Worksheet 149 · Skill 6
Course to steer
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You are at 220°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.7 kn. The current sets 311°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 326°T, 2.2 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 10.4 kn. The current sets 120°T at 1.2 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 239°T, 1.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.8 kn. The current sets 261°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 001°T, 1.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.9 kn. The current sets 222°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 353°T, 1.7 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 8.1 kn. The current sets 099°T at 2.0 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 077°T, 1.2 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 11.0 kn. The current sets 334°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 048°T, 1.8 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.3 kn. The current sets 342°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 154°T, 2.7 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 6.9 kn. The current sets 357°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 215 °T Speed over the ground: 6.0 kn Time to the mark: 23 min | No. 149001 (worked solution) |
| 2 | Course to steer: 194 °T Speed over the ground: 10.8 kn Time to the mark: 19 min | No. 149002 (worked solution) |
| 3 | Course to steer: 042 °T Speed over the ground: 10.5 kn Time to the mark: 31 min | No. 149003 (worked solution) |
| 4 | Course to steer: 113 °T Speed over the ground: 9.5 kn Time to the mark: 32 min | No. 149004 (worked solution) |
| 5 | Course to steer: 066 °T Speed over the ground: 9.8 kn Time to the mark: 25 min | No. 149005 (worked solution) |
| 6 | Course to steer: 040 °T Speed over the ground: 11.4 kn Time to the mark: 11 min | No. 149006 (worked solution) |
| 7 | Course to steer: 119 °T Speed over the ground: 10.0 kn Time to the mark: 28 min | No. 149007 (worked solution) |
| 8 | Course to steer: 280 °T Speed over the ground: 7.1 kn Time to the mark: 25 min | No. 149008 (worked solution) |