If there is no set or drift, at what time...

Question 1 of 29218fork_74d606c0b64c4afea81

If there is no set or drift, at what time would you be abeam of Bartlett Reef Light?

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Question 1 of 29218

Q

If there is no set or drift, at what time would you be abeam of Bartlett Reef Light?

🔍 Key Concepts

• Relative bearing abeam (90° from your ship’s heading) and how to find the time you reach that point • Using time-speed-distance calculations along a track line on the chart • Understanding that no set or drift means your course and speed made good equal your ordered course and speed

💭 Think About

• From your last known fix before Bartlett Reef Light, how many nautical miles do you travel along the track line until the light is exactly abeam? • Given your speed through the water, how long (in minutes) does it take to travel that distance, and what clock time does that correspond to from your last fix time? • How do you determine on the chart where the light will be when it is on your beam (90° to port or starboard) relative to your track?

✅ Before You Answer

• Confirm your assumed track line and direction of travel relative to Bartlett Reef Light • Verify your speed in knots and convert distance to time using $\text{Time (hours)} = \frac{\text{Distance (NM)}}{\text{Speed (kt)}}$ • Add the computed elapsed time correctly to the time of the last fix (watch for hour/minute carry-over)