Worksheet 455 · Skill 6
Course to steer
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You are at 118°T, 2.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.3 kn. The current sets 131°T at 2.5 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 113°T, 1.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.8 kn. The current sets 073°T at 2.5 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 350°T, 1.7 nm from Heron Point Light, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 124°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 011°T, 3.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.8 kn. The current sets 268°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 073°T, 1.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.7 kn. The current sets 265°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 132°T, 3.1 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 10.1 kn. The current sets 184°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 300°T, 1.3 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 10.9 kn. The current sets 110°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 239°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.3 kn. The current sets 053°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 060 °T Speed over the ground: 6.5 kn Time to the mark: 33 min | No. 455001 (worked solution) |
| 2 | Course to steer: 111 °T Speed over the ground: 12.9 kn Time to the mark: 12 min | No. 455002 (worked solution) |
| 3 | Course to steer: 090 °T Speed over the ground: 6.6 kn Time to the mark: 19 min | No. 455003 (worked solution) |
| 4 | Course to steer: 117 °T Speed over the ground: 6.0 kn Time to the mark: 63 min | No. 455004 (worked solution) |
| 5 | Course to steer: 120 °T Speed over the ground: 9.9 kn Time to the mark: 19 min | No. 455005 (worked solution) |
| 6 | Course to steer: 282 °T Speed over the ground: 10.0 kn Time to the mark: 24 min | No. 455006 (worked solution) |
| 7 | Course to steer: 199 °T Speed over the ground: 11.0 kn Time to the mark: 13 min | No. 455007 (worked solution) |
| 8 | Course to steer: 292 °T Speed over the ground: 7.8 kn Time to the mark: 23 min | No. 455008 (worked solution) |