Worksheet 641 · Skill 6
Course to steer
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You are at 303°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.7 kn. The current sets 185°T at 1.3 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 043°T, 4.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.2 kn. The current sets 227°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 208°T, 1.5 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.5 kn. The current sets 106°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 113°T, 1.5 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 9.1 kn. The current sets 139°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 028°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 9.1 kn. The current sets 213°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 243°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.6 kn. The current sets 195°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 280°T, 1.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.2 kn. The current sets 231°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 043°T, 2.1 nm from Mill stack, bound for Green can "3". Your speed through the water is 11.9 kn. The current sets 199°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 258 °T Speed over the ground: 12.1 kn Time to the mark: 22 min | No. 641001 (worked solution) |
| 2 | Course to steer: 158 °T Speed over the ground: 9.3 kn Time to the mark: 34 min | No. 641002 (worked solution) |
| 3 | Course to steer: 248 °T Speed over the ground: 6.8 kn Time to the mark: 23 min | No. 641003 (worked solution) |
| 4 | Course to steer: 006 °T Speed over the ground: 8.4 kn Time to the mark: 32 min | No. 641004 (worked solution) |
| 5 | Course to steer: 254 °T Speed over the ground: 10.0 kn Time to the mark: 40 min | No. 641005 (worked solution) |
| 6 | Course to steer: 282 °T Speed over the ground: 11.8 kn Time to the mark: 19 min | No. 641006 (worked solution) |
| 7 | Course to steer: 272 °T Speed over the ground: 6.0 kn Time to the mark: 33 min | No. 641007 (worked solution) |
| 8 | Course to steer: 340 °T Speed over the ground: 11.1 kn Time to the mark: 18 min | No. 641008 (worked solution) |