Worksheet 439 · Skill 6
Course to steer
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You are at 071°T, 3.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.2 kn. The current sets 005°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 023°T, 1.7 nm from Mill stack, bound for Green can "3". Your speed through the water is 7.8 kn. The current sets 314°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 274°T, 3.1 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 10.5 kn. The current sets 071°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 212°T, 2.0 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 9.0 kn. The current sets 224°T at 1.4 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 134°T, 0.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.1 kn. The current sets 150°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 266°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.5 kn. The current sets 068°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 027°T, 2.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.6 kn. The current sets 069°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 043°T, 3.1 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.5 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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 157 °T Speed over the ground: 7.5 kn Time to the mark: 22 min | No. 439001 (worked solution) |
| 2 | Course to steer: 000 °T Speed over the ground: 9.7 kn Time to the mark: 19 min | No. 439002 (worked solution) |
| 3 | Course to steer: 154 °T Speed over the ground: 11.0 kn Time to the mark: 12 min | No. 439003 (worked solution) |
| 4 | Course to steer: 251 °T Speed over the ground: 10.3 kn Time to the mark: 12 min | No. 439004 (worked solution) |
| 5 | Course to steer: 282 °T Speed over the ground: 7.5 kn Time to the mark: 44 min | No. 439005 (worked solution) |
| 6 | Course to steer: 213 °T Speed over the ground: 4.3 kn Time to the mark: 44 min | No. 439006 (worked solution) |
| 7 | Course to steer: 114 °T Speed over the ground: 13.5 kn Time to the mark: 13 min | No. 439007 (worked solution) |
| 8 | Course to steer: 144 °T Speed over the ground: 8.4 kn Time to the mark: 32 min | No. 439008 (worked solution) |