Found your vessel online; looks like a very tidy well engineered unit. The motor
is fitted with a gardner 2UC G/box ,it is better than a fair a chance it would be a original marine
engine they also had a alloy sump.
The original 5lw had a rating of 70hp @ 1300, they latter became 76hp @ 1500. Industrial & road transport engines 96 hp @ 1700. A lot of marine
engines have been taken out to this rating.
I guess at this time of year you will be going home via the bight, hopefully the weather
Leave Murphy on the Wharf!