Worksheet 173 · Skill 6
Course to steer
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You are at 307°T, 2.8 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 6.0 kn. The current sets 289°T at 1.8 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 042°T, 3.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.4 kn. The current sets 298°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 333°T, 1.6 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 9.0 kn. The current sets 029°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 142°T, 1.7 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.6 kn. The current sets 332°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
You are at 072°T, 2.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.9 kn. The current sets 146°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 031°T, 3.1 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.3 kn. The current sets 195°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
You are at 233°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.6 kn. The current sets 242°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 014°T, 1.3 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 8.6 kn. The current sets 001°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 155 °T Speed over the ground: 4.9 kn Time to the mark: 40 min | No. 173001 (worked solution) |
| 2 | Course to steer: 159 °T Speed over the ground: 6.5 kn Time to the mark: 46 min | No. 173002 (worked solution) |
| 3 | Course to steer: 082 °T Speed over the ground: 10.7 kn Time to the mark: 26 min | No. 173003 (worked solution) |
| 4 | Course to steer: 112 °T Speed over the ground: 10.1 kn Time to the mark: 16 min | No. 173004 (worked solution) |
| 5 | Course to steer: 276 °T Speed over the ground: 8.6 kn Time to the mark: 50 min | No. 173005 (worked solution) |
| 6 | Course to steer: 144 °T Speed over the ground: 7.8 kn Time to the mark: 39 min | No. 173006 (worked solution) |
| 7 | Course to steer: 280 °T Speed over the ground: 9.7 kn Time to the mark: 26 min | No. 173007 (worked solution) |
| 8 | Course to steer: 071 °T Speed over the ground: 9.0 kn Time to the mark: 25 min | No. 173008 (worked solution) |