Worksheet 410 · Skill 6
Course to steer
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You are at 035°T, 2.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.8 kn. The current sets 025°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 335°T, 1.9 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.7 kn. The current sets 030°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 164°T, 0.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.6 kn. The current sets 077°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 291°T, 3.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 12.0 kn. The current sets 199°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 292°T, 4.3 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 7.4 kn. The current sets 076°T at 1.1 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 313°T, 1.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.2 kn. The current sets 164°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 262°T, 2.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.5 kn. The current sets 033°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 062°T, 2.4 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 10.8 kn. The current sets 281°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 109 °T Speed over the ground: 6.1 kn Time to the mark: 28 min | No. 410001 (worked solution) |
| 2 | Course to steer: 114 °T Speed over the ground: 7.4 kn Time to the mark: 39 min | No. 410002 (worked solution) |
| 3 | Course to steer: 269 °T Speed over the ground: 6.8 kn Time to the mark: 50 min | No. 410003 (worked solution) |
| 4 | Course to steer: 082 °T Speed over the ground: 11.3 kn Time to the mark: 39 min | No. 410004 (worked solution) |
| 5 | Course to steer: 152 °T Speed over the ground: 7.7 kn Time to the mark: 31 min | No. 410005 (worked solution) |
| 6 | Course to steer: 219 °T Speed over the ground: 8.8 kn Time to the mark: 33 min | No. 410006 (worked solution) |
| 7 | Course to steer: 265 °T Speed over the ground: 8.5 kn Time to the mark: 20 min | No. 410007 (worked solution) |
| 8 | Course to steer: 049 °T Speed over the ground: 9.8 kn Time to the mark: 14 min | No. 410008 (worked solution) |