Worksheet 635 · Skill 6
Course to steer
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You are at 264°T, 1.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.7 kn. The current sets 162°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
You are at 289°T, 2.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.4 kn. The current sets 214°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 255°T, 2.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.0 kn. The current sets 089°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
You are at 047°T, 1.8 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.2 kn. The current sets 287°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 280°T, 2.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.2 kn. The current sets 292°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 306°T, 1.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.6 kn. The current sets 307°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 269°T, 2.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.0 kn. The current sets 050°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 246°T, 2.0 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.8 kn. The current sets 105°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 302 °T Speed over the ground: 6.7 kn Time to the mark: 23 min | No. 635001 (worked solution) |
| 2 | Course to steer: 158 °T Speed over the ground: 10.6 kn Time to the mark: 14 min | No. 635002 (worked solution) |
| 3 | Course to steer: 211 °T Speed over the ground: 8.2 kn Time to the mark: 19 min | No. 635003 (worked solution) |
| 4 | Course to steer: 245 °T Speed over the ground: 7.8 kn Time to the mark: 54 min | No. 635004 (worked solution) |
| 5 | Course to steer: 193 °T Speed over the ground: 8.1 kn Time to the mark: 28 min | No. 635005 (worked solution) |
| 6 | Course to steer: 268 °T Speed over the ground: 12.3 kn Time to the mark: 12 min | No. 635006 (worked solution) |
| 7 | Course to steer: 265 °T Speed over the ground: 6.1 kn Time to the mark: 23 min | No. 635007 (worked solution) |
| 8 | Course to steer: 235 °T Speed over the ground: 5.5 kn Time to the mark: 22 min | No. 635008 (worked solution) |