[Gwypaas]

Bunker barges/tankers are standard everwhere, although not underway but docked or at anchor.

Docking at a certain place simply to bunker just doesn't happen on larger vessels where utilization factor is everything.

https://www.marineinsight.com/guidelines/bunkering-is-danger...

[closewith]

Bunkering at anchor is nearly equivalent to bunkering in port, but requires a suitable anchorage. I presume if that was available, this wouldn't be an issue at all.