The size of the towing vessel is also relevant here, but it is not mentioned in the question.
Deck
Rules of the Road: BOTH INTERNATIONAL & INLAND You are towing two barges astern. The length of the...
Discussing this exam question.
first test
Rule 24.a.i.
Seems a little misleading. Aren't these two white lights masthead lights? Then aft yellow over white tow lights...?
Very misleading. Towing lights... (1 white towing light below 1 yellow towing light) = 2 towing lights?
Tow lights are not masthead lights. Answer should be 0. Correct tow light shown is 1 YELLOW tow light over the stern light.
There is no such object as a white tow light. See rule 21.(d)