Worksheet 87 · Skill 6
Course to steer
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You are at 283°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.8 kn. The current sets 105°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 010°T, 3.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.3 kn. The current sets 232°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 348°T, 2.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.0 kn. The current sets 304°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 326°T, 1.8 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 8.2 kn. The current sets 052°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 002°T, 1.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.7 kn. The current sets 080°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
You are at 327°T, 2.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 12.0 kn. The current sets 147°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 098°T, 2.8 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.3 kn. The current sets 297°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 009°T, 2.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.2 kn. The current sets 083°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
Practice Sheet No. 1
Answer key
| No. | Answers | Problem |
|---|---|---|
| 1 | Course to steer: 267 °T Speed over the ground: 8.3 kn Time to the mark: 23 min | No. 87001 (worked solution) |
| 2 | Course to steer: 125 °T Speed over the ground: 10.1 kn Time to the mark: 38 min | No. 87002 (worked solution) |
| 3 | Course to steer: 199 °T Speed over the ground: 4.8 kn Time to the mark: 77 min | No. 87003 (worked solution) |
| 4 | Course to steer: 210 °T Speed over the ground: 7.2 kn Time to the mark: 37 min | No. 87004 (worked solution) |
| 5 | Course to steer: 143 °T Speed over the ground: 11.9 kn Time to the mark: 25 min | No. 87005 (worked solution) |
| 6 | Course to steer: 212 °T Speed over the ground: 12.7 kn Time to the mark: 26 min | No. 87006 (worked solution) |
| 7 | Course to steer: 004 °T Speed over the ground: 9.3 kn Time to the mark: 27 min | No. 87007 (worked solution) |
| 8 | Course to steer: 125 °T Speed over the ground: 10.0 kn Time to the mark: 37 min | No. 87008 (worked solution) |