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Worksheet 484 · Skill 6

Course to steer

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  1. You are at 308°T, 3.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.3 kn. The current sets 223°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 146°T, 1.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.2 kn. The current sets 153°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 017°T, 3.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.9 kn. The current sets 214°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 035°T, 4.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.9 kn. The current sets 002°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  

  5. You are at 068°T, 3.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 301°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  

  6. You are at 009°T, 2.7 nm from Mill stack, bound for Green can "1". Your speed through the water is 9.0 kn. The current sets 056°T at 2.5 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  

  7. You are at 009°T, 3.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.9 kn. The current sets 175°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  

  8. You are at 214°T, 1.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.4 kn. The current sets 114°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  

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: 188 °T
Speed over the ground: 10.7 kn
Time to the mark: 29 min
No. 484001 (worked solution)
2Course to steer: 258 °T
Speed over the ground: 10.8 kn
Time to the mark: 27 min
No. 484002 (worked solution)
3Course to steer: 111 °T
Speed over the ground: 5.8 kn
Time to the mark: 62 min
No. 484003 (worked solution)
4Course to steer: 171 °T
Speed over the ground: 6.7 kn
Time to the mark: 50 min
No. 484004 (worked solution)
5Course to steer: 147 °T
Speed over the ground: 4.5 kn
Time to the mark: 39 min
No. 484005 (worked solution)
6Course to steer: 270 °T
Speed over the ground: 7.1 kn
Time to the mark: 19 min
No. 484006 (worked solution)
7Course to steer: 141 °T
Speed over the ground: 7.4 kn
Time to the mark: 49 min
No. 484007 (worked solution)
8Course to steer: 250 °T
Speed over the ground: 5.7 kn
Time to the mark: 25 min
No. 484008 (worked solution)