Worksheet 151 · Skill 6
Course to steer
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You are at 210°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.4 kn. The current sets 339°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 342°T, 2.6 nm from Mill stack, bound for Green can "3". Your speed through the water is 10.5 kn. The current sets 144°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 019°T, 2.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.5 kn. The current sets 219°T at 0.7 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 034°T, 1.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.1 kn. The current sets 278°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 237°T, 1.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.7 kn. The current sets 167°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 307°T, 3.6 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.7 kn. The current sets 325°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 196°T, 1.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.6 kn. The current sets 128°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 138°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.8 kn. The current sets 006°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 236 °T Speed over the ground: 11.1 kn Time to the mark: 14 min | No. 151001 (worked solution) |
| 2 | Course to steer: 012 °T Speed over the ground: 9.1 kn Time to the mark: 15 min | No. 151002 (worked solution) |
| 3 | Course to steer: 145 °T Speed over the ground: 9.7 kn Time to the mark: 33 min | No. 151003 (worked solution) |
| 4 | Course to steer: 256 °T Speed over the ground: 13.0 kn Time to the mark: 26 min | No. 151004 (worked solution) |
| 5 | Course to steer: 232 °T Speed over the ground: 11.4 kn Time to the mark: 17 min | No. 151005 (worked solution) |
| 6 | Course to steer: 108 °T Speed over the ground: 7.8 kn Time to the mark: 53 min | No. 151006 (worked solution) |
| 7 | Course to steer: 251 °T Speed over the ground: 9.8 kn Time to the mark: 18 min | No. 151007 (worked solution) |
| 8 | Course to steer: 248 °T Speed over the ground: 10.1 kn Time to the mark: 32 min | No. 151008 (worked solution) |