Worksheet 120 · Skill 6
Course to steer
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You are at 013°T, 1.6 nm from Mill stack, bound for Green can "1". Your speed through the water is 7.8 kn. The current sets 347°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 316°T, 3.2 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.0 kn. The current sets 147°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 027°T, 3.7 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.5 kn. The current sets 146°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 206°T, 2.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.6 kn. The current sets 099°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 296°T, 1.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.7 kn. The current sets 183°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 025°T, 3.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.0 kn. The current sets 256°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 282°T, 3.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.3 kn. The current sets 025°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 359°T, 1.1 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 10.5 kn. The current sets 042°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 297 °T Speed over the ground: 9.1 kn Time to the mark: 18 min | No. 120001 (worked solution) |
| 2 | Course to steer: 095 °T Speed over the ground: 8.5 kn Time to the mark: 44 min | No. 120002 (worked solution) |
| 3 | Course to steer: 162 °T Speed over the ground: 11.6 kn Time to the mark: 29 min | No. 120003 (worked solution) |
| 4 | Course to steer: 260 °T Speed over the ground: 4.2 kn Time to the mark: 37 min | No. 120004 (worked solution) |
| 5 | Course to steer: 272 °T Speed over the ground: 10.0 kn Time to the mark: 21 min | No. 120005 (worked solution) |
| 6 | Course to steer: 124 °T Speed over the ground: 6.6 kn Time to the mark: 50 min | No. 120006 (worked solution) |
| 7 | Course to steer: 154 °T Speed over the ground: 8.3 kn Time to the mark: 20 min | No. 120007 (worked solution) |
| 8 | Course to steer: 073 °T Speed over the ground: 11.7 kn Time to the mark: 13 min | No. 120008 (worked solution) |