If his freezer
is off and he looses his frozen food
so soon into the voyage I would abandon it, return to St A and get another hyro grnerator and some spare props.
The lesson, here again, is it doesnt matter how much money
and publicity you throw at a voyage you need to get out and test the boat.
Also being on a time limit artifically set, 150 days, means someone divided the miles by the days and got to a boat speed and decided that the water
generators would cope.... A prudent method is to double what you think a passage
will take, say 300 days, and then work your boat speed generating capacity for that, and cloudy skys. Then it more likely to carry spares because 300 days to have those gadgets work is a loooong time.
The boat may be slick and the operator experienced, but the problems are similar to any passage