Worksheet 23 · Skill 6
Course to steer
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You are at 271°T, 2.0 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.3 kn. The current sets 101°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 332°T, 1.2 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 9.6 kn. The current sets 011°T at 2.4 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 044°T, 2.6 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 11.5 kn. The current sets 172°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 355°T, 1.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.0 kn. The current sets 251°T at 1.4 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 220°T, 1.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.9 kn. The current sets 275°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 293°T, 1.7 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.3 kn. The current sets 121°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 207°T, 2.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 307°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 289°T, 4.0 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 7.2 kn. The current sets 069°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 042 °T Speed over the ground: 12.1 kn Time to the mark: 28 min | No. 23001 (worked solution) |
| 2 | Course to steer: 275 °T Speed over the ground: 9.6 kn Time to the mark: 37 min | No. 23002 (worked solution) |
| 3 | Course to steer: 050 °T Speed over the ground: 10.4 kn Time to the mark: 12 min | No. 23003 (worked solution) |
| 4 | Course to steer: 211 °T Speed over the ground: 12.1 kn Time to the mark: 30 min | No. 23004 (worked solution) |
| 5 | Course to steer: 232 °T Speed over the ground: 8.6 kn Time to the mark: 18 min | No. 23005 (worked solution) |
| 6 | Course to steer: 220 °T Speed over the ground: 9.2 kn Time to the mark: 28 min | No. 23006 (worked solution) |
| 7 | Course to steer: 282 °T Speed over the ground: 6.2 kn Time to the mark: 45 min | No. 23007 (worked solution) |
| 8 | Course to steer: 158 °T Speed over the ground: 7.4 kn Time to the mark: 29 min | No. 23008 (worked solution) |