Worksheet 17 · Skill 6
Course to steer
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You are at 007°T, 2.5 nm from Mill stack, bound for Green can "3". Your speed through the water is 6.3 kn. The current sets 213°T at 1.9 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 048°T, 3.1 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.7 kn. The current sets 050°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 001°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 9.2 kn. The current sets 187°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 073°T, 2.1 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 7.1 kn. The current sets 302°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 266°T, 1.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.5 kn. The current sets 250°T at 1.9 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 268°T, 2.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 8.2 kn. The current sets 100°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 066°T, 2.8 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 10.9 kn. The current sets 285°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 000°T, 1.4 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 6.7 kn. The current sets 131°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 005 °T Speed over the ground: 4.7 kn Time to the mark: 27 min | No. 17001 (worked solution) |
| 2 | Course to steer: 174 °T Speed over the ground: 6.9 kn Time to the mark: 38 min | No. 17002 (worked solution) |
| 3 | Course to steer: 269 °T Speed over the ground: 9.9 kn Time to the mark: 22 min | No. 17003 (worked solution) |
| 4 | Course to steer: 047 °T Speed over the ground: 6.9 kn Time to the mark: 25 min | No. 17004 (worked solution) |
| 5 | Course to steer: 207 °T Speed over the ground: 7.0 kn Time to the mark: 32 min | No. 17005 (worked solution) |
| 6 | Course to steer: 201 °T Speed over the ground: 8.1 kn Time to the mark: 19 min | No. 17006 (worked solution) |
| 7 | Course to steer: 044 °T Speed over the ground: 10.0 kn Time to the mark: 13 min | No. 17007 (worked solution) |
| 8 | Course to steer: 071 °T Speed over the ground: 7.1 kn Time to the mark: 21 min | No. 17008 (worked solution) |