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Worksheet 246 · Skill 6

Course to steer

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  1. You are at 074°T, 2.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.9 kn. The current sets 340°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  

  2. You are at 125°T, 1.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.8 kn. The current sets 338°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  

  3. You are at 034°T, 1.8 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.1 kn. The current sets 331°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 080°T, 2.6 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.2 kn. The current sets 227°T at 0.7 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 081°T, 3.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.6 kn. The current sets 242°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  

  6. You are at 034°T, 3.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.8 kn. The current sets 182°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 263°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.5 kn. The current sets 158°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  

  8. You are at 325°T, 1.6 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 6.6 kn. The current sets 080°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  

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: 255 °T
Speed over the ground: 12.2 kn
Time to the mark: 35 min
No. 246001 (worked solution)
2Course to steer: 102 °T
Speed over the ground: 6.9 kn
Time to the mark: 40 min
No. 246002 (worked solution)
3Course to steer: 100 °T
Speed over the ground: 6.6 kn
Time to the mark: 27 min
No. 246003 (worked solution)
4Course to steer: 133 °T
Speed over the ground: 10.2 kn
Time to the mark: 15 min
No. 246004 (worked solution)
5Course to steer: 132 °T
Speed over the ground: 5.3 kn
Time to the mark: 24 min
No. 246005 (worked solution)
6Course to steer: 160 °T
Speed over the ground: 12.9 kn
Time to the mark: 25 min
No. 246006 (worked solution)
7Course to steer: 228 °T
Speed over the ground: 6.2 kn
Time to the mark: 34 min
No. 246007 (worked solution)
8Course to steer: 278 °T
Speed over the ground: 4.4 kn
Time to the mark: 76 min
No. 246008 (worked solution)