Worksheet 491 · Skill 6
Course to steer
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You are at 121°T, 1.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.1 kn. The current sets 169°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 028°T, 2.5 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.5 kn. The current sets 028°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 291°T, 3.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 8.0 kn. The current sets 047°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 147°T, 1.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.5 kn. The current sets 131°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 317°T, 2.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.2 kn. The current sets 217°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 091°T, 1.2 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 8.9 kn. The current sets 131°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 139°T, 2.5 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.7 kn. The current sets 167°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 334°T, 2.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.5 kn. The current sets 186°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: 282 °T Speed over the ground: 8.8 kn Time to the mark: 42 min | No. 491001 (worked solution) |
| 2 | Course to steer: 158 °T Speed over the ground: 6.7 kn Time to the mark: 44 min | No. 491002 (worked solution) |
| 3 | Course to steer: 165 °T Speed over the ground: 7.3 kn Time to the mark: 26 min | No. 491003 (worked solution) |
| 4 | Course to steer: 286 °T Speed over the ground: 9.2 kn Time to the mark: 37 min | No. 491004 (worked solution) |
| 5 | Course to steer: 087 °T Speed over the ground: 8.2 kn Time to the mark: 43 min | No. 491005 (worked solution) |
| 6 | Course to steer: 022 °T Speed over the ground: 8.6 kn Time to the mark: 16 min | No. 491006 (worked solution) |
| 7 | Course to steer: 280 °T Speed over the ground: 9.4 kn Time to the mark: 21 min | No. 491007 (worked solution) |
| 8 | Course to steer: 091 °T Speed over the ground: 9.5 kn Time to the mark: 32 min | No. 491008 (worked solution) |