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Worksheet 722 · Skill 6

Course to steer

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  1. You are at 094°T, 2.7 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.2 kn. The current sets 215°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  

  2. You are at 135°T, 1.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.9 kn. The current sets 059°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  

  3. You are at 210°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 10.2 kn. The current sets 353°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  

  4. You are at 189°T, 1.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.8 kn. The current sets 156°T at 1.4 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  

  5. You are at 257°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 9.9 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  

  6. You are at 186°T, 1.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 12.0 kn. The current sets 182°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  

  7. You are at 261°T, 0.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.4 kn. The current sets 238°T at 1.4 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  

  8. You are at 299°T, 2.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.5 kn. The current sets 232°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  

Practice Sheet No. 1

Practice Sheet No. 1 with the starting fixes of this worksheet 34 41 22 38 29 18 27 44 12 21 19 N VAR 7°W (invented) Heron Sound Heron Point Tern Island Westfield Kittle Gannet Rock Fl W 4s 52ft 14M TR TANK SPIRE STACK Dbn 1 2 3 HS 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Border scale: nautical miles (1 nm = 10 ticks) PRACTICE SHEET No. 1 · HERON SOUNDInvented for practice · NOT FOR NAVIGATION · Plotroom Start Start Start Start Start Start Start Start

Answer key

No.AnswersProblem
1Course to steer: 123 °T
Speed over the ground: 9.2 kn
Time to the mark: 13 min
No. 722001 (worked solution)
2Course to steer: 085 °T
Speed over the ground: 9.0 kn
Time to the mark: 30 min
No. 722002 (worked solution)
3Course to steer: 275 °T
Speed over the ground: 10.5 kn
Time to the mark: 27 min
No. 722003 (worked solution)
4Course to steer: 263 °T
Speed over the ground: 6.5 kn
Time to the mark: 27 min
No. 722004 (worked solution)
5Course to steer: 307 °T
Speed over the ground: 8.5 kn
Time to the mark: 16 min
No. 722005 (worked solution)
6Course to steer: 243 °T
Speed over the ground: 12.4 kn
Time to the mark: 19 min
No. 722006 (worked solution)
7Course to steer: 299 °T
Speed over the ground: 9.2 kn
Time to the mark: 18 min
No. 722007 (worked solution)
8Course to steer: 199 °T
Speed over the ground: 12.5 kn
Time to the mark: 21 min
No. 722008 (worked solution)