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Worksheet 318 · Skill 6

Course to steer

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  1. You are at 095°T, 1.8 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.5 kn. The current sets 035°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  

  2. You are at 020°T, 1.1 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 6.4 kn. The current sets 167°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  

  3. You are at 353°T, 1.5 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 7.6 kn. The current sets 062°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  

  4. You are at 027°T, 2.5 nm from Mill stack, bound for Green can "3". Your speed through the water is 11.7 kn. The current sets 207°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  

  5. You are at 018°T, 3.7 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.6 kn. The current sets 196°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  

  6. You are at 063°T, 1.2 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 9.0 kn. The current sets 134°T at 2.0 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 042°T, 1.8 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.9 kn. The current sets 110°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  

  8. You are at 252°T, 2.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.5 kn. The current sets 085°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  

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: 127 °T
Speed over the ground: 9.6 kn
Time to the mark: 17 min
No. 318001 (worked solution)
2Course to steer: 020 °T
Speed over the ground: 4.8 kn
Time to the mark: 42 min
No. 318002 (worked solution)
3Course to steer: 273 °T
Speed over the ground: 6.6 kn
Time to the mark: 61 min
No. 318003 (worked solution)
4Course to steer: 341 °T
Speed over the ground: 10.9 kn
Time to the mark: 14 min
No. 318004 (worked solution)
5Course to steer: 149 °T
Speed over the ground: 10.8 kn
Time to the mark: 34 min
No. 318005 (worked solution)
6Course to steer: 035 °T
Speed over the ground: 8.9 kn
Time to the mark: 24 min
No. 318006 (worked solution)
7Course to steer: 261 °T
Speed over the ground: 10.8 kn
Time to the mark: 34 min
No. 318007 (worked solution)
8Course to steer: 215 °T
Speed over the ground: 9.8 kn
Time to the mark: 17 min
No. 318008 (worked solution)