Worksheet 73 · Skill 6
Course to steer
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You are at 310°T, 3.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.3 kn. The current sets 161°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 037°T, 3.1 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.6 kn. The current sets 296°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 219°T, 2.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.5 kn. The current sets 332°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 045°T, 4.5 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.6 kn. The current sets 264°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 065°T, 2.8 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.1 kn. The current sets 332°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 065°T, 3.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.3 kn. The current sets 342°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 068°T, 1.1 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 7.0 kn. The current sets 198°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 171°T, 1.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.2 kn. The current sets 031°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 202 °T Speed over the ground: 11.2 kn Time to the mark: 28 min | No. 73001 (worked solution) |
| 2 | Course to steer: 150 °T Speed over the ground: 9.7 kn Time to the mark: 30 min | No. 73002 (worked solution) |
| 3 | Course to steer: 233 °T Speed over the ground: 10.4 kn Time to the mark: 16 min | No. 73003 (worked solution) |
| 4 | Course to steer: 169 °T Speed over the ground: 11.6 kn Time to the mark: 27 min | No. 73004 (worked solution) |
| 5 | Course to steer: 247 °T Speed over the ground: 10.6 kn Time to the mark: 42 min | No. 73005 (worked solution) |
| 6 | Course to steer: 138 °T Speed over the ground: 5.5 kn Time to the mark: 34 min | No. 73006 (worked solution) |
| 7 | Course to steer: 037 °T Speed over the ground: 4.7 kn Time to the mark: 47 min | No. 73007 (worked solution) |
| 8 | Course to steer: 233 °T Speed over the ground: 3.1 kn Time to the mark: 66 min | No. 73008 (worked solution) |