Worksheet 171 · Skill 6
Course to steer
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You are at 100°T, 1.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.3 kn. The current sets 198°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 017°T, 0.8 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 10.8 kn. The current sets 068°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 103°T, 1.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.4 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
You are at 292°T, 2.8 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.3 kn. The current sets 321°T at 0.8 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 043°T, 3.1 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.8 kn. The current sets 066°T at 1.5 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 060°T, 1.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.0 kn. The current sets 067°T at 1.5 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 305°T, 4.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.7 kn. The current sets 245°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 042°T, 4.0 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.1 kn. The current sets 255°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 086 °T Speed over the ground: 7.9 kn Time to the mark: 30 min | No. 171001 (worked solution) |
| 2 | Course to steer: 296 °T Speed over the ground: 10.0 kn Time to the mark: 36 min | No. 171002 (worked solution) |
| 3 | Course to steer: 133 °T Speed over the ground: 5.8 kn Time to the mark: 28 min | No. 171003 (worked solution) |
| 4 | Course to steer: 092 °T Speed over the ground: 7.8 kn Time to the mark: 51 min | No. 171004 (worked solution) |
| 5 | Course to steer: 136 °T Speed over the ground: 11.4 kn Time to the mark: 23 min | No. 171005 (worked solution) |
| 6 | Course to steer: 130 °T Speed over the ground: 10.8 kn Time to the mark: 21 min | No. 171006 (worked solution) |
| 7 | Course to steer: 163 °T Speed over the ground: 6.0 kn Time to the mark: 50 min | No. 171007 (worked solution) |
| 8 | Course to steer: 150 °T Speed over the ground: 8.8 kn Time to the mark: 32 min | No. 171008 (worked solution) |