Worksheet 157 · Skill 6
Course to steer
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You are at 107°T, 1.9 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.6 kn. The current sets 137°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 351°T, 2.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.3 kn. The current sets 339°T at 0.8 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 025°T, 3.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.3 kn. The current sets 022°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 295°T, 2.7 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.7 kn. The current sets 276°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 292°T, 3.7 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.9 kn. The current sets 183°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 044°T, 3.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.2 kn. The current sets 035°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 256°T, 2.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.5 kn. The current sets 356°T at 1.2 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 225°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.9 kn. The current sets 336°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 266 °T Speed over the ground: 6.3 kn Time to the mark: 49 min | No. 157001 (worked solution) |
| 2 | Course to steer: 206 °T Speed over the ground: 10.8 kn Time to the mark: 30 min | No. 157002 (worked solution) |
| 3 | Course to steer: 166 °T Speed over the ground: 8.4 kn Time to the mark: 40 min | No. 157003 (worked solution) |
| 4 | Course to steer: 185 °T Speed over the ground: 9.8 kn Time to the mark: 27 min | No. 157004 (worked solution) |
| 5 | Course to steer: 137 °T Speed over the ground: 7.8 kn Time to the mark: 27 min | No. 157005 (worked solution) |
| 6 | Course to steer: 140 °T Speed over the ground: 8.1 kn Time to the mark: 33 min | No. 157006 (worked solution) |
| 7 | Course to steer: 205 °T Speed over the ground: 7.5 kn Time to the mark: 24 min | No. 157007 (worked solution) |
| 8 | Course to steer: 268 °T Speed over the ground: 7.5 kn Time to the mark: 34 min | No. 157008 (worked solution) |