Worksheet 221 · Skill 6
Course to steer
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You are at 102°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 10.6 kn. The current sets 151°T at 1.5 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 220°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.2 kn. The current sets 272°T at 0.5 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 292°T, 1.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.4 kn. The current sets 178°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 212°T, 2.1 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.4 kn. The current sets 221°T at 0.7 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 027°T, 2.6 nm from Mill stack, bound for Green can "3". Your speed through the water is 8.1 kn. The current sets 301°T at 1.6 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 306°T, 1.6 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 7.9 kn. The current sets 125°T at 1.3 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 089°T, 3.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.7 kn. The current sets 284°T at 1.0 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 056°T, 2.5 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.6 kn. The current sets 180°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: 275 °T Speed over the ground: 9.8 kn Time to the mark: 43 min | No. 221001 (worked solution) |
| 2 | Course to steer: 308 °T Speed over the ground: 5.6 kn Time to the mark: 35 min | No. 221002 (worked solution) |
| 3 | Course to steer: 273 °T Speed over the ground: 9.5 kn Time to the mark: 21 min | No. 221003 (worked solution) |
| 4 | Course to steer: 323 °T Speed over the ground: 8.3 kn Time to the mark: 26 min | No. 221004 (worked solution) |
| 5 | Course to steer: 341 °T Speed over the ground: 9.4 kn Time to the mark: 16 min | No. 221005 (worked solution) |
| 6 | Course to steer: 198 °T Speed over the ground: 8.4 kn Time to the mark: 18 min | No. 221006 (worked solution) |
| 7 | Course to steer: 163 °T Speed over the ground: 8.2 kn Time to the mark: 15 min | No. 221007 (worked solution) |
| 8 | Course to steer: 274 °T Speed over the ground: 5.6 kn Time to the mark: 60 min | No. 221008 (worked solution) |