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Worksheet 728 · Skill 6

Course to steer

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  1. You are at 325°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.3 kn. The current sets 099°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  

  2. You are at 295°T, 1.7 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.0 kn. The current sets 309°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  

  3. You are at 199°T, 2.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 10.3 kn. The current sets 064°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  

  4. You are at 047°T, 4.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.4 kn. The current sets 054°T at 1.3 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  

  5. You are at 088°T, 3.0 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.4 kn. The current sets 355°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 308°T, 4.1 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.7 kn. The current sets 128°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 144°T, 1.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.2 kn. The current sets 300°T at 1.2 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  

  8. You are at 077°T, 3.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 249°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  

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: 215 °T
Speed over the ground: 7.0 kn
Time to the mark: 46 min
No. 728001 (worked solution)
2Course to steer: 177 °T
Speed over the ground: 10.0 kn
Time to the mark: 14 min
No. 728002 (worked solution)
3Course to steer: 279 °T
Speed over the ground: 8.9 kn
Time to the mark: 33 min
No. 728003 (worked solution)
4Course to steer: 173 °T
Speed over the ground: 7.8 kn
Time to the mark: 34 min
No. 728004 (worked solution)
5Course to steer: 113 °T
Speed over the ground: 7.8 kn
Time to the mark: 21 min
No. 728005 (worked solution)
6Course to steer: 165 °T
Speed over the ground: 13.5 kn
Time to the mark: 20 min
No. 728006 (worked solution)
7Course to steer: 092 °T
Speed over the ground: 7.2 kn
Time to the mark: 27 min
No. 728007 (worked solution)
8Course to steer: 124 °T
Speed over the ground: 4.6 kn
Time to the mark: 32 min
No. 728008 (worked solution)