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Worksheet 46 · Skill 6

Course to steer

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  1. You are at 138°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.1 kn. The current sets 010°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  

  2. You are at 339°T, 1.2 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 9.7 kn. The current sets 354°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  

  3. You are at 132°T, 1.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.5 kn. The current sets 182°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 300°T, 4.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.3 kn. The current sets 158°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 075°T, 2.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.3 kn. The current sets 033°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 337°T, 1.8 nm from Heron Point Light, bound for Green can "1". Your speed through the water is 5.0 kn. The current sets 303°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 172°T, 0.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.6 kn. The current sets 016°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  

  8. You are at 046°T, 3.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.3 kn. The current sets 279°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  

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: 254 °T
Speed over the ground: 6.4 kn
Time to the mark: 60 min
No. 46001 (worked solution)
2Course to steer: 081 °T
Speed over the ground: 10.1 kn
Time to the mark: 27 min
No. 46002 (worked solution)
3Course to steer: 105 °T
Speed over the ground: 5.7 kn
Time to the mark: 32 min
No. 46003 (worked solution)
4Course to steer: 176 °T
Speed over the ground: 8.3 kn
Time to the mark: 34 min
No. 46004 (worked solution)
5Course to steer: 160 °T
Speed over the ground: 6.7 kn
Time to the mark: 27 min
No. 46005 (worked solution)
6Course to steer: 106 °T
Speed over the ground: 3.1 kn
Time to the mark: 48 min
No. 46006 (worked solution)
7Course to steer: 118 °T
Speed over the ground: 5.5 kn
Time to the mark: 41 min
No. 46007 (worked solution)
8Course to steer: 249 °T
Speed over the ground: 9.5 kn
Time to the mark: 38 min
No. 46008 (worked solution)