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Worksheet 330 · Skill 6

Course to steer

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  1. You are at 278°T, 3.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.7 kn. The current sets 088°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  

  2. You are at 029°T, 1.3 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 7.2 kn. The current sets 260°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  

  3. You are at 338°T, 1.5 nm from Heron Point Light, bound for Green can "1". Your speed through the water is 10.1 kn. The current sets 177°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  

  4. You are at 010°T, 3.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.2 kn. The current sets 007°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 043°T, 4.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.2 kn. The current sets 233°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  

  6. You are at 058°T, 1.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.8 kn. The current sets 074°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  

  7. You are at 042°T, 3.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.6 kn. The current sets 181°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  

  8. You are at 153°T, 2.9 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 6.4 kn. The current sets 033°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  

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: 203 °T
Speed over the ground: 5.2 kn
Time to the mark: 42 min
No. 330001 (worked solution)
2Course to steer: 044 °T
Speed over the ground: 5.6 kn
Time to the mark: 33 min
No. 330002 (worked solution)
3Course to steer: 076 °T
Speed over the ground: 9.9 kn
Time to the mark: 14 min
No. 330003 (worked solution)
4Course to steer: 148 °T
Speed over the ground: 6.5 kn
Time to the mark: 57 min
No. 330004 (worked solution)
5Course to steer: 157 °T
Speed over the ground: 6.5 kn
Time to the mark: 44 min
No. 330005 (worked solution)
6Course to steer: 133 °T
Speed over the ground: 8.9 kn
Time to the mark: 26 min
No. 330006 (worked solution)
7Course to steer: 161 °T
Speed over the ground: 12.9 kn
Time to the mark: 23 min
No. 330007 (worked solution)
8Course to steer: 275 °T
Speed over the ground: 5.8 kn
Time to the mark: 33 min
No. 330008 (worked solution)