Worksheet 475 · Skill 6
Course to steer
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You are at 140°T, 1.6 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.1 kn. The current sets 229°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 140°T, 1.5 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.5 kn. The current sets 332°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 355°T, 2.3 nm from Mill stack, bound for Green can "3". Your speed through the water is 9.9 kn. The current sets 254°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 019°T, 1.7 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.2 kn. The current sets 080°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 048°T, 3.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.3 kn. The current sets 309°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 116°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.2 kn. The current sets 282°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 233°T, 2.3 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.7 kn. The current sets 018°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 024°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 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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 019 °T Speed over the ground: 9.6 kn Time to the mark: 32 min | No. 475001 (worked solution) |
| 2 | Course to steer: 024 °T Speed over the ground: 9.9 kn Time to the mark: 31 min | No. 475002 (worked solution) |
| 3 | Course to steer: 014 °T Speed over the ground: 9.3 kn Time to the mark: 15 min | No. 475003 (worked solution) |
| 4 | Course to steer: 136 °T Speed over the ground: 12.3 kn Time to the mark: 23 min | No. 475004 (worked solution) |
| 5 | Course to steer: 149 °T Speed over the ground: 4.4 kn Time to the mark: 56 min | No. 475005 (worked solution) |
| 6 | Course to steer: 240 °T Speed over the ground: 7.9 kn Time to the mark: 42 min | No. 475006 (worked solution) |
| 7 | Course to steer: 268 °T Speed over the ground: 8.2 kn Time to the mark: 27 min | No. 475007 (worked solution) |
| 8 | Course to steer: 234 °T Speed over the ground: 8.6 kn Time to the mark: 50 min | No. 475008 (worked solution) |