Turning on a diesel motor...at sunset...to charge your battery.
Is...offensive and inconsiderate.
I mean. ..ffs....you had all day to do it

I've never had these issues so its enlightening for me to discuss it .
and I totally agree. If you have a issue....talk to the skipper.
He might not realize or in anyhow. . If he doesn't know ...how can he take action to stop?
Kinda leaves me bewildered someone would be that inconsiderate.
Maybe he was sinking and needed it for the bilges