Worksheet 71 · Skill 6
Course to steer
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You are at 295°T, 2.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.3 kn. The current sets 339°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 050°T, 2.5 nm from Mill stack, bound for Green can "1". Your speed through the water is 8.9 kn. The current sets 313°T at 2.1 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 059°T, 2.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.3 kn. The current sets 319°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
You are at 106°T, 1.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.9 kn. The current sets 113°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 002°T, 1.5 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 7.3 kn. The current sets 139°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 039°T, 2.8 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.1 kn. The current sets 030°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 050°T, 3.9 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.5 kn. The current sets 343°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 125°T, 1.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.3 kn. The current sets 305°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 194 °T Speed over the ground: 9.9 kn Time to the mark: 26 min | No. 71001 (worked solution) |
| 2 | Course to steer: 287 °T Speed over the ground: 10.8 kn Time to the mark: 22 min | No. 71002 (worked solution) |
| 3 | Course to steer: 090 °T Speed over the ground: 4.9 kn Time to the mark: 28 min | No. 71003 (worked solution) |
| 4 | Course to steer: 132 °T Speed over the ground: 7.4 kn Time to the mark: 19 min | No. 71004 (worked solution) |
| 5 | Course to steer: 300 °T Speed over the ground: 6.1 kn Time to the mark: 54 min | No. 71005 (worked solution) |
| 6 | Course to steer: 243 °T Speed over the ground: 6.6 kn Time to the mark: 63 min | No. 71006 (worked solution) |
| 7 | Course to steer: 143 °T Speed over the ground: 4.6 kn Time to the mark: 52 min | No. 71007 (worked solution) |
| 8 | Course to steer: 269 °T Speed over the ground: 10.0 kn Time to the mark: 34 min | No. 71008 (worked solution) |