Power factor on a single
boat means absolutely nothing to a commercial
power grid. Unless the OP was talking about running off his generator
, the PF is meaningless to his issue.
We experience this often in many marinas
and it is related to the quality and condition of their wiring/power. However, the marinas
we are in are often wired with whatever wire is available and strung through the water
with multiple connections, etc - so these power drops are understandable.
I would expect US marinas wired to code to be better.