
11-10-2011
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Senior Member
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Join Date: Sep 2006
Location: Yeocomico River, VA
Posts: 1,006
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ebs001 is right as follows:
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sidelights and sternlight [can] be combined into a single fixture and carried at the masthead. This combined navigation light is often called a "tricolor" light. It cannot be used, however, while an auxiliary engine propels the boat, so a sailing vessel equipped with an engine must be fitted with regular sidelight and sternlight even if a "tricolor" light is used when under sail alone. The "tricolor" light may not be used when the regular sidelights are on. Display one or the other but not both.
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In addition to the sidelights and stern light, a steaming light visible through 225 degrees is needed. However:
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Underway between sunset and sunrise or in restricted visibility, a powerboat of less than 164 feet (50 m) or a sailboat operating under power must display red and green sidelights, each visible for 2 miles through an arc of 112.5 degrees. The red arc starts at the bow and sweeps to 22.5 degrees abaft the beam to port; the green arc mirrors this to starboard. The boat must also display a white masthead light visible for 5 miles (3 miles if the boat is less than 65 ft. or 20 m long) through an arc of 225 degrees centered ahead, and a white stern light visible for 2 miles through an arc of 135 degrees centered behind. If the boat is less than 39 feet (12 m) long, the masthead and stern lights can be combined
Read more: Navigation Lights: Information from Answers.com
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Sabre 38 "Victoria"
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