They were not all the same length.
Theere are 132 oars on a trireme
The ancient trireme was a type of warship with three rows of oars used by the Greeks in naval battles.
The trireme derives its name from its three rows of oars on each side, manned with one man per oar
The captain of a trireme was known as a trierarch. This individual was responsible for overseeing the crew, navigation, and overall operation of the trireme during naval battles.
The Trireme was a warship powered by three tiers of oars with a ramming projection in the bow.
trireme
A Trireme
Oar
length of boat: 115-120 ft width of boat: 12ft length of oars: 8-8.5 ft height of boat: 8.5 ft distance between oars 2ft 9in
wood wood
132 oars
trireme