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Worksheet 569 · Skill 6

Course to steer

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  1. You are at 022°T, 3.6 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 352°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  

  2. You are at 010°T, 3.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.6 kn. The current sets 013°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  

  3. You are at 161°T, 1.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.4 kn. The current sets 101°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 348°T, 2.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.2 kn. The current sets 325°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  

  5. You are at 189°T, 1.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.3 kn. The current sets 240°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  

  6. You are at 018°T, 1.3 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 9.9 kn. The current sets 259°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  

  7. You are at 003°T, 1.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.0 kn. The current sets 001°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  

  8. You are at 336°T, 1.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.2 kn. The current sets 349°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: 156 °T
Speed over the ground: 3.7 kn
Time to the mark: 90 min
No. 569001 (worked solution)
2Course to steer: 153 °T
Speed over the ground: 4.5 kn
Time to the mark: 79 min
No. 569002 (worked solution)
3Course to steer: 076 °T
Speed over the ground: 11.1 kn
Time to the mark: 28 min
No. 569003 (worked solution)
4Course to steer: 193 °T
Speed over the ground: 6.0 kn
Time to the mark: 54 min
No. 569004 (worked solution)
5Course to steer: 300 °T
Speed over the ground: 7.4 kn
Time to the mark: 39 min
No. 569005 (worked solution)
6Course to steer: 289 °T
Speed over the ground: 11.3 kn
Time to the mark: 36 min
No. 569006 (worked solution)
7Course to steer: 142 °T
Speed over the ground: 6.6 kn
Time to the mark: 44 min
No. 569007 (worked solution)
8Course to steer: 239 °T
Speed over the ground: 10.6 kn
Time to the mark: 25 min
No. 569008 (worked solution)