Worksheet 77 · Skill 6
Course to steer
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You are at 043°T, 2.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.8 kn. The current sets 310°T at 1.6 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 109°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.3 kn. The current sets 330°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 332°T, 0.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.3 kn. The current sets 104°T at 1.6 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 130°T, 1.0 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.5 kn. The current sets 171°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
You are at 343°T, 2.4 nm from Mill stack, bound for Green can "3". Your speed through the water is 10.0 kn. The current sets 300°T at 1.0 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 139°T, 2.5 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.9 kn. The current sets 005°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 287°T, 4.1 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 6.8 kn. The current sets 023°T at 0.6 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, 1.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.1 kn. The current sets 188°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 245 °T Speed over the ground: 8.6 kn Time to the mark: 47 min | No. 77001 (worked solution) |
| 2 | Course to steer: 259 °T Speed over the ground: 12.3 kn Time to the mark: 34 min | No. 77002 (worked solution) |
| 3 | Course to steer: 267 °T Speed over the ground: 3.8 kn Time to the mark: 70 min | No. 77003 (worked solution) |
| 4 | Course to steer: 110 °T Speed over the ground: 6.9 kn Time to the mark: 28 min | No. 77004 (worked solution) |
| 5 | Course to steer: 025 °T Speed over the ground: 10.1 kn Time to the mark: 14 min | No. 77005 (worked solution) |
| 6 | Course to steer: 253 °T Speed over the ground: 6.5 kn Time to the mark: 43 min | No. 77006 (worked solution) |
| 7 | Course to steer: 146 °T Speed over the ground: 6.5 kn Time to the mark: 33 min | No. 77007 (worked solution) |
| 8 | Course to steer: 080 °T Speed over the ground: 4.9 kn Time to the mark: 62 min | No. 77008 (worked solution) |