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Worksheet 583 · Skill 6

Course to steer

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  1. You are at 099°T, 1.7 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.2 kn. The current sets 060°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  

  2. You are at 230°T, 1.8 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.3 kn. The current sets 204°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  

  3. You are at 233°T, 2.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.1 kn. The current sets 175°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  

  4. You are at 246°T, 1.8 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.3 kn. The current sets 204°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  

  5. You are at 003°T, 1.7 nm from Mill stack, bound for Green can "1". Your speed through the water is 9.6 kn. The current sets 254°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  

  6. You are at 345°T, 1.6 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 11.3 kn. The current sets 216°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  

  7. You are at 060°T, 2.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.3 kn. The current sets 123°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  

  8. You are at 023°T, 1.9 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.2 kn. The current sets 231°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: 148 °T
Speed over the ground: 5.5 kn
Time to the mark: 29 min
No. 583001 (worked solution)
2Course to steer: 235 °T
Speed over the ground: 6.1 kn
Time to the mark: 21 min
No. 583002 (worked solution)
3Course to steer: 237 °T
Speed over the ground: 8.1 kn
Time to the mark: 17 min
No. 583003 (worked solution)
4Course to steer: 278 °T
Speed over the ground: 11.7 kn
Time to the mark: 19 min
No. 583004 (worked solution)
5Course to steer: 315 °T
Speed over the ground: 10.5 kn
Time to the mark: 13 min
No. 583005 (worked solution)
6Course to steer: 310 °T
Speed over the ground: 11.4 kn
Time to the mark: 27 min
No. 583006 (worked solution)
7Course to steer: 160 °T
Speed over the ground: 11.3 kn
Time to the mark: 19 min
No. 583007 (worked solution)
8Course to steer: 098 °T
Speed over the ground: 5.9 kn
Time to the mark: 55 min
No. 583008 (worked solution)