Worksheet 490 · Skill 6
Course to steer
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You are at 340°T, 2.6 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.3 kn. The current sets 064°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 283°T, 3.2 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.0 kn. The current sets 198°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 137°T, 1.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.1 kn. The current sets 212°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 049°T, 3.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.4 kn. The current sets 009°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, 3.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.4 kn. The current sets 236°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 356°T, 1.6 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 11.6 kn. The current sets 039°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 052°T, 3.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.4 kn. The current sets 149°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 088°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.5 kn. The current sets 288°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 199 °T Speed over the ground: 10.0 kn Time to the mark: 25 min | No. 490001 (worked solution) |
| 2 | Course to steer: 141 °T Speed over the ground: 9.9 kn Time to the mark: 16 min | No. 490002 (worked solution) |
| 3 | Course to steer: 084 °T Speed over the ground: 8.9 kn Time to the mark: 22 min | No. 490003 (worked solution) |
| 4 | Course to steer: 252 °T Speed over the ground: 7.1 kn Time to the mark: 54 min | No. 490004 (worked solution) |
| 5 | Course to steer: 161 °T Speed over the ground: 9.6 kn Time to the mark: 32 min | No. 490005 (worked solution) |
| 6 | Course to steer: 086 °T Speed over the ground: 12.7 kn Time to the mark: 12 min | No. 490006 (worked solution) |
| 7 | Course to steer: 171 °T Speed over the ground: 13.1 kn Time to the mark: 20 min | No. 490007 (worked solution) |
| 8 | Course to steer: 021 °T Speed over the ground: 8.5 kn Time to the mark: 27 min | No. 490008 (worked solution) |