Worksheet 161 · Skill 6
Course to steer
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You are at 288°T, 3.7 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.4 kn. The current sets 340°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 135°T, 1.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 043°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 343°T, 2.0 nm from Mill stack, bound for Green can "3". Your speed through the water is 6.4 kn. The current sets 087°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 318°T, 1.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 177°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 111°T, 1.3 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 7.6 kn. The current sets 114°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 328°T, 2.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.7 kn. The current sets 244°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 100°T, 2.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.2 kn. The current sets 051°T at 0.5 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 268°T, 1.6 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.1 kn. The current sets 011°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: 177 °T Speed over the ground: 6.8 kn Time to the mark: 37 min | No. 161001 (worked solution) |
| 2 | Course to steer: 267 °T Speed over the ground: 4.6 kn Time to the mark: 80 min | No. 161002 (worked solution) |
| 3 | Course to steer: 000 °T Speed over the ground: 6.7 kn Time to the mark: 25 min | No. 161003 (worked solution) |
| 4 | Course to steer: 230 °T Speed over the ground: 7.0 kn Time to the mark: 42 min | No. 161004 (worked solution) |
| 5 | Course to steer: 356 °T Speed over the ground: 6.8 kn Time to the mark: 39 min | No. 161005 (worked solution) |
| 6 | Course to steer: 196 °T Speed over the ground: 12.5 kn Time to the mark: 28 min | No. 161006 (worked solution) |
| 7 | Course to steer: 143 °T Speed over the ground: 9.2 kn Time to the mark: 14 min | No. 161007 (worked solution) |
| 8 | Course to steer: 055 °T Speed over the ground: 6.4 kn Time to the mark: 51 min | No. 161008 (worked solution) |