Two warships in Plymouth Harbour opposite Mount Edgcumbe

Medium includes graphite and pen and ink. Previously described in the title as 'frigates', the ship on the right is a two-decker, the otyher possibly a frigate or something smaller seen in stern view. The two decker appears to be running into the Hamoaze under a pilot since flying a white-bordered Union at the fore. The location description appears to be based on the building seen amid trees upper left being Edgcumbe House [PvdM 1/18]