Worksheet 181 · Skill 6
Course to steer
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You are at 180°T, 1.5 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.4 kn. The current sets 203°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 027°T, 3.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.7 kn. The current sets 186°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 331°T, 1.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.2 kn. The current sets 136°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 301°T, 3.2 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.7 kn. The current sets 137°T at 0.5 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 126°T, 1.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.1 kn. The current sets 153°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 290°T, 4.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.4 kn. The current sets 296°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 020°T, 1.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.4 kn. The current sets 144°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 197°T, 1.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.9 kn. The current sets 222°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 051 °T Speed over the ground: 6.6 kn Time to the mark: 44 min | No. 181001 (worked solution) |
| 2 | Course to steer: 128 °T Speed over the ground: 8.3 kn Time to the mark: 39 min | No. 181002 (worked solution) |
| 3 | Course to steer: 223 °T Speed over the ground: 10.6 kn Time to the mark: 25 min | No. 181003 (worked solution) |
| 4 | Course to steer: 089 °T Speed over the ground: 6.0 kn Time to the mark: 67 min | No. 181004 (worked solution) |
| 5 | Course to steer: 008 °T Speed over the ground: 6.9 kn Time to the mark: 40 min | No. 181005 (worked solution) |
| 6 | Course to steer: 168 °T Speed over the ground: 10.4 kn Time to the mark: 26 min | No. 181006 (worked solution) |
| 7 | Course to steer: 267 °T Speed over the ground: 7.8 kn Time to the mark: 41 min | No. 181007 (worked solution) |
| 8 | Course to steer: 251 °T Speed over the ground: 7.0 kn Time to the mark: 24 min | No. 181008 (worked solution) |