Worksheet 78 · Skill 6
Course to steer
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You are at 019°T, 2.8 nm from Mill stack, bound for Bell buoy "HS". Your speed through the water is 6.0 kn. The current sets 088°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 040°T, 1.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.3 kn. The current sets 106°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 302°T, 4.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.4 kn. The current sets 095°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 038°T, 2.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.8 kn. The current sets 016°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 039°T, 2.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.6 kn. The current sets 027°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 271°T, 3.0 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 7.9 kn. The current sets 359°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 315°T, 1.7 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 7.0 kn. The current sets 181°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 279°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.2 kn. The current sets 244°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 039 °T Speed over the ground: 6.6 kn Time to the mark: 62 min | No. 78001 (worked solution) |
| 2 | Course to steer: 144 °T Speed over the ground: 10.9 kn Time to the mark: 23 min | No. 78002 (worked solution) |
| 3 | Course to steer: 157 °T Speed over the ground: 12.0 kn Time to the mark: 22 min | No. 78003 (worked solution) |
| 4 | Course to steer: 247 °T Speed over the ground: 10.0 kn Time to the mark: 39 min | No. 78004 (worked solution) |
| 5 | Course to steer: 147 °T Speed over the ground: 6.2 kn Time to the mark: 42 min | No. 78005 (worked solution) |
| 6 | Course to steer: 151 °T Speed over the ground: 6.1 kn Time to the mark: 21 min | No. 78006 (worked solution) |
| 7 | Course to steer: 318 °T Speed over the ground: 5.8 kn Time to the mark: 47 min | No. 78007 (worked solution) |
| 8 | Course to steer: 270 °T Speed over the ground: 10.1 kn Time to the mark: 19 min | No. 78008 (worked solution) |