Worksheet 415 · Skill 6
Course to steer
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You are at 049°T, 3.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.9 kn. The current sets 011°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 319°T, 0.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.4 kn. The current sets 053°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 095°T, 1.9 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 6.0 kn. The current sets 079°T at 1.7 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 102°T, 2.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.3 kn. The current sets 051°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 293°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.1 kn. The current sets 254°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 306°T, 3.5 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.4 kn. The current sets 322°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 324°T, 2.9 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 10.9 kn. The current sets 203°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 029°T, 2.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.3 kn. The current sets 158°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: 251 °T Speed over the ground: 11.2 kn Time to the mark: 32 min | No. 415001 (worked solution) |
| 2 | Course to steer: 250 °T Speed over the ground: 5.6 kn Time to the mark: 53 min | No. 415002 (worked solution) |
| 3 | Course to steer: 358 °T Speed over the ground: 6.5 kn Time to the mark: 21 min | No. 415003 (worked solution) |
| 4 | Course to steer: 127 °T Speed over the ground: 5.8 kn Time to the mark: 23 min | No. 415004 (worked solution) |
| 5 | Course to steer: 196 °T Speed over the ground: 11.5 kn Time to the mark: 22 min | No. 415005 (worked solution) |
| 6 | Course to steer: 106 °T Speed over the ground: 7.6 kn Time to the mark: 54 min | No. 415006 (worked solution) |
| 7 | Course to steer: 282 °T Speed over the ground: 11.1 kn Time to the mark: 25 min | No. 415007 (worked solution) |
| 8 | Course to steer: 258 °T Speed over the ground: 7.2 kn Time to the mark: 55 min | No. 415008 (worked solution) |