Worksheet 390 · Skill 6
Course to steer
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You are at 051°T, 1.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.2 kn. The current sets 123°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 074°T, 2.1 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.5 kn. The current sets 164°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 251°T, 2.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.0 kn. The current sets 319°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 155°T, 1.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 8.9 kn. The current sets 292°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 085°T, 0.9 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 9.0 kn. The current sets 139°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 036°T, 2.8 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 7.4 kn. The current sets 171°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 041°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.6 kn. The current sets 285°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 050°T, 2.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.9 kn. The current sets 308°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: 149 °T Speed over the ground: 12.8 kn Time to the mark: 18 min | No. 390001 (worked solution) |
| 2 | Course to steer: 062 °T Speed over the ground: 7.3 kn Time to the mark: 17 min | No. 390002 (worked solution) |
| 3 | Course to steer: 203 °T Speed over the ground: 9.3 kn Time to the mark: 18 min | No. 390003 (worked solution) |
| 4 | Course to steer: 242 °T Speed over the ground: 9.8 kn Time to the mark: 23 min | No. 390004 (worked solution) |
| 5 | Course to steer: 025 °T Speed over the ground: 8.4 kn Time to the mark: 17 min | No. 390005 (worked solution) |
| 6 | Course to steer: 059 °T Speed over the ground: 6.9 kn Time to the mark: 19 min | No. 390006 (worked solution) |
| 7 | Course to steer: 250 °T Speed over the ground: 6.3 kn Time to the mark: 65 min | No. 390007 (worked solution) |
| 8 | Course to steer: 152 °T Speed over the ground: 9.6 kn Time to the mark: 25 min | No. 390008 (worked solution) |