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Deck : Rules of the Road - 235/1025
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BOTH INTERNATIONAL & INLAND You are on a vessel heading due south and see the lights shown in illustration D051RR below one point on the port bow. What direction could this vessel be heading in?
A) NW
B) NE
C) SE
D) SW
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Illustration D051RR

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Comments
rishu01 - 2023-11-30 06:39:13
Registered (6)
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nramo7 - 2023-06-06 23:01:55
Expired Member (3)
One point = 11.25 degrees, so in this case if you are heading South (180), then by the arc of the green light (112.5 degrees) alone they could be heading anywhere from 349 to 237. Based on that information they can be heading W (270) or NW (315). SW(224), S (180), SE (135), E (090), NE (045), and N (000) are not within that range. In the answers provided W was not there, so the only answer available is NW within the calculated range of courses. Also, seeing that there was no red sidelight and the mast headlights are offset, it eliminates 349 as a possible course.
MyckenzieToler - 2022-04-01 13:02:47
Member (15)
I'll add my two cents since the comment section is so controversial. This configuration is correct. If you think it's wrong, I urge you to draw it out. Looking south, one point port bow just drawn in that configuration as in the picture and you'll get the same conclusion. Best of luck everyone!
Sailorboy2017 - 2017-12-30 17:06:41
Member (12)
ok there is only one possible answer! THE VESSEL IS HEADING SE !!!
Moreman - 2016-05-09 01:54:07
Member (2)
How about SE. I am going South and see 2 steaming lights good a part which means I am well on the starboard side with green, starboard light on my port.
ncalcamu - 2016-01-10 14:14:08
Member (5)
This answer is correct. The left masthead light is above the right masthead light indicating the vessel is moving relative port to starboard. Since ownship is traveling south, the sighted vessel is traveling in a westward direction. Answers B and C are incorrect. One point off the port bow is ahead of ownship. A vessel ahead traveling SW would show its stern light. The answer is NW.
Shawn - 2015-10-17 13:59:15
Expired Member (195)
The answer is definitely NW.. I've made a drawing to help visualize this question.. click here
sailorJ - 2015-10-16 19:06:10
Member (1)
This is very wrong
Swoc382 - 2015-08-13 06:40:59
Member (5)
should be heading SW
drewon752 - 2015-06-21 13:33:41
Member (1)
This answer is incorrect.
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