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Deck: Rules of the Road

Question 211 of 1,025

BOTH INTERNATIONAL & INLAND You are on a vessel heading due north and see the lights shown in illustration D051RR below, one point on your port bow. What direction could this vessel be heading in?

USCG illustration D051RR for Deck Rules of the Road question 211
Illustration D051RR
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Mariner discussion

Comments from mariners who studied this question.

mo monadyne · Mar 29, 2016
This makes no sense. If the vessel were heading southeast, we'd see the Green light on the right, as it would be in the bow of the vessel. The masthead light would be to the left of that, and the stern light even farther to the left.
se semicolonsutra · Oct 20, 2016
There is nothing to say that the sidelights have to be in the front of the vessel.
pb pboat69 · Feb 11, 2018
don't get it
Jm Jmcjr · Feb 14, 2018
This is a terrible question.
to towboatjones · May 19, 2018
???????
bi bigghigg777 · Sep 18, 2018
I think its a solid question. Makes you think. This is a vessel greater then 50 meters in length (which means a forward and aft white mast light) with a starboard aspect (green running light).
un unknowar · Jul 2, 2020
Not thing diffical, you just see the green light at lower that mean show on stbd side. That you can consider to direction as answer choice.
Mr Mrx6m · Nov 12, 2020
I don’t understand how you wouldn’t see the same lights if it where heading NE,...
rm rmseattle · Nov 12, 2020
Imagine if it was dead ahead. The sidelight would disappear if the vessel changed course to the left and went past 067.5 degrees and only the stern light would be visible. In this case, the vessel is sighted at 011.25 degrees. The lowest number course the vessel could be on and the green sidelight still be visible is 078.75 degrees and the highest number course would be 191.25 degrees.