Worksheet 493 · Skill 6
Course to steer
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You are at 040°T, 2.1 nm from Mill stack, bound for Red nun "2". Your speed through the water is 6.6 kn. The current sets 297°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 300°T, 2.7 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.7 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 289°T, 3.6 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 12.0 kn. The current sets 015°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 092°T, 1.2 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 11.8 kn. The current sets 005°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 025°T, 3.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.6 kn. The current sets 075°T at 1.9 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 131°T, 3.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.2 kn. The current sets 232°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
You are at 127°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.7 kn. The current sets 316°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 109°T, 1.9 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.6 kn. The current sets 155°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 313 °T Speed over the ground: 8.6 kn Time to the mark: 23 min | No. 493001 (worked solution) |
| 2 | Course to steer: 189 °T Speed over the ground: 11.5 kn Time to the mark: 24 min | No. 493002 (worked solution) |
| 3 | Course to steer: 155 °T Speed over the ground: 10.7 kn Time to the mark: 18 min | No. 493003 (worked solution) |
| 4 | Course to steer: 034 °T Speed over the ground: 13.4 kn Time to the mark: 11 min | No. 493004 (worked solution) |
| 5 | Course to steer: 136 °T Speed over the ground: 12.6 kn Time to the mark: 26 min | No. 493005 (worked solution) |
| 6 | Course to steer: 033 °T Speed over the ground: 5.9 kn Time to the mark: 38 min | No. 493006 (worked solution) |
| 7 | Course to steer: 274 °T Speed over the ground: 9.7 kn Time to the mark: 39 min | No. 493007 (worked solution) |
| 8 | Course to steer: 000 °T Speed over the ground: 9.0 kn Time to the mark: 30 min | No. 493008 (worked solution) |