Two funnel paddle steamer leaving Clacton Pier. (to take visitors out to a Royal Navy cruiser ?)

One of a set of 4 photographs sent to Clacton Pier Company some time ago. They were taken on Clacton Pier, these do have some age as they are printed on the smaller size 3"x"2 of photographic paper, all share the same photographic stamp on the reverse.
The Royal Navy ship appears to be anchored off, and the paddle steamer taking visitors out to it.
The pictures are undated but thought to be between WW1 and WW2.

Sent to the Museum by Peter Watts of the Pier Company in the hope that someone may be able to identify the ships.

Date: c1931