Worksheet 645 · Skill 6
Course to steer
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You are at 308°T, 1.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.4 kn. The current sets 321°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
You are at 354°T, 1.1 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 11.0 kn. The current sets 192°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
You are at 262°T, 2.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.4 kn. The current sets 036°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 040°T, 3.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.4 kn. The current sets 257°T at 0.7 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 250°T, 3.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.8 kn. The current sets 099°T at 0.7 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 053°T, 3.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.8 kn. The current sets 284°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 217°T, 1.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.6 kn. The current sets 192°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 017°T, 2.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.3 kn. The current sets 050°T at 0.6 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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 194 °T Speed over the ground: 4.7 kn Time to the mark: 50 min | No. 645001 (worked solution) |
| 2 | Course to steer: 310 °T Speed over the ground: 10.2 kn Time to the mark: 33 min | No. 645002 (worked solution) |
| 3 | Course to steer: 259 °T Speed over the ground: 5.8 kn Time to the mark: 34 min | No. 645003 (worked solution) |
| 4 | Course to steer: 124 °T Speed over the ground: 4.9 kn Time to the mark: 56 min | No. 645004 (worked solution) |
| 5 | Course to steer: 205 °T Speed over the ground: 8.6 kn Time to the mark: 15 min | No. 645005 (worked solution) |
| 6 | Course to steer: 126 °T Speed over the ground: 9.1 kn Time to the mark: 26 min | No. 645006 (worked solution) |
| 7 | Course to steer: 302 °T Speed over the ground: 6.2 kn Time to the mark: 40 min | No. 645007 (worked solution) |
| 8 | Course to steer: 136 °T Speed over the ground: 9.4 kn Time to the mark: 32 min | No. 645008 (worked solution) |