Worksheet 617 · Skill 6
Course to steer
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You are at 066°T, 1.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.1 kn. The current sets 107°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 075°T, 2.7 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.6 kn. The current sets 078°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 132°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.2 kn. The current sets 054°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 013°T, 1.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.0 kn. The current sets 177°T at 0.8 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 030°T, 3.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.8 kn. The current sets 193°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
You are at 004°T, 2.9 nm from Mill stack, bound for Bell buoy "HS". Your speed through the water is 8.2 kn. The current sets 133°T at 0.5 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 018°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.0 kn. The current sets 354°T at 0.6 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 001°T, 1.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.4 kn. The current sets 084°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: 070 °T Speed over the ground: 9.1 kn Time to the mark: 19 min | No. 617001 (worked solution) |
| 2 | Course to steer: 268 °T Speed over the ground: 4.7 kn Time to the mark: 77 min | No. 617002 (worked solution) |
| 3 | Course to steer: 003 °T Speed over the ground: 9.9 kn Time to the mark: 30 min | No. 617003 (worked solution) |
| 4 | Course to steer: 128 °T Speed over the ground: 5.6 kn Time to the mark: 51 min | No. 617004 (worked solution) |
| 5 | Course to steer: 146 °T Speed over the ground: 11.4 kn Time to the mark: 27 min | No. 617005 (worked solution) |
| 6 | Course to steer: 047 °T Speed over the ground: 8.3 kn Time to the mark: 53 min | No. 617006 (worked solution) |
| 7 | Course to steer: 261 °T Speed over the ground: 8.0 kn Time to the mark: 29 min | No. 617007 (worked solution) |
| 8 | Course to steer: 124 °T Speed over the ground: 10.1 kn Time to the mark: 29 min | No. 617008 (worked solution) |