Worksheet 123 · Skill 6
Course to steer
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You are at 114°T, 1.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.0 kn. The current sets 157°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 340°T, 1.5 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 6.2 kn. The current sets 268°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 309°T, 3.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.0 kn. The current sets 102°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 010°T, 3.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.5 kn. The current sets 120°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 038°T, 2.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.8 kn. The current sets 066°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 328°T, 2.1 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.4 kn. The current sets 125°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 358°T, 1.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.2 kn. The current sets 131°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 191°T, 2.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 10.0 kn. The current sets 267°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 263 °T Speed over the ground: 4.8 kn Time to the mark: 69 min | No. 123001 (worked solution) |
| 2 | Course to steer: 309 °T Speed over the ground: 7.8 kn Time to the mark: 39 min | No. 123002 (worked solution) |
| 3 | Course to steer: 193 °T Speed over the ground: 11.2 kn Time to the mark: 26 min | No. 123003 (worked solution) |
| 4 | Course to steer: 145 °T Speed over the ground: 7.9 kn Time to the mark: 45 min | No. 123004 (worked solution) |
| 5 | Course to steer: 169 °T Speed over the ground: 5.8 kn Time to the mark: 47 min | No. 123005 (worked solution) |
| 6 | Course to steer: 213 °T Speed over the ground: 6.5 kn Time to the mark: 43 min | No. 123006 (worked solution) |
| 7 | Course to steer: 265 °T Speed over the ground: 7.1 kn Time to the mark: 41 min | No. 123007 (worked solution) |
| 8 | Course to steer: 058 °T Speed over the ground: 8.7 kn Time to the mark: 38 min | No. 123008 (worked solution) |