Worksheet 639 · Skill 6
Course to steer
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You are at 295°T, 2.1 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.9 kn. The current sets 346°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 039°T, 2.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.4 kn. The current sets 226°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 349°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.3 kn. The current sets 304°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 015°T, 0.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.0 kn. The current sets 097°T at 1.7 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 324°T, 1.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.7 kn. The current sets 279°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 090°T, 2.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.1 kn. The current sets 258°T at 1.7 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 178°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.9 kn. The current sets 298°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 344°T, 1.4 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 7.0 kn. The current sets 089°T at 1.5 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: 092 °T Speed over the ground: 9.6 kn Time to the mark: 37 min | No. 639001 (worked solution) |
| 2 | Course to steer: 097 °T Speed over the ground: 8.8 kn Time to the mark: 18 min | No. 639002 (worked solution) |
| 3 | Course to steer: 202 °T Speed over the ground: 6.2 kn Time to the mark: 62 min | No. 639003 (worked solution) |
| 4 | Course to steer: 260 °T Speed over the ground: 6.4 kn Time to the mark: 55 min | No. 639004 (worked solution) |
| 5 | Course to steer: 189 °T Speed over the ground: 6.2 kn Time to the mark: 41 min | No. 639005 (worked solution) |
| 6 | Course to steer: 134 °T Speed over the ground: 7.3 kn Time to the mark: 20 min | No. 639006 (worked solution) |
| 7 | Course to steer: 268 °T Speed over the ground: 7.5 kn Time to the mark: 44 min | No. 639007 (worked solution) |
| 8 | Course to steer: 293 °T Speed over the ground: 5.7 kn Time to the mark: 55 min | No. 639008 (worked solution) |