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Worksheet 116 · Skill 6

Course to steer

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  1. You are at 019°T, 1.7 nm from Mill stack, bound for Red nun "2". Your speed through the water is 9.4 kn. The current sets 102°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  

  2. You are at 047°T, 2.1 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.9 kn. The current sets 179°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  

  3. You are at 314°T, 2.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.0 kn. The current sets 269°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  

  4. You are at 001°T, 2.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.5 kn. The current sets 281°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  

  5. You are at 134°T, 3.1 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.1 kn. The current sets 063°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 015°T, 2.4 nm from Mill stack, bound for Red nun "2". Your speed through the water is 11.5 kn. The current sets 109°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  

  7. You are at 328°T, 2.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.2 kn. The current sets 122°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  

  8. You are at 080°T, 3.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.4 kn. The current sets 276°T at 2.2 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  

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: 311 °T
Speed over the ground: 7.4 kn
Time to the mark: 22 min
No. 116001 (worked solution)
2Course to steer: 143 °T
Speed over the ground: 10.0 kn
Time to the mark: 24 min
No. 116002 (worked solution)
3Course to steer: 192 °T
Speed over the ground: 10.2 kn
Time to the mark: 31 min
No. 116003 (worked solution)
4Course to steer: 202 °T
Speed over the ground: 8.1 kn
Time to the mark: 46 min
No. 116004 (worked solution)
5Course to steer: 019 °T
Speed over the ground: 8.4 kn
Time to the mark: 28 min
No. 116005 (worked solution)
6Course to steer: 304 °T
Speed over the ground: 9.5 kn
Time to the mark: 14 min
No. 116006 (worked solution)
7Course to steer: 097 °T
Speed over the ground: 8.2 kn
Time to the mark: 40 min
No. 116007 (worked solution)
8Course to steer: 132 °T
Speed over the ground: 4.8 kn
Time to the mark: 29 min
No. 116008 (worked solution)