Worksheet 253 · Skill 6
Course to steer
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You are at 142°T, 1.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.5 kn. The current sets 349°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 241°T, 2.3 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 6.0 kn. The current sets 276°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 153°T, 2.5 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 10.9 kn. The current sets 218°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 351°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.0 kn. The current sets 203°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 013°T, 1.9 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.0 kn. The current sets 113°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 042°T, 4.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.7 kn. The current sets 174°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 054°T, 2.5 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.2 kn. The current sets 055°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 057°T, 2.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.6 kn. The current sets 000°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 090 °T Speed over the ground: 9.3 kn Time to the mark: 30 min | No. 253001 (worked solution) |
| 2 | Course to steer: 058 °T Speed over the ground: 4.5 kn Time to the mark: 87 min | No. 253002 (worked solution) |
| 3 | Course to steer: 288 °T Speed over the ground: 11.3 kn Time to the mark: 15 min | No. 253003 (worked solution) |
| 4 | Course to steer: 257 °T Speed over the ground: 6.7 kn Time to the mark: 43 min | No. 253004 (worked solution) |
| 5 | Course to steer: 093 °T Speed over the ground: 8.2 kn Time to the mark: 26 min | No. 253005 (worked solution) |
| 6 | Course to steer: 145 °T Speed over the ground: 10.9 kn Time to the mark: 26 min | No. 253006 (worked solution) |
| 7 | Course to steer: 359 °T Speed over the ground: 8.7 kn Time to the mark: 16 min | No. 253007 (worked solution) |
| 8 | Course to steer: 245 °T Speed over the ground: 7.9 kn Time to the mark: 50 min | No. 253008 (worked solution) |