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Worksheet 360 · Skill 6

Course to steer

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  1. You are at 049°T, 2.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.2 kn. The current sets 226°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  

  2. You are at 296°T, 2.1 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 12.0 kn. The current sets 184°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  

  3. You are at 019°T, 1.4 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 6.1 kn. The current sets 038°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  

  4. You are at 167°T, 1.6 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 8.2 kn. The current sets 129°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  

  5. You are at 323°T, 2.5 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.5 kn. The current sets 250°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  

  6. You are at 040°T, 4.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.2 kn. The current sets 207°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  

  7. You are at 104°T, 1.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.8 kn. The current sets 030°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  

  8. You are at 143°T, 3.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 191°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

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: 264 °T
Speed over the ground: 12.4 kn
Time to the mark: 28 min
No. 360001 (worked solution)
2Course to steer: 298 °T
Speed over the ground: 11.3 kn
Time to the mark: 27 min
No. 360002 (worked solution)
3Course to steer: 071 °T
Speed over the ground: 7.5 kn
Time to the mark: 29 min
No. 360003 (worked solution)
4Course to steer: 273 °T
Speed over the ground: 7.5 kn
Time to the mark: 17 min
No. 360004 (worked solution)
5Course to steer: 179 °T
Speed over the ground: 9.8 kn
Time to the mark: 22 min
No. 360005 (worked solution)
6Course to steer: 139 °T
Speed over the ground: 10.0 kn
Time to the mark: 29 min
No. 360006 (worked solution)
7Course to steer: 139 °T
Speed over the ground: 7.4 kn
Time to the mark: 22 min
No. 360007 (worked solution)
8Course to steer: 051 °T
Speed over the ground: 4.8 kn
Time to the mark: 32 min
No. 360008 (worked solution)