Worksheet 175 · Skill 6
Course to steer
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You are at 007°T, 1.9 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 9.2 kn. The current sets 155°T at 1.8 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 158°T, 2.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.9 kn. The current sets 048°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 347°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.9 kn. The current sets 093°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 261°T, 1.7 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 9.8 kn. The current sets 345°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 049°T, 1.9 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 10.9 kn. The current sets 131°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 305°T, 1.7 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 8.2 kn. The current sets 216°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 286°T, 3.2 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.7 kn. The current sets 056°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 109°T, 1.0 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.2 kn. The current sets 177°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 077 °T Speed over the ground: 9.7 kn Time to the mark: 13 min | No. 175001 (worked solution) |
| 2 | Course to steer: 257 °T Speed over the ground: 8.2 kn Time to the mark: 34 min | No. 175002 (worked solution) |
| 3 | Course to steer: 220 °T Speed over the ground: 11.0 kn Time to the mark: 32 min | No. 175003 (worked solution) |
| 4 | Course to steer: 050 °T Speed over the ground: 10.4 kn Time to the mark: 33 min | No. 175004 (worked solution) |
| 5 | Course to steer: 042 °T Speed over the ground: 11.2 kn Time to the mark: 15 min | No. 175005 (worked solution) |
| 6 | Course to steer: 299 °T Speed over the ground: 8.4 kn Time to the mark: 37 min | No. 175006 (worked solution) |
| 7 | Course to steer: 094 °T Speed over the ground: 10.4 kn Time to the mark: 41 min | No. 175007 (worked solution) |
| 8 | Course to steer: 087 °T Speed over the ground: 10.2 kn Time to the mark: 27 min | No. 175008 (worked solution) |