Worksheet 431 · Skill 6
Course to steer
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You are at 045°T, 2.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.3 kn. The current sets 218°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 297°T, 2.2 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 6.7 kn. The current sets 129°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 355°T, 2.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.0 kn. The current sets 323°T at 1.1 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 357°T, 3.0 nm from Mill stack, bound for Bell buoy "HS". Your speed through the water is 5.5 kn. The current sets 333°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 062°T, 3.8 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.8 kn. The current sets 059°T at 0.6 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 017°T, 1.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.2 kn. The current sets 217°T at 0.6 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 042°T, 2.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 6.8 kn. The current sets 255°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 041°T, 2.8 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.7 kn. The current sets 300°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 133 °T Speed over the ground: 6.8 kn Time to the mark: 37 min | No. 431001 (worked solution) |
| 2 | Course to steer: 179 °T Speed over the ground: 7.2 kn Time to the mark: 22 min | No. 431002 (worked solution) |
| 3 | Course to steer: 200 °T Speed over the ground: 5.5 kn Time to the mark: 62 min | No. 431003 (worked solution) |
| 4 | Course to steer: 074 °T Speed over the ground: 5.5 kn Time to the mark: 82 min | No. 431004 (worked solution) |
| 5 | Course to steer: 139 °T Speed over the ground: 10.9 kn Time to the mark: 18 min | No. 431005 (worked solution) |
| 6 | Course to steer: 121 °T Speed over the ground: 10.2 kn Time to the mark: 28 min | No. 431006 (worked solution) |
| 7 | Course to steer: 108 °T Speed over the ground: 5.2 kn Time to the mark: 53 min | No. 431007 (worked solution) |
| 8 | Course to steer: 248 °T Speed over the ground: 8.9 kn Time to the mark: 37 min | No. 431008 (worked solution) |