Worksheet 497 · Skill 6
Course to steer
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You are at 158°T, 2.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.9 kn. The current sets 027°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 271°T, 3.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.6 kn. The current sets 296°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 339°T, 2.3 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 10.9 kn. The current sets 191°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 124°T, 1.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.1 kn. The current sets 358°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 021°T, 2.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.4 kn. The current sets 242°T at 2.5 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
You are at 024°T, 2.6 nm from Mill stack, bound for Bell buoy "HS". Your speed through the water is 10.2 kn. The current sets 274°T at 1.6 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, 1.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.5 kn. The current sets 356°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 114°T, 1.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.9 kn. The current sets 052°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 250 °T Speed over the ground: 6.5 kn Time to the mark: 43 min | No. 497001 (worked solution) |
| 2 | Course to steer: 159 °T Speed over the ground: 4.5 kn Time to the mark: 34 min | No. 497002 (worked solution) |
| 3 | Course to steer: 090 °T Speed over the ground: 10.7 kn Time to the mark: 27 min | No. 497003 (worked solution) |
| 4 | Course to steer: 264 °T Speed over the ground: 8.2 kn Time to the mark: 44 min | No. 497004 (worked solution) |
| 5 | Course to steer: 124 °T Speed over the ground: 10.5 kn Time to the mark: 29 min | No. 497005 (worked solution) |
| 6 | Course to steer: 050 °T Speed over the ground: 9.1 kn Time to the mark: 46 min | No. 497006 (worked solution) |
| 7 | Course to steer: 129 °T Speed over the ground: 8.0 kn Time to the mark: 36 min | No. 497007 (worked solution) |
| 8 | Course to steer: 134 °T Speed over the ground: 8.4 kn Time to the mark: 19 min | No. 497008 (worked solution) |