Worksheet 138 · Skill 6
Course to steer
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You are at 091°T, 1.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.9 kn. The current sets 110°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 053°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.4 kn. The current sets 115°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 017°T, 1.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.4 kn. The current sets 207°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 227°T, 2.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.1 kn. The current sets 058°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 033°T, 1.0 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 5.4 kn. The current sets 341°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 103°T, 2.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.0 kn. The current sets 109°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 321°T, 2.9 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.7 kn. The current sets 140°T at 1.1 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 176°T, 1.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.0 kn. The current sets 032°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 144 °T Speed over the ground: 7.1 kn Time to the mark: 23 min | No. 138001 (worked solution) |
| 2 | Course to steer: 279 °T Speed over the ground: 3.9 kn Time to the mark: 68 min | No. 138002 (worked solution) |
| 3 | Course to steer: 075 °T Speed over the ground: 4.3 kn Time to the mark: 49 min | No. 138003 (worked solution) |
| 4 | Course to steer: 313 °T Speed over the ground: 10.8 kn Time to the mark: 17 min | No. 138004 (worked solution) |
| 5 | Course to steer: 084 °T Speed over the ground: 5.4 kn Time to the mark: 24 min | No. 138005 (worked solution) |
| 6 | Course to steer: 085 °T Speed over the ground: 8.2 kn Time to the mark: 22 min | No. 138006 (worked solution) |
| 7 | Course to steer: 181 °T Speed over the ground: 12.5 kn Time to the mark: 18 min | No. 138007 (worked solution) |
| 8 | Course to steer: 238 °T Speed over the ground: 7.3 kn Time to the mark: 34 min | No. 138008 (worked solution) |