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Worksheet 59 · Skill 6

Course to steer

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  1. You are at 042°T, 1.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.6 kn. The current sets 049°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  

  2. You are at 101°T, 2.1 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.2 kn. The current sets 174°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  

  3. You are at 090°T, 1.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.7 kn. The current sets 043°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  

  4. You are at 313°T, 1.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.0 kn. The current sets 101°T at 1.0 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  

  5. You are at 273°T, 3.7 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.3 kn. The current sets 014°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  

  6. You are at 304°T, 3.6 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.0 kn. The current sets 280°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  

  7. You are at 005°T, 1.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.0 kn. The current sets 314°T at 0.7 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 148°T, 1.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.4 kn. The current sets 220°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  

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: 132 °T
Speed over the ground: 8.8 kn
Time to the mark: 28 min
No. 59001 (worked solution)
2Course to steer: 261 °T
Speed over the ground: 7.5 kn
Time to the mark: 44 min
No. 59002 (worked solution)
3Course to steer: 144 °T
Speed over the ground: 8.6 kn
Time to the mark: 22 min
No. 59003 (worked solution)
4Course to steer: 224 °T
Speed over the ground: 4.5 kn
Time to the mark: 63 min
No. 59004 (worked solution)
5Course to steer: 140 °T
Speed over the ground: 8.5 kn
Time to the mark: 19 min
No. 59005 (worked solution)
6Course to steer: 145 °T
Speed over the ground: 4.1 kn
Time to the mark: 56 min
No. 59006 (worked solution)
7Course to steer: 254 °T
Speed over the ground: 11.4 kn
Time to the mark: 26 min
No. 59007 (worked solution)
8Course to steer: 255 °T
Speed over the ground: 11.7 kn
Time to the mark: 20 min
No. 59008 (worked solution)