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Worksheet 204 · Skill 6

Course to steer

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  1. You are at 066°T, 1.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.5 kn. The current sets 063°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  

  2. You are at 217°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.0 kn. The current sets 247°T at 1.9 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  

  3. You are at 304°T, 3.5 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 10.8 kn. The current sets 004°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  

  4. You are at 040°T, 4.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 6.4 kn. The current sets 217°T at 1.9 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  

  5. You are at 026°T, 1.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.3 kn. The current sets 356°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  

  6. You are at 004°T, 3.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.4 kn. The current sets 186°T at 1.9 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  

  7. You are at 291°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.6 kn. The current sets 179°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  

  8. You are at 085°T, 3.1 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.5 kn. The current sets 222°T at 1.9 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  

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: 129 °T
Speed over the ground: 11.5 kn
Time to the mark: 20 min
No. 204001 (worked solution)
2Course to steer: 280 °T
Speed over the ground: 8.7 kn
Time to the mark: 33 min
No. 204002 (worked solution)
3Course to steer: 100 °T
Speed over the ground: 10.7 kn
Time to the mark: 39 min
No. 204003 (worked solution)
4Course to steer: 127 °T
Speed over the ground: 6.7 kn
Time to the mark: 43 min
No. 204004 (worked solution)
5Course to steer: 136 °T
Speed over the ground: 9.6 kn
Time to the mark: 29 min
No. 204005 (worked solution)
6Course to steer: 133 °T
Speed over the ground: 11.6 kn
Time to the mark: 33 min
No. 204006 (worked solution)
7Course to steer: 288 °T
Speed over the ground: 10.3 kn
Time to the mark: 15 min
No. 204007 (worked solution)
8Course to steer: 098 °T
Speed over the ground: 10.6 kn
Time to the mark: 15 min
No. 204008 (worked solution)