Worksheet 451 · Skill 6
Course to steer
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You are at 304°T, 3.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.8 kn. The current sets 132°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 302°T, 1.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.0 kn. The current sets 148°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 012°T, 2.8 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.3 kn. The current sets 046°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 022°T, 2.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.3 kn. The current sets 048°T at 1.6 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 031°T, 3.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.0 kn. The current sets 024°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 074°T, 3.1 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.7 kn. The current sets 036°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 237°T, 1.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 8.2 kn. The current sets 169°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 082°T, 2.8 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.0 kn. The current sets 249°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 089 °T Speed over the ground: 11.5 kn Time to the mark: 37 min | No. 451001 (worked solution) |
| 2 | Course to steer: 292 °T Speed over the ground: 5.3 kn Time to the mark: 28 min | No. 451002 (worked solution) |
| 3 | Course to steer: 138 °T Speed over the ground: 9.5 kn Time to the mark: 38 min | No. 451003 (worked solution) |
| 4 | Course to steer: 244 °T Speed over the ground: 4.8 kn Time to the mark: 76 min | No. 451004 (worked solution) |
| 5 | Course to steer: 142 °T Speed over the ground: 10.2 kn Time to the mark: 30 min | No. 451005 (worked solution) |
| 6 | Course to steer: 263 °T Speed over the ground: 9.6 kn Time to the mark: 41 min | No. 451006 (worked solution) |
| 7 | Course to steer: 235 °T Speed over the ground: 9.1 kn Time to the mark: 15 min | No. 451007 (worked solution) |
| 8 | Course to steer: 122 °T Speed over the ground: 6.8 kn Time to the mark: 21 min | No. 451008 (worked solution) |