For the Black and Baltic seas campaigns I prepared a list of the mayor ships of the Russian Empire.
Baltic Fleet:
Dreadnought
Gangut class
pre-dreadnought:
Borodino class
cruisers:
Bayan class CA
Novik class CL
Destroyers and torpedo boats:
Novik class DD
Lovkiy class TB
Black sea Fleet:
battleship:
Imperatritsa Mariya class (entered in war in late 1916), 3 units the Imperatritsa mariya sank by sabotation on october 20th 1916.
cruisers
Pallada class CA
Boyarin class CL
destroyers and tb:
Lovkiy class TB
Finn class DD