Worksheet 411 · Skill 6
Course to steer
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You are at 301°T, 1.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.4 kn. The current sets 290°T at 2.5 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 344°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.8 kn. The current sets 123°T at 2.5 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 051°T, 3.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.5 kn. The current sets 271°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 042°T, 3.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.2 kn. The current sets 189°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 278°T, 3.1 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.3 kn. The current sets 049°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 258°T, 2.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.8 kn. The current sets 148°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 304°T, 1.8 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 5.8 kn. The current sets 253°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 046°T, 3.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.1 kn. The current sets 098°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: 191 °T Speed over the ground: 7.5 kn Time to the mark: 36 min | No. 411001 (worked solution) |
| 2 | Course to steer: 272 °T Speed over the ground: 3.9 kn Time to the mark: 83 min | No. 411002 (worked solution) |
| 3 | Course to steer: 161 °T Speed over the ground: 10.2 kn Time to the mark: 25 min | No. 411003 (worked solution) |
| 4 | Course to steer: 127 °T Speed over the ground: 7.5 kn Time to the mark: 36 min | No. 411004 (worked solution) |
| 5 | Course to steer: 157 °T Speed over the ground: 5.1 kn Time to the mark: 29 min | No. 411005 (worked solution) |
| 6 | Course to steer: 219 °T Speed over the ground: 11.7 kn Time to the mark: 15 min | No. 411006 (worked solution) |
| 7 | Course to steer: 026 °T Speed over the ground: 5.4 kn Time to the mark: 69 min | No. 411007 (worked solution) |
| 8 | Course to steer: 162 °T Speed over the ground: 5.6 kn Time to the mark: 44 min | No. 411008 (worked solution) |