Worksheet 91 · Skill 6
Course to steer
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You are at 267°T, 3.3 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.2 kn. The current sets 198°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 183°T, 0.8 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.5 kn. The current sets 177°T at 0.7 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 039°T, 1.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 6.7 kn. The current sets 046°T at 0.8 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 190°T, 1.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.3 kn. The current sets 179°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 042°T, 2.7 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.5 kn. The current sets 238°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 218°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.2 kn. The current sets 047°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 062°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 9.8 kn. The current sets 222°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 049°T, 3.9 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 6.7 kn. The current sets 298°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 113 °T Speed over the ground: 5.7 kn Time to the mark: 23 min | No. 91001 (worked solution) |
| 2 | Course to steer: 276 °T Speed over the ground: 11.4 kn Time to the mark: 28 min | No. 91002 (worked solution) |
| 3 | Course to steer: 115 °T Speed over the ground: 7.0 kn Time to the mark: 42 min | No. 91003 (worked solution) |
| 4 | Course to steer: 297 °T Speed over the ground: 8.7 kn Time to the mark: 33 min | No. 91004 (worked solution) |
| 5 | Course to steer: 136 °T Speed over the ground: 6.4 kn Time to the mark: 40 min | No. 91005 (worked solution) |
| 6 | Course to steer: 295 °T Speed over the ground: 6.8 kn Time to the mark: 29 min | No. 91006 (worked solution) |
| 7 | Course to steer: 021 °T Speed over the ground: 8.4 kn Time to the mark: 23 min | No. 91007 (worked solution) |
| 8 | Course to steer: 136 °T Speed over the ground: 5.7 kn Time to the mark: 43 min | No. 91008 (worked solution) |