Worksheet 90 · Skill 6
Course to steer
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You are at 060°T, 1.6 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.7 kn. The current sets 129°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 249°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.0 kn. The current sets 178°T at 0.7 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 312°T, 3.1 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.0 kn. The current sets 213°T at 2.0 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 237°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.9 kn. The current sets 035°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 359°T, 1.9 nm from Mill stack, bound for Red nun "2". Your speed through the water is 9.7 kn. The current sets 352°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 032°T, 4.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.0 kn. The current sets 285°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 335°T, 2.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.9 kn. The current sets 266°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 155°T, 1.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 253°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 073 °T Speed over the ground: 9.4 kn Time to the mark: 17 min | No. 90001 (worked solution) |
| 2 | Course to steer: 275 °T Speed over the ground: 5.0 kn Time to the mark: 54 min | No. 90002 (worked solution) |
| 3 | Course to steer: 080 °T Speed over the ground: 4.8 kn Time to the mark: 79 min | No. 90003 (worked solution) |
| 4 | Course to steer: 297 °T Speed over the ground: 7.8 kn Time to the mark: 22 min | No. 90004 (worked solution) |
| 5 | Course to steer: 323 °T Speed over the ground: 11.3 kn Time to the mark: 11 min | No. 90005 (worked solution) |
| 6 | Course to steer: 152 °T Speed over the ground: 7.6 kn Time to the mark: 46 min | No. 90006 (worked solution) |
| 7 | Course to steer: 199 °T Speed over the ground: 10.4 kn Time to the mark: 35 min | No. 90007 (worked solution) |
| 8 | Course to steer: 085 °T Speed over the ground: 3.8 kn Time to the mark: 59 min | No. 90008 (worked solution) |