Worksheet 717 · Skill 6
Course to steer
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You are at 265°T, 3.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.3 kn. The current sets 262°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 298°T, 4.6 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.8 kn. The current sets 070°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 310°T, 2.8 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 9.8 kn. The current sets 329°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 081°T, 3.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.3 kn. The current sets 237°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 017°T, 1.5 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.2 kn. The current sets 352°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 041°T, 2.8 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.8 kn. The current sets 178°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 002°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.4 kn. The current sets 118°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 242°T, 2.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.8 kn. The current sets 081°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 121 °T Speed over the ground: 4.6 kn Time to the mark: 28 min | No. 717001 (worked solution) |
| 2 | Course to steer: 156 °T Speed over the ground: 12.0 kn Time to the mark: 22 min | No. 717002 (worked solution) |
| 3 | Course to steer: 181 °T Speed over the ground: 7.8 kn Time to the mark: 34 min | No. 717003 (worked solution) |
| 4 | Course to steer: 107 °T Speed over the ground: 8.1 kn Time to the mark: 17 min | No. 717004 (worked solution) |
| 5 | Course to steer: 041 °T Speed over the ground: 12.0 kn Time to the mark: 15 min | No. 717005 (worked solution) |
| 6 | Course to steer: 259 °T Speed over the ground: 9.0 kn Time to the mark: 46 min | No. 717006 (worked solution) |
| 7 | Course to steer: 258 °T Speed over the ground: 7.3 kn Time to the mark: 42 min | No. 717007 (worked solution) |
| 8 | Course to steer: 283 °T Speed over the ground: 5.0 kn Time to the mark: 36 min | No. 717008 (worked solution) |