Worksheet 579 · Skill 6
Course to steer
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You are at 304°T, 3.6 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.9 kn. The current sets 291°T at 2.3 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 058°T, 1.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.2 kn. The current sets 068°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 068°T, 3.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.0 kn. The current sets 002°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 060°T, 1.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.1 kn. The current sets 285°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 023°T, 2.8 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.7 kn. The current sets 261°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 323°T, 1.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 115°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 350°T, 2.0 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 11.5 kn. The current sets 068°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 041°T, 1.3 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 5.8 kn. The current sets 332°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 100 °T Speed over the ground: 6.7 kn Time to the mark: 63 min | No. 579001 (worked solution) |
| 2 | Course to steer: 256 °T Speed over the ground: 3.1 kn Time to the mark: 124 min | No. 579002 (worked solution) |
| 3 | Course to steer: 162 °T Speed over the ground: 6.0 kn Time to the mark: 29 min | No. 579003 (worked solution) |
| 4 | Course to steer: 260 °T Speed over the ground: 13.1 kn Time to the mark: 27 min | No. 579004 (worked solution) |
| 5 | Course to steer: 115 °T Speed over the ground: 8.8 kn Time to the mark: 37 min | No. 579005 (worked solution) |
| 6 | Course to steer: 227 °T Speed over the ground: 4.9 kn Time to the mark: 62 min | No. 579006 (worked solution) |
| 7 | Course to steer: 094 °T Speed over the ground: 13.8 kn Time to the mark: 12 min | No. 579007 (worked solution) |
| 8 | Course to steer: 287 °T Speed over the ground: 7.1 kn Time to the mark: 54 min | No. 579008 (worked solution) |