Worksheet 405 · Skill 6
Course to steer
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You are at 150°T, 1.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.0 kn. The current sets 336°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 246°T, 1.2 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.0 kn. The current sets 001°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 307°T, 3.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.7 kn. The current sets 081°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 262°T, 3.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.8 kn. The current sets 006°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 244°T, 1.3 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 9.2 kn. The current sets 018°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 347°T, 1.2 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 11.4 kn. The current sets 327°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 195°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.2 kn. The current sets 198°T at 2.1 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 084°T, 1.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.4 kn. The current sets 344°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 092 °T Speed over the ground: 8.4 kn Time to the mark: 35 min | No. 405001 (worked solution) |
| 2 | Course to steer: 246 °T Speed over the ground: 5.4 kn Time to the mark: 47 min | No. 405002 (worked solution) |
| 3 | Course to steer: 193 °T Speed over the ground: 5.5 kn Time to the mark: 49 min | No. 405003 (worked solution) |
| 4 | Course to steer: 259 °T Speed over the ground: 5.6 kn Time to the mark: 26 min | No. 405004 (worked solution) |
| 5 | Course to steer: 041 °T Speed over the ground: 10.6 kn Time to the mark: 31 min | No. 405005 (worked solution) |
| 6 | Course to steer: 282 °T Speed over the ground: 12.5 kn Time to the mark: 30 min | No. 405006 (worked solution) |
| 7 | Course to steer: 322 °T Speed over the ground: 10.2 kn Time to the mark: 24 min | No. 405007 (worked solution) |
| 8 | Course to steer: 107 °T Speed over the ground: 10.4 kn Time to the mark: 26 min | No. 405008 (worked solution) |