Worksheet 18 · Skill 6
Course to steer
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You are at 049°T, 2.8 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.7 kn. The current sets 172°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 040°T, 2.3 nm from Mill stack, bound for Bell buoy "HS". Your speed through the water is 7.5 kn. The current sets 249°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 207°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.7 kn. The current sets 011°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 056°T, 2.7 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 8.9 kn. The current sets 292°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 036°T, 4.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.0 kn. The current sets 278°T at 2.4 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 314°T, 3.6 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.2 kn. The current sets 207°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 238°T, 2.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.7 kn. The current sets 073°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 328°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.6 kn. The current sets 274°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 270 °T Speed over the ground: 8.7 kn Time to the mark: 49 min | No. 18001 (worked solution) |
| 2 | Course to steer: 041 °T Speed over the ground: 6.7 kn Time to the mark: 64 min | No. 18002 (worked solution) |
| 3 | Course to steer: 237 °T Speed over the ground: 6.1 kn Time to the mark: 30 min | No. 18003 (worked solution) |
| 4 | Course to steer: 051 °T Speed over the ground: 8.5 kn Time to the mark: 14 min | No. 18004 (worked solution) |
| 5 | Course to steer: 145 °T Speed over the ground: 7.6 kn Time to the mark: 40 min | No. 18005 (worked solution) |
| 6 | Course to steer: 159 °T Speed over the ground: 10.9 kn Time to the mark: 23 min | No. 18006 (worked solution) |
| 7 | Course to steer: 292 °T Speed over the ground: 7.9 kn Time to the mark: 23 min | No. 18007 (worked solution) |
| 8 | Course to steer: 205 °T Speed over the ground: 7.0 kn Time to the mark: 45 min | No. 18008 (worked solution) |