Worksheet 311 · Skill 6
Course to steer
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You are at 131°T, 2.9 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 9.3 kn. The current sets 024°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 054°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.7 kn. The current sets 168°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 048°T, 1.6 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 8.2 kn. The current sets 031°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 137°T, 1.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.0 kn. The current sets 163°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 068°T, 2.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.3 kn. The current sets 347°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 247°T, 2.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.4 kn. The current sets 068°T at 0.9 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 067°T, 2.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.3 kn. The current sets 327°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 334°T, 1.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.9 kn. The current sets 293°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 254 °T Speed over the ground: 8.3 kn Time to the mark: 38 min | No. 311001 (worked solution) |
| 2 | Course to steer: 269 °T Speed over the ground: 6.6 kn Time to the mark: 59 min | No. 311002 (worked solution) |
| 3 | Course to steer: 351 °T Speed over the ground: 9.2 kn Time to the mark: 37 min | No. 311003 (worked solution) |
| 4 | Course to steer: 260 °T Speed over the ground: 9.9 kn Time to the mark: 25 min | No. 311004 (worked solution) |
| 5 | Course to steer: 246 °T Speed over the ground: 8.2 kn Time to the mark: 53 min | No. 311005 (worked solution) |
| 6 | Course to steer: 274 °T Speed over the ground: 4.6 kn Time to the mark: 38 min | No. 311006 (worked solution) |
| 7 | Course to steer: 122 °T Speed over the ground: 7.4 kn Time to the mark: 29 min | No. 311007 (worked solution) |
| 8 | Course to steer: 200 °T Speed over the ground: 12.0 kn Time to the mark: 23 min | No. 311008 (worked solution) |