Worksheet 581 · Skill 6
Course to steer
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You are at 067°T, 3.0 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.0 kn. The current sets 212°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 056°T, 3.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.0 kn. The current sets 206°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 001°T, 1.3 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 11.4 kn. The current sets 329°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 075°T, 1.8 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 11.3 kn. The current sets 059°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 320°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.2 kn. The current sets 189°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 227°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.4 kn. The current sets 073°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 098°T, 1.8 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 9.8 kn. The current sets 314°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 260°T, 2.5 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 8.5 kn. The current sets 076°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 288 °T Speed over the ground: 7.1 kn Time to the mark: 53 min | No. 581001 (worked solution) |
| 2 | Course to steer: 169 °T Speed over the ground: 9.0 kn Time to the mark: 28 min | No. 581002 (worked solution) |
| 3 | Course to steer: 273 °T Speed over the ground: 12.4 kn Time to the mark: 33 min | No. 581003 (worked solution) |
| 4 | Course to steer: 035 °T Speed over the ground: 13.2 kn Time to the mark: 14 min | No. 581004 (worked solution) |
| 5 | Course to steer: 280 °T Speed over the ground: 6.2 kn Time to the mark: 28 min | No. 581005 (worked solution) |
| 6 | Course to steer: 265 °T Speed over the ground: 3.6 kn Time to the mark: 79 min | No. 581006 (worked solution) |
| 7 | Course to steer: 011 °T Speed over the ground: 10.4 kn Time to the mark: 23 min | No. 581007 (worked solution) |
| 8 | Course to steer: 199 °T Speed over the ground: 8.1 kn Time to the mark: 16 min | No. 581008 (worked solution) |