Worksheet 4 · Skill 6
Course to steer
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You are at 272°T, 3.7 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.3 kn. The current sets 002°T at 1.5 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 042°T, 1.1 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 7.4 kn. The current sets 125°T at 1.9 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 046°T, 3.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.1 kn. The current sets 240°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 357°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.9 kn. The current sets 026°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 191°T, 1.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.9 kn. The current sets 180°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 256°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.6 kn. The current sets 004°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 263°T, 2.3 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.6 kn. The current sets 357°T at 2.2 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 344°T, 1.0 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 11.0 kn. The current sets 167°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 138 °T Speed over the ground: 8.3 kn Time to the mark: 19 min | No. 4001 (worked solution) |
| 2 | Course to steer: 292 °T Speed over the ground: 5.6 kn Time to the mark: 78 min | No. 4002 (worked solution) |
| 3 | Course to steer: 123 °T Speed over the ground: 10.6 kn Time to the mark: 24 min | No. 4003 (worked solution) |
| 4 | Course to steer: 240 °T Speed over the ground: 4.9 kn Time to the mark: 70 min | No. 4004 (worked solution) |
| 5 | Course to steer: 300 °T Speed over the ground: 5.4 kn Time to the mark: 53 min | No. 4005 (worked solution) |
| 6 | Course to steer: 248 °T Speed over the ground: 6.9 kn Time to the mark: 34 min | No. 4006 (worked solution) |
| 7 | Course to steer: 245 °T Speed over the ground: 6.1 kn Time to the mark: 31 min | No. 4007 (worked solution) |
| 8 | Course to steer: 307 °T Speed over the ground: 10.0 kn Time to the mark: 33 min | No. 4008 (worked solution) |