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Worksheet 182 · Skill 6

Course to steer

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  1. You are at 057°T, 2.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.0 kn. The current sets 339°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  

  2. You are at 045°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.4 kn. The current sets 037°T at 1.4 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  

  3. You are at 340°T, 1.6 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.6 kn. The current sets 131°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  

  4. You are at 143°T, 2.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.7 kn. The current sets 121°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  

  5. You are at 261°T, 2.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.8 kn. The current sets 036°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 302°T, 4.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 9.3 kn. The current sets 049°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  

  7. You are at 007°T, 2.8 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.5 kn. The current sets 050°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  

  8. You are at 313°T, 1.7 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 11.9 kn. The current sets 250°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  

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: 126 °T
Speed over the ground: 8.2 kn
Time to the mark: 29 min
No. 182001 (worked solution)
2Course to steer: 259 °T
Speed over the ground: 5.4 kn
Time to the mark: 50 min
No. 182002 (worked solution)
3Course to steer: 087 °T
Speed over the ground: 8.4 kn
Time to the mark: 32 min
No. 182003 (worked solution)
4Course to steer: 260 °T
Speed over the ground: 9.0 kn
Time to the mark: 34 min
No. 182004 (worked solution)
5Course to steer: 196 °T
Speed over the ground: 4.4 kn
Time to the mark: 29 min
No. 182005 (worked solution)
6Course to steer: 184 °T
Speed over the ground: 7.9 kn
Time to the mark: 37 min
No. 182006 (worked solution)
7Course to steer: 145 °T
Speed over the ground: 10.5 kn
Time to the mark: 33 min
No. 182007 (worked solution)
8Course to steer: 023 °T
Speed over the ground: 11.3 kn
Time to the mark: 32 min
No. 182008 (worked solution)