Worksheet 141 · Skill 6
Course to steer
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You are at 016°T, 1.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.7 kn. The current sets 192°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 039°T, 4.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.1 kn. The current sets 025°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 032°T, 3.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.9 kn. The current sets 100°T at 1.0 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 303°T, 3.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.4 kn. The current sets 075°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
You are at 319°T, 1.9 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.8 kn. The current sets 044°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
You are at 161°T, 1.5 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.8 kn. The current sets 156°T at 1.0 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 124°T, 1.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.2 kn. The current sets 088°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 197°T, 1.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.1 kn. The current sets 008°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 125 °T Speed over the ground: 12.6 kn Time to the mark: 22 min | No. 141001 (worked solution) |
| 2 | Course to steer: 152 °T Speed over the ground: 9.2 kn Time to the mark: 31 min | No. 141002 (worked solution) |
| 3 | Course to steer: 251 °T Speed over the ground: 8.0 kn Time to the mark: 52 min | No. 141003 (worked solution) |
| 4 | Course to steer: 190 °T Speed over the ground: 10.2 kn Time to the mark: 30 min | No. 141004 (worked solution) |
| 5 | Course to steer: 096 °T Speed over the ground: 6.2 kn Time to the mark: 51 min | No. 141005 (worked solution) |
| 6 | Course to steer: 261 °T Speed over the ground: 6.6 kn Time to the mark: 33 min | No. 141006 (worked solution) |
| 7 | Course to steer: 123 °T Speed over the ground: 9.2 kn Time to the mark: 17 min | No. 141007 (worked solution) |
| 8 | Course to steer: 273 °T Speed over the ground: 9.2 kn Time to the mark: 30 min | No. 141008 (worked solution) |