The last oared warships in Baltic service

When were naval vessels last designed and used with oars or sweeps in mind?

Ship's boats retained oars much later, but the panel places the last significant galley warfare with Russia and Sweden in the Baltic around the Napoleonic era.

The answer distinguishes small boats that remained capable of being rowed from warships designed around galley tactics. For the latter, the panel points to Russian and Swedish fighting in the confined Baltic during the Napoleonic period. The distinction helps explain why oars survived in auxiliary craft long after they ceased to define major warship propulsion.