Worksheet 511 · Skill 6
Course to steer
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You are at 112°T, 1.1 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.8 kn. The current sets 134°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 191°T, 1.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.1 kn. The current sets 344°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 076°T, 2.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.9 kn. The current sets 279°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 045°T, 1.0 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 10.4 kn. The current sets 119°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 295°T, 2.8 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.0 kn. The current sets 234°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 022°T, 2.5 nm from Mill stack, bound for Green can "3". Your speed through the water is 5.6 kn. The current sets 135°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 253°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.2 kn. The current sets 007°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 195°T, 1.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.3 kn. The current sets 109°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 082 °T Speed over the ground: 11.4 kn Time to the mark: 24 min | No. 511001 (worked solution) |
| 2 | Course to steer: 287 °T Speed over the ground: 8.7 kn Time to the mark: 33 min | No. 511002 (worked solution) |
| 3 | Course to steer: 131 °T Speed over the ground: 10.7 kn Time to the mark: 16 min | No. 511003 (worked solution) |
| 4 | Course to steer: 050 °T Speed over the ground: 10.6 kn Time to the mark: 12 min | No. 511004 (worked solution) |
| 5 | Course to steer: 173 °T Speed over the ground: 6.0 kn Time to the mark: 37 min | No. 511005 (worked solution) |
| 6 | Course to steer: 336 °T Speed over the ground: 4.9 kn Time to the mark: 30 min | No. 511006 (worked solution) |
| 7 | Course to steer: 248 °T Speed over the ground: 4.6 kn Time to the mark: 54 min | No. 511007 (worked solution) |
| 8 | Course to steer: 251 °T Speed over the ground: 8.0 kn Time to the mark: 27 min | No. 511008 (worked solution) |