Worksheet 471 · Skill 6
Course to steer
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You are at 031°T, 1.1 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.9 kn. The current sets 166°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 243°T, 2.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.1 kn. The current sets 276°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 100°T, 2.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.4 kn. The current sets 136°T at 2.4 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 260°T, 3.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.5 kn. The current sets 214°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 080°T, 1.1 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.7 kn. The current sets 295°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 349°T, 0.8 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.5 kn. The current sets 266°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 106°T, 1.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.5 kn. The current sets 278°T at 2.3 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 059°T, 1.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.9 kn. The current sets 041°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 093 °T Speed over the ground: 8.7 kn Time to the mark: 36 min | No. 471001 (worked solution) |
| 2 | Course to steer: 197 °T Speed over the ground: 10.8 kn Time to the mark: 11 min | No. 471002 (worked solution) |
| 3 | Course to steer: 074 °T Speed over the ground: 6.9 kn Time to the mark: 30 min | No. 471003 (worked solution) |
| 4 | Course to steer: 191 °T Speed over the ground: 8.7 kn Time to the mark: 18 min | No. 471004 (worked solution) |
| 5 | Course to steer: 127 °T Speed over the ground: 7.8 kn Time to the mark: 26 min | No. 471005 (worked solution) |
| 6 | Course to steer: 055 °T Speed over the ground: 3.8 kn Time to the mark: 61 min | No. 471006 (worked solution) |
| 7 | Course to steer: 119 °T Speed over the ground: 9.4 kn Time to the mark: 18 min | No. 471007 (worked solution) |
| 8 | Course to steer: 253 °T Speed over the ground: 7.2 kn Time to the mark: 52 min | No. 471008 (worked solution) |