Worksheet 747 · Skill 6
Course to steer
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You are at 201°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.8 kn. The current sets 094°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 012°T, 1.3 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 7.5 kn. The current sets 262°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 188°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.5 kn. The current sets 310°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 342°T, 1.6 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 8.4 kn. The current sets 167°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 062°T, 2.7 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 5.0 kn. The current sets 331°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 145°T, 0.8 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.6 kn. The current sets 118°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 312°T, 2.9 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 6.6 kn. The current sets 326°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 269°T, 3.1 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.4 kn. The current sets 278°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 258 °T Speed over the ground: 5.6 kn Time to the mark: 30 min | No. 747001 (worked solution) |
| 2 | Course to steer: 044 °T Speed over the ground: 6.5 kn Time to the mark: 29 min | No. 747002 (worked solution) |
| 3 | Course to steer: 239 °T Speed over the ground: 6.8 kn Time to the mark: 32 min | No. 747003 (worked solution) |
| 4 | Course to steer: 056 °T Speed over the ground: 7.9 kn Time to the mark: 34 min | No. 747004 (worked solution) |
| 5 | Course to steer: 066 °T Speed over the ground: 5.4 kn Time to the mark: 23 min | No. 747005 (worked solution) |
| 6 | Course to steer: 278 °T Speed over the ground: 5.8 kn Time to the mark: 61 min | No. 747006 (worked solution) |
| 7 | Course to steer: 167 °T Speed over the ground: 5.2 kn Time to the mark: 41 min | No. 747007 (worked solution) |
| 8 | Course to steer: 151 °T Speed over the ground: 4.4 kn Time to the mark: 34 min | No. 747008 (worked solution) |