Worksheet 539 · Skill 6
Course to steer
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You are at 309°T, 1.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 10.5 kn. The current sets 345°T at 1.4 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 315°T, 1.5 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 11.4 kn. The current sets 105°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 335°T, 2.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.6 kn. The current sets 304°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 307°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.6 kn. The current sets 102°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 349°T, 1.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.8 kn. The current sets 111°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 059°T, 1.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.2 kn. The current sets 173°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 230°T, 2.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.3 kn. The current sets 120°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 025°T, 2.4 nm from Mill stack, bound for Red nun "2". Your speed through the water is 12.0 kn. The current sets 064°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 190 °T Speed over the ground: 9.3 kn Time to the mark: 17 min | No. 539001 (worked solution) |
| 2 | Course to steer: 013 °T Speed over the ground: 11.4 kn Time to the mark: 32 min | No. 539002 (worked solution) |
| 3 | Course to steer: 106 °T Speed over the ground: 6.5 kn Time to the mark: 47 min | No. 539003 (worked solution) |
| 4 | Course to steer: 254 °T Speed over the ground: 5.1 kn Time to the mark: 53 min | No. 539004 (worked solution) |
| 5 | Course to steer: 264 °T Speed over the ground: 9.8 kn Time to the mark: 29 min | No. 539005 (worked solution) |
| 6 | Course to steer: 092 °T Speed over the ground: 9.8 kn Time to the mark: 28 min | No. 539006 (worked solution) |
| 7 | Course to steer: 032 °T Speed over the ground: 11.4 kn Time to the mark: 34 min | No. 539007 (worked solution) |
| 8 | Course to steer: 301 °T Speed over the ground: 11.6 kn Time to the mark: 14 min | No. 539008 (worked solution) |