Worksheet 423 · Skill 6
Course to steer
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You are at 015°T, 2.3 nm from Mill stack, bound for Green can "1". Your speed through the water is 8.7 kn. The current sets 203°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 331°T, 1.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.5 kn. The current sets 057°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
You are at 330°T, 2.8 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.7 kn. The current sets 162°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 018°T, 2.0 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 9.2 kn. The current sets 061°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 306°T, 3.7 nm from Mill stack, bound for Red nun "2". Your speed through the water is 6.8 kn. The current sets 247°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 212°T, 1.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.1 kn. The current sets 190°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
You are at 012°T, 1.8 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.3 kn. The current sets 111°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
You are at 135°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.7 kn. The current sets 004°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 300 °T Speed over the ground: 8.6 kn Time to the mark: 18 min | No. 423001 (worked solution) |
| 2 | Course to steer: 214 °T Speed over the ground: 7.4 kn Time to the mark: 44 min | No. 423002 (worked solution) |
| 3 | Course to steer: 207 °T Speed over the ground: 8.0 kn Time to the mark: 39 min | No. 423003 (worked solution) |
| 4 | Course to steer: 270 °T Speed over the ground: 7.2 kn Time to the mark: 58 min | No. 423004 (worked solution) |
| 5 | Course to steer: 056 °T Speed over the ground: 4.4 kn Time to the mark: 32 min | No. 423005 (worked solution) |
| 6 | Course to steer: 240 °T Speed over the ground: 11.9 kn Time to the mark: 18 min | No. 423006 (worked solution) |
| 7 | Course to steer: 255 °T Speed over the ground: 10.4 kn Time to the mark: 32 min | No. 423007 (worked solution) |
| 8 | Course to steer: 241 °T Speed over the ground: 7.7 kn Time to the mark: 43 min | No. 423008 (worked solution) |