Worksheet 571 · Skill 6
Course to steer
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You are at 264°T, 3.5 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.1 kn. The current sets 354°T at 2.1 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 281°T, 3.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.6 kn. The current sets 219°T at 1.7 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 324°T, 2.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.1 kn. The current sets 337°T at 1.8 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 267°T, 3.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.2 kn. The current sets 113°T at 1.8 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 028°T, 1.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.0 kn. The current sets 202°T at 2.2 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 062°T, 1.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.6 kn. The current sets 006°T at 0.8 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 178°T, 1.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.8 kn. The current sets 033°T at 1.9 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
You are at 344°T, 1.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.3 kn. The current sets 109°T at 0.9 kn.
Find the true course to steer that keeps you on the straight track to the buoy, your speed over the ground, and how many minutes it will take.
Tolerance: 3° (the track is measured on the chart), 0.3 kn and 3 minutes (or 5 %).
Course to steer: ________ °T Speed over the ground: ________ kn Time to the mark: ________ min
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 133 °T Speed over the ground: 9.6 kn Time to the mark: 14 min | No. 571001 (worked solution) |
| 2 | Course to steer: 172 °T Speed over the ground: 6.9 kn Time to the mark: 33 min | No. 571002 (worked solution) |
| 3 | Course to steer: 197 °T Speed over the ground: 8.8 kn Time to the mark: 37 min | No. 571003 (worked solution) |
| 4 | Course to steer: 201 °T Speed over the ground: 9.4 kn Time to the mark: 19 min | No. 571004 (worked solution) |
| 5 | Course to steer: 108 °T Speed over the ground: 9.1 kn Time to the mark: 29 min | No. 571005 (worked solution) |
| 6 | Course to steer: 141 °T Speed over the ground: 9.1 kn Time to the mark: 24 min | No. 571006 (worked solution) |
| 7 | Course to steer: 109 °T Speed over the ground: 12.4 kn Time to the mark: 18 min | No. 571007 (worked solution) |
| 8 | Course to steer: 216 °T Speed over the ground: 11.1 kn Time to the mark: 26 min | No. 571008 (worked solution) |