sail, or by oars, or both.
Probably the trireme. It was a ship with three rows of oars and around 170 crew members It could reach up to 14 knots but its average speed was 8 knots. It was first seen in Cornith 700 BC.
Bireme
An ancient galley with two banks of oars is called a bireme.
slave ship
Bireme
ancient type of ship driven by oars
ancient type of ship driven by oars
An ancient vessel with two banks of oars was called a bireme.
galley
The Trireme was a warship powered by three tiers of oars with a ramming projection in the bow.
A bireme is an ancient galley with two banks of oars, one above the other.
An ancient ship with two banks of oars is called a "bireme".
A Greek word for a Galley, a vessel developed as a warship, with three rows of oars. The Latin word is Triremis, as in Tri for three, and Remus for Oars