Worksheet 180 · Skill 6
Course to steer
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You are at 085°T, 1.0 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.6 kn. The current sets 354°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 044°T, 1.3 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 5.7 kn. The current sets 044°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 191°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.1 kn. The current sets 108°T at 2.4 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 031°T, 2.4 nm from Mill stack, bound for Red nun "2". Your speed through the water is 10.1 kn. The current sets 190°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 027°T, 1.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 6.6 kn. The current sets 085°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 353°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 9.7 kn. The current sets 313°T at 2.4 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 103°T, 2.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.0 kn. The current sets 184°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 171°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.8 kn. The current sets 250°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 139 °T Speed over the ground: 4.5 kn Time to the mark: 46 min | No. 180001 (worked solution) |
| 2 | Course to steer: 058 °T Speed over the ground: 7.3 kn Time to the mark: 28 min | No. 180002 (worked solution) |
| 3 | Course to steer: 279 °T Speed over the ground: 4.7 kn Time to the mark: 66 min | No. 180003 (worked solution) |
| 4 | Course to steer: 308 °T Speed over the ground: 9.7 kn Time to the mark: 18 min | No. 180004 (worked solution) |
| 5 | Course to steer: 025 °T Speed over the ground: 7.1 kn Time to the mark: 27 min | No. 180005 (worked solution) |
| 6 | Course to steer: 059 °T Speed over the ground: 9.3 kn Time to the mark: 22 min | No. 180006 (worked solution) |
| 7 | Course to steer: 287 °T Speed over the ground: 5.9 kn Time to the mark: 75 min | No. 180007 (worked solution) |
| 8 | Course to steer: 287 °T Speed over the ground: 7.1 kn Time to the mark: 48 min | No. 180008 (worked solution) |