The Wet Dock, Penzance - c.1960

is that the TSV Satellite with the long funnel?

THV Satellite closed service in 1961, but yes, that was the Satellite http://www.simplonpc.co.uk/TrinityHouse.html

In the foreground is the towns “deep sea divers” boat. At that time the town retained a diver to inspect and repair the sea walls and harbour gate. The diver I remember was Mr Omar Pascoe - who lived in Daniel Place.

A different age, before the aqualung, etc,...