Worksheet 689 · Skill 6
Course to steer
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You are at 137°T, 1.5 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.7 kn. The current sets 038°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, 3.7 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.2 kn. The current sets 130°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 113°T, 1.5 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.9 kn. The current sets 325°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 303°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 9.7 kn. The current sets 194°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 352°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.8 kn. The current sets 277°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 044°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.6 kn. The current sets 126°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 317°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.5 kn. The current sets 014°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 085°T, 1.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.0 kn. The current sets 141°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: 244 °T Speed over the ground: 6.1 kn Time to the mark: 42 min | No. 689001 (worked solution) |
| 2 | Course to steer: 160 °T Speed over the ground: 9.8 kn Time to the mark: 38 min | No. 689002 (worked solution) |
| 3 | Course to steer: 125 °T Speed over the ground: 10.2 kn Time to the mark: 16 min | No. 689003 (worked solution) |
| 4 | Course to steer: 264 °T Speed over the ground: 10.6 kn Time to the mark: 25 min | No. 689004 (worked solution) |
| 5 | Course to steer: 241 °T Speed over the ground: 8.8 kn Time to the mark: 33 min | No. 689005 (worked solution) |
| 6 | Course to steer: 264 °T Speed over the ground: 7.8 kn Time to the mark: 48 min | No. 689006 (worked solution) |
| 7 | Course to steer: 242 °T Speed over the ground: 6.7 kn Time to the mark: 42 min | No. 689007 (worked solution) |
| 8 | Course to steer: 093 °T Speed over the ground: 10.1 kn Time to the mark: 24 min | No. 689008 (worked solution) |