Worksheet 485 · Skill 6
Course to steer
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You are at 046°T, 1.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.1 kn. The current sets 335°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 043°T, 2.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.7 kn. The current sets 257°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 318°T, 1.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.6 kn. The current sets 105°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 219°T, 1.9 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 003°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 260°T, 1.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.3 kn. The current sets 180°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 029°T, 1.3 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 9.0 kn. The current sets 003°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 323°T, 3.1 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 6.0 kn. The current sets 126°T at 2.3 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 203°T, 1.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.5 kn. The current sets 005°T at 2.0 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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 249 °T Speed over the ground: 8.3 kn Time to the mark: 46 min | No. 485001 (worked solution) |
| 2 | Course to steer: 129 °T Speed over the ground: 8.5 kn Time to the mark: 29 min | No. 485002 (worked solution) |
| 3 | Course to steer: 222 °T Speed over the ground: 6.2 kn Time to the mark: 48 min | No. 485003 (worked solution) |
| 4 | Course to steer: 226 °T Speed over the ground: 4.5 kn Time to the mark: 28 min | No. 485004 (worked solution) |
| 5 | Course to steer: 217 °T Speed over the ground: 7.0 kn Time to the mark: 22 min | No. 485005 (worked solution) |
| 6 | Course to steer: 072 °T Speed over the ground: 10.0 kn Time to the mark: 21 min | No. 485006 (worked solution) |
| 7 | Course to steer: 288 °T Speed over the ground: 3.9 kn Time to the mark: 67 min | No. 485007 (worked solution) |
| 8 | Course to steer: 225 °T Speed over the ground: 4.2 kn Time to the mark: 46 min | No. 485008 (worked solution) |