Worksheet 637 · Skill 6
Course to steer
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You are at 153°T, 0.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 12.0 kn. The current sets 050°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 000°T, 1.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.8 kn. The current sets 343°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 024°T, 2.9 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 5.5 kn. The current sets 239°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 109°T, 1.1 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.3 kn. The current sets 107°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 228°T, 2.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 10.4 kn. The current sets 170°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 027°T, 2.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.7 kn. The current sets 118°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 177°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.6 kn. The current sets 278°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 311°T, 3.3 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 6.2 kn. The current sets 110°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: 107 °T Speed over the ground: 13.4 kn Time to the mark: 18 min | No. 637001 (worked solution) |
| 2 | Course to steer: 114 °T Speed over the ground: 8.1 kn Time to the mark: 44 min | No. 637002 (worked solution) |
| 3 | Course to steer: 079 °T Speed over the ground: 4.4 kn Time to the mark: 35 min | No. 637003 (worked solution) |
| 4 | Course to steer: 009 °T Speed over the ground: 8.2 kn Time to the mark: 31 min | No. 637004 (worked solution) |
| 5 | Course to steer: 296 °T Speed over the ground: 9.5 kn Time to the mark: 23 min | No. 637005 (worked solution) |
| 6 | Course to steer: 250 °T Speed over the ground: 7.2 kn Time to the mark: 61 min | No. 637006 (worked solution) |
| 7 | Course to steer: 030 °T Speed over the ground: 10.2 kn Time to the mark: 33 min | No. 637007 (worked solution) |
| 8 | Course to steer: 175 °T Speed over the ground: 6.6 kn Time to the mark: 35 min | No. 637008 (worked solution) |