Worksheet 178 · Skill 6
Course to steer
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You are at 257°T, 0.8 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.1 kn. The current sets 169°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 001°T, 2.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.9 kn. The current sets 036°T at 2.1 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 273°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.6 kn. The current sets 202°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 252°T, 2.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.5 kn. The current sets 270°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 288°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.3 kn. The current sets 335°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
You are at 344°T, 1.5 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.1 kn. The current sets 191°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 050°T, 3.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.2 kn. The current sets 071°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 017°T, 3.7 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.5 kn. The current sets 105°T at 2.1 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: 028 °T Speed over the ground: 4.4 kn Time to the mark: 68 min | No. 178001 (worked solution) |
| 2 | Course to steer: 143 °T Speed over the ground: 9.5 kn Time to the mark: 36 min | No. 178002 (worked solution) |
| 3 | Course to steer: 275 °T Speed over the ground: 9.5 kn Time to the mark: 28 min | No. 178003 (worked solution) |
| 4 | Course to steer: 332 °T Speed over the ground: 8.2 kn Time to the mark: 15 min | No. 178004 (worked solution) |
| 5 | Course to steer: 253 °T Speed over the ground: 11.6 kn Time to the mark: 17 min | No. 178005 (worked solution) |
| 6 | Course to steer: 218 °T Speed over the ground: 12.1 kn Time to the mark: 23 min | No. 178006 (worked solution) |
| 7 | Course to steer: 165 °T Speed over the ground: 8.3 kn Time to the mark: 28 min | No. 178007 (worked solution) |
| 8 | Course to steer: 159 °T Speed over the ground: 7.9 kn Time to the mark: 45 min | No. 178008 (worked solution) |