🔍 Key Concepts

• Speed by celestial (Sun) check requires the Sun to be on or near the beam • Relationship between ship’s heading and the azimuth (bearing) of the Sun when doing a speed check • How a beam bearing is defined relative to the ship’s fore‑and‑aft line

💭 Think About

• For a speed check using the Sun, where relative to your bow should the Sun be: ahead, astern, or on the beam? • If your true course is 150°T, what true bearings correspond to objects exactly on your port and starboard beams? • Which of the choices matches a bearing that would place the Sun roughly 90° from your heading, giving you the best geometry for a speed check?

✅ Before You Answer

• Confirm that a beam bearing is 90° from the ship’s heading, not some other angle • Compute both port and starboard beam true bearings from a course of 150°T and see which (if any) is listed among the answers • Make sure you are thinking in true bearings (°T), consistent with how the course is given