its a sweep oar
a rowlock (UK) or an oarlock (US).
There are 2 parts to an oar holder. The first part is the rigger which is attached to the side of the shell. The second part is the oar lock which swivels with the stroke and keeps the oar in place. This is mounted on top of the rigger.
oar
Rowers
oar
blade/oar
br oar n
Oar would probably be the closest, although it isn't really a good likeness.
Corixidae and hellgrammites are the two types of insects that have the oar-like legs.
Boscoe Holder's birth name is Arthur Aldwyn Holder.
Carlton Holder's birth name is Carlton Kenneth Holder.