Worksheet 450 · Skill 6
Course to steer
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You are at 066°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.9 kn. The current sets 033°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 079°T, 1.5 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.8 kn. The current sets 045°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 007°T, 1.9 nm from Mill stack, bound for Red nun "2". Your speed through the water is 9.4 kn. The current sets 068°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 165°T, 1.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.9 kn. The current sets 019°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 015°T, 1.6 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.8 kn. The current sets 166°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 297°T, 3.8 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.7 kn. The current sets 102°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 216°T, 2.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 124°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 026°T, 2.7 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.1 kn. The current sets 090°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: 266 °T Speed over the ground: 8.3 kn Time to the mark: 38 min | No. 450001 (worked solution) |
| 2 | Course to steer: 076 °T Speed over the ground: 8.9 kn Time to the mark: 18 min | No. 450002 (worked solution) |
| 3 | Course to steer: 307 °T Speed over the ground: 8.4 kn Time to the mark: 17 min | No. 450003 (worked solution) |
| 4 | Course to steer: 097 °T Speed over the ground: 6.4 kn Time to the mark: 50 min | No. 450004 (worked solution) |
| 5 | Course to steer: 121 °T Speed over the ground: 12.1 kn Time to the mark: 24 min | No. 450005 (worked solution) |
| 6 | Course to steer: 157 °T Speed over the ground: 10.2 kn Time to the mark: 22 min | No. 450006 (worked solution) |
| 7 | Course to steer: 291 °T Speed over the ground: 3.7 kn Time to the mark: 71 min | No. 450007 (worked solution) |
| 8 | Course to steer: 171 °T Speed over the ground: 5.8 kn Time to the mark: 53 min | No. 450008 (worked solution) |