scull
a bank
An ancient vessel with two banks of oars was called a bireme.
An ancient ship with two banks of oars is called a "bireme".
They are called oars.
These structures are called cilia and they do have an oar like motion; power stroke and return/relaxation stroke.
An oar pin is also called a rowlock pin or a thole.
it was called a trireme
A vessel with two tiers of oars was/is a bireme.
Triremes - three (tri-) banks of oars.
Tagalog Translation of OARS: sagwan
Theere are 132 oars on a trireme