Worksheet 55 · Skill 6
Course to steer
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You are at 115°T, 1.9 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.7 kn. The current sets 259°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 188°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.0 kn. The current sets 263°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 299°T, 3.3 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.5 kn. The current sets 045°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 303°T, 2.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.2 kn. The current sets 237°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 284°T, 2.8 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.3 kn. The current sets 259°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 008°T, 2.2 nm from Mill stack, bound for Green can "1". Your speed through the water is 7.0 kn. The current sets 307°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 212°T, 1.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.9 kn. The current sets 014°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 072°T, 1.0 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.3 kn. The current sets 016°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 018 °T Speed over the ground: 10.7 kn Time to the mark: 26 min | No. 55001 (worked solution) |
| 2 | Course to steer: 242 °T Speed over the ground: 12.3 kn Time to the mark: 18 min | No. 55002 (worked solution) |
| 3 | Course to steer: 184 °T Speed over the ground: 4.0 kn Time to the mark: 52 min | No. 55003 (worked solution) |
| 4 | Course to steer: 197 °T Speed over the ground: 7.5 kn Time to the mark: 37 min | No. 55004 (worked solution) |
| 5 | Course to steer: 137 °T Speed over the ground: 4.6 kn Time to the mark: 33 min | No. 55005 (worked solution) |
| 6 | Course to steer: 290 °T Speed over the ground: 8.6 kn Time to the mark: 16 min | No. 55006 (worked solution) |
| 7 | Course to steer: 295 °T Speed over the ground: 12.4 kn Time to the mark: 17 min | No. 55007 (worked solution) |
| 8 | Course to steer: 110 °T Speed over the ground: 5.3 kn Time to the mark: 53 min | No. 55008 (worked solution) |