Worksheet 231 · Skill 6
Course to steer
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You are at 052°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.8 kn. The current sets 010°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 032°T, 2.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.6 kn. The current sets 116°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 204°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.7 kn. The current sets 233°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 196°T, 2.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.1 kn. The current sets 336°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 247°T, 2.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.2 kn. The current sets 257°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 075°T, 3.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.0 kn. The current sets 249°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 266°T, 1.8 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 9.4 kn. The current sets 335°T at 0.6 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 140°T, 3.6 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.0 kn. The current sets 340°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: 259 °T Speed over the ground: 5.5 kn Time to the mark: 52 min | No. 231001 (worked solution) |
| 2 | Course to steer: 268 °T Speed over the ground: 3.8 kn Time to the mark: 100 min | No. 231002 (worked solution) |
| 3 | Course to steer: 290 °T Speed over the ground: 7.8 kn Time to the mark: 37 min | No. 231003 (worked solution) |
| 4 | Course to steer: 248 °T Speed over the ground: 11.2 kn Time to the mark: 17 min | No. 231004 (worked solution) |
| 5 | Course to steer: 281 °T Speed over the ground: 8.5 kn Time to the mark: 22 min | No. 231005 (worked solution) |
| 6 | Course to steer: 137 °T Speed over the ground: 6.6 kn Time to the mark: 23 min | No. 231006 (worked solution) |
| 7 | Course to steer: 259 °T Speed over the ground: 9.6 kn Time to the mark: 23 min | No. 231007 (worked solution) |
| 8 | Course to steer: 067 °T Speed over the ground: 6.2 kn Time to the mark: 23 min | No. 231008 (worked solution) |