BOTH INTERNATIONAL & INLAND A fishing vessel displaying the lights shown in illustration D067RR below is doing which of the following?

Correct Answer: Option B — fishing by trawling

COLREGS Rule 26(c)(i) establishes that a vessel engaged in trawling exhibits a green light over a white light in a vertical line along with sidelights and a stern light when making way, clearly identifying active net-trawling operations to surrounding vessels.