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Question 1 of 2066636eeb28f7522a1c51babe

BOTH INTERNATIONAL & INLAND In illustration D023RR below item "A" represents the arc of visibility of which of the following lights?

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Question 1 of 20

66636eeb28f7522a1c51babe

BOTH INTERNATIONAL & INLAND In illustration D023RR below item "A" represents the arc of visibility of which of the following lights?

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🔍 Key Concepts

• Rule 21 – Definitions in the Navigation Rules (masthead light, sidelight, sternlight) • Standard arcs of visibility: masthead light 225°, sidelights 112.5° each, sternlight 135° • How these arcs are positioned relative to the ship’s bow and stern

💭 Think About

• Look at item "A" and decide: is this sector centered more toward the bow or the stern of the vessel? • Compare the approximate size of the dark sector in item "A" with 360°. Is it closer to one quarter-circle, a bit more than a quarter, or a bit more than a third? • Ask yourself which lights are seen only from ahead, only from astern, or from both ahead and astern.

✅ Before You Answer

• Verify from Rule 21 that sidelights are 112.5° measured from right (or left) ahead to just abaft the beam. • Verify that the stern light is 135° centered on the stern and not visible right ahead. • Confirm that the masthead light is 225° and extends from just abaft the beam on one side, through ahead, to just abaft the beam on the other side.

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Question 1 of 2066636eeb28f7522a1c51babe

BOTH INTERNATIONAL & INLAND In illustration D023RR below item "A" represents the arc of visibility of which of the following lights?

Back

Question 1 of 20

66636eeb28f7522a1c51babe

BOTH INTERNATIONAL & INLAND In illustration D023RR below item "A" represents the arc of visibility of which of the following lights?

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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