Worksheet 642 · Skill 6
Course to steer
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You are at 101°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.3 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 310°T, 2.3 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.7 kn. The current sets 310°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 062°T, 2.7 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 10.0 kn. The current sets 169°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 241°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.5 kn. The current sets 323°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 356°T, 1.8 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 5.8 kn. The current sets 345°T at 1.2 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 092°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.3 kn. The current sets 270°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 046°T, 2.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.0 kn. The current sets 074°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 356°T, 2.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.2 kn. The current sets 187°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: 252 °T Speed over the ground: 5.7 kn Time to the mark: 64 min | No. 642001 (worked solution) |
| 2 | Course to steer: 098 °T Speed over the ground: 9.9 kn Time to the mark: 35 min | No. 642002 (worked solution) |
| 3 | Course to steer: 030 °T Speed over the ground: 8.5 kn Time to the mark: 15 min | No. 642003 (worked solution) |
| 4 | Course to steer: 263 °T Speed over the ground: 6.1 kn Time to the mark: 41 min | No. 642004 (worked solution) |
| 5 | Course to steer: 086 °T Speed over the ground: 5.7 kn Time to the mark: 42 min | No. 642005 (worked solution) |
| 6 | Course to steer: 026 °T Speed over the ground: 4.9 kn Time to the mark: 48 min | No. 642006 (worked solution) |
| 7 | Course to steer: 149 °T Speed over the ground: 9.8 kn Time to the mark: 25 min | No. 642007 (worked solution) |
| 8 | Course to steer: 217 °T Speed over the ground: 7.0 kn Time to the mark: 54 min | No. 642008 (worked solution) |