Royal William Yard is worth a visit, lots of restaurants within the old garrison. You could get the Cremyll foot ferry across to Mount Edgcumbe from near there. Also lots of restaurants down in the Barbican area with plenty of bars
Thin line of soap helped hold a razor finish?
Electric Iron if you were lucky, one per mess provided for 26 trainees, you had to learn to share and help each other, no washing machines, all done by hand, including sheets.