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Worksheet 19 · Skill 6

Course to steer

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  1. You are at 026°T, 1.7 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 5.3 kn. The current sets 146°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  

  2. You are at 336°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 10.9 kn. The current sets 154°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  

  3. You are at 136°T, 1.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.2 kn. The current sets 029°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  

  4. You are at 008°T, 2.1 nm from Mill stack, bound for Red nun "2". Your speed through the water is 6.6 kn. The current sets 002°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  

  5. You are at 202°T, 1.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.9 kn. The current sets 179°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  

  6. You are at 272°T, 2.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.0 kn. The current sets 287°T at 0.6 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  

  7. You are at 134°T, 1.5 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.2 kn. The current sets 174°T at 0.5 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  

  8. You are at 081°T, 2.8 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.1 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  

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: 296 °T
Speed over the ground: 3.9 kn
Time to the mark: 110 min
No. 19001 (worked solution)
2Course to steer: 256 °T
Speed over the ground: 10.7 kn
Time to the mark: 29 min
No. 19002 (worked solution)
3Course to steer: 282 °T
Speed over the ground: 10.8 kn
Time to the mark: 26 min
No. 19003 (worked solution)
4Course to steer: 302 °T
Speed over the ground: 8.1 kn
Time to the mark: 16 min
No. 19004 (worked solution)
5Course to steer: 313 °T
Speed over the ground: 4.6 kn
Time to the mark: 58 min
No. 19005 (worked solution)
6Course to steer: 188 °T
Speed over the ground: 5.9 kn
Time to the mark: 33 min
No. 19006 (worked solution)
7Course to steer: 047 °T
Speed over the ground: 5.9 kn
Time to the mark: 38 min
No. 19007 (worked solution)
8Course to steer: 136 °T
Speed over the ground: 4.0 kn
Time to the mark: 35 min
No. 19008 (worked solution)