Worksheet 170 · Skill 6
Course to steer
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You are at 030°T, 2.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.0 kn. The current sets 015°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 249°T, 2.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.9 kn. The current sets 253°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 028°T, 0.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.6 kn. The current sets 131°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 047°T, 0.9 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 5.2 kn. The current sets 347°T at 2.2 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 034°T, 2.1 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.2 kn. The current sets 333°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 126°T, 2.0 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.4 kn. The current sets 098°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 285°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.9 kn. The current sets 226°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 104°T, 2.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.8 kn. The current sets 126°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 148 °T Speed over the ground: 5.6 kn Time to the mark: 52 min | No. 170001 (worked solution) |
| 2 | Course to steer: 276 °T Speed over the ground: 9.4 kn Time to the mark: 22 min | No. 170002 (worked solution) |
| 3 | Course to steer: 276 °T Speed over the ground: 4.3 kn Time to the mark: 74 min | No. 170003 (worked solution) |
| 4 | Course to steer: 074 °T Speed over the ground: 5.8 kn Time to the mark: 23 min | No. 170004 (worked solution) |
| 5 | Course to steer: 247 °T Speed over the ground: 10.6 kn Time to the mark: 27 min | No. 170005 (worked solution) |
| 6 | Course to steer: 116 °T Speed over the ground: 7.2 kn Time to the mark: 19 min | No. 170006 (worked solution) |
| 7 | Course to steer: 289 °T Speed over the ground: 7.2 kn Time to the mark: 18 min | No. 170007 (worked solution) |
| 8 | Course to steer: 085 °T Speed over the ground: 11.7 kn Time to the mark: 17 min | No. 170008 (worked solution) |