Worksheet 239 · Skill 6
Course to steer
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You are at 155°T, 3.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.9 kn. The current sets 153°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 035°T, 2.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 128°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 028°T, 3.3 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 7.9 kn. The current sets 315°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 287°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.9 kn. The current sets 213°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 087°T, 2.3 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.9 kn. The current sets 077°T at 0.6 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 036°T, 2.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.3 kn. The current sets 012°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 217°T, 2.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.2 kn. The current sets 009°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 030°T, 1.8 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 10.9 kn. The current sets 308°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: 276 °T Speed over the ground: 7.3 kn Time to the mark: 41 min | No. 239001 (worked solution) |
| 2 | Course to steer: 267 °T Speed over the ground: 4.4 kn Time to the mark: 90 min | No. 239002 (worked solution) |
| 3 | Course to steer: 103 °T Speed over the ground: 5.9 kn Time to the mark: 22 min | No. 239003 (worked solution) |
| 4 | Course to steer: 265 °T Speed over the ground: 8.1 kn Time to the mark: 31 min | No. 239004 (worked solution) |
| 5 | Course to steer: 355 °T Speed over the ground: 11.0 kn Time to the mark: 20 min | No. 239005 (worked solution) |
| 6 | Course to steer: 145 °T Speed over the ground: 8.3 kn Time to the mark: 32 min | No. 239006 (worked solution) |
| 7 | Course to steer: 227 °T Speed over the ground: 4.9 kn Time to the mark: 30 min | No. 239007 (worked solution) |
| 8 | Course to steer: 278 °T Speed over the ground: 12.1 kn Time to the mark: 36 min | No. 239008 (worked solution) |