Worksheet 251 · Skill 6
Course to steer
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You are at 277°T, 2.5 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 9.9 kn. The current sets 141°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 071°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 045°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 275°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.8 kn. The current sets 197°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 057°T, 2.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.1 kn. The current sets 042°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 054°T, 2.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.3 kn. The current sets 171°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 227°T, 2.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.7 kn. The current sets 079°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
You are at 306°T, 3.8 nm from Mill stack, bound for Red nun "2". Your speed through the water is 10.0 kn. The current sets 247°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 163°T, 1.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.1 kn. The current sets 034°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: 198 °T Speed over the ground: 10.9 kn Time to the mark: 16 min | No. 251001 (worked solution) |
| 2 | Course to steer: 174 °T Speed over the ground: 4.2 kn Time to the mark: 39 min | No. 251002 (worked solution) |
| 3 | Course to steer: 271 °T Speed over the ground: 7.4 kn Time to the mark: 31 min | No. 251003 (worked solution) |
| 4 | Course to steer: 250 °T Speed over the ground: 7.3 kn Time to the mark: 59 min | No. 251004 (worked solution) |
| 5 | Course to steer: 152 °T Speed over the ground: 11.2 kn Time to the mark: 21 min | No. 251005 (worked solution) |
| 6 | Course to steer: 289 °T Speed over the ground: 9.8 kn Time to the mark: 22 min | No. 251006 (worked solution) |
| 7 | Course to steer: 055 °T Speed over the ground: 7.8 kn Time to the mark: 18 min | No. 251007 (worked solution) |
| 8 | Course to steer: 244 °T Speed over the ground: 9.4 kn Time to the mark: 23 min | No. 251008 (worked solution) |