Worksheet 11 · Skill 6
Course to steer
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You are at 301°T, 3.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.4 kn. The current sets 224°T at 2.5 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 067°T, 2.8 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 10.6 kn. The current sets 358°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 296°T, 4.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.9 kn. The current sets 328°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 243°T, 1.9 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 12.0 kn. The current sets 110°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
You are at 033°T, 1.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.4 kn. The current sets 019°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 037°T, 3.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.5 kn. The current sets 308°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 216°T, 2.2 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.8 kn. The current sets 278°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 276°T, 3.7 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 10.5 kn. The current sets 044°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: 176 °T Speed over the ground: 11.2 kn Time to the mark: 27 min | No. 11001 (worked solution) |
| 2 | Course to steer: 037 °T Speed over the ground: 12.0 kn Time to the mark: 11 min | No. 11002 (worked solution) |
| 3 | Course to steer: 174 °T Speed over the ground: 9.7 kn Time to the mark: 31 min | No. 11003 (worked solution) |
| 4 | Course to steer: 036 °T Speed over the ground: 12.3 kn Time to the mark: 30 min | No. 11004 (worked solution) |
| 5 | Course to steer: 249 °T Speed over the ground: 8.3 kn Time to the mark: 41 min | No. 11005 (worked solution) |
| 6 | Course to steer: 154 °T Speed over the ground: 7.2 kn Time to the mark: 41 min | No. 11006 (worked solution) |
| 7 | Course to steer: 300 °T Speed over the ground: 10.4 kn Time to the mark: 23 min | No. 11007 (worked solution) |
| 8 | Course to steer: 140 °T Speed over the ground: 10.4 kn Time to the mark: 16 min | No. 11008 (worked solution) |