Seamanship 5 Practice Test

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Which color is the port side light?
Correct Answer:
Red
Explanation:
Port side light is red. In standard navigation lights, red is shown on the left (port) side and green on the right (starboard), with white lights oriented toward the stern. This fixed color pairing lets other vessels quickly judge a boat’s orientation at night or in poor visibility, helping prevent collisions. The other colors don’t fit because green is used for the opposite side, and blue or yellow aren’t used for the port sidelight in the normal navigation-light scheme.

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