Worksheet 177 · Skill 6
Course to steer
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You are at 043°T, 0.9 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 7.9 kn. The current sets 340°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 227°T, 1.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.6 kn. The current sets 166°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 210°T, 1.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.3 kn. The current sets 199°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 193°T, 1.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.0 kn. The current sets 044°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 227°T, 2.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.9 kn. The current sets 033°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 006°T, 1.8 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.0 kn. The current sets 266°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 285°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.6 kn. The current sets 138°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 295°T, 3.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.7 kn. The current sets 023°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: 035 °T Speed over the ground: 8.9 kn Time to the mark: 24 min | No. 177001 (worked solution) |
| 2 | Course to steer: 238 °T Speed over the ground: 7.0 kn Time to the mark: 30 min | No. 177002 (worked solution) |
| 3 | Course to steer: 296 °T Speed over the ground: 7.3 kn Time to the mark: 35 min | No. 177003 (worked solution) |
| 4 | Course to steer: 279 °T Speed over the ground: 6.4 kn Time to the mark: 44 min | No. 177004 (worked solution) |
| 5 | Course to steer: 264 °T Speed over the ground: 4.8 kn Time to the mark: 47 min | No. 177005 (worked solution) |
| 6 | Course to steer: 240 °T Speed over the ground: 6.6 kn Time to the mark: 55 min | No. 177006 (worked solution) |
| 7 | Course to steer: 290 °T Speed over the ground: 9.0 kn Time to the mark: 13 min | No. 177007 (worked solution) |
| 8 | Course to steer: 106 °T Speed over the ground: 8.3 kn Time to the mark: 48 min | No. 177008 (worked solution) |