Worksheet 686 · Skill 6
Course to steer
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You are at 327°T, 2.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 10.1 kn. The current sets 165°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 266°T, 2.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.0 kn. The current sets 164°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 048°T, 2.7 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.1 kn. The current sets 063°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 081°T, 0.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.5 kn. The current sets 069°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 066°T, 3.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.5 kn. The current sets 245°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 233°T, 1.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.5 kn. The current sets 303°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 008°T, 2.5 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.9 kn. The current sets 006°T at 1.3 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 232°T, 2.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.8 kn. The current sets 197°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 190 °T Speed over the ground: 11.8 kn Time to the mark: 18 min | No. 686001 (worked solution) |
| 2 | Course to steer: 202 °T Speed over the ground: 8.6 kn Time to the mark: 21 min | No. 686002 (worked solution) |
| 3 | Course to steer: 148 °T Speed over the ground: 10.2 kn Time to the mark: 23 min | No. 686003 (worked solution) |
| 4 | Course to steer: 146 °T Speed over the ground: 7.5 kn Time to the mark: 28 min | No. 686004 (worked solution) |
| 5 | Course to steer: 151 °T Speed over the ground: 7.5 kn Time to the mark: 24 min | No. 686005 (worked solution) |
| 6 | Course to steer: 214 °T Speed over the ground: 8.8 kn Time to the mark: 20 min | No. 686006 (worked solution) |
| 7 | Course to steer: 120 °T Speed over the ground: 5.5 kn Time to the mark: 42 min | No. 686007 (worked solution) |
| 8 | Course to steer: 301 °T Speed over the ground: 8.5 kn Time to the mark: 25 min | No. 686008 (worked solution) |