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Worksheet 309 · Skill 6

Course to steer

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  1. You are at 007°T, 1.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.3 kn. The current sets 028°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, 2.1 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 8.9 kn. The current sets 003°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 337°T, 2.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.8 kn. The current sets 087°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  

  4. You are at 049°T, 2.4 nm from Mill stack, bound for Green can "3". Your speed through the water is 11.5 kn. The current sets 268°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  

  5. You are at 088°T, 2.7 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 9.0 kn. The current sets 145°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  

  6. You are at 257°T, 2.2 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.7 kn. The current sets 240°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 293°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.5 kn. The current sets 199°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  

  8. You are at 340°T, 0.9 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 8.3 kn. The current sets 209°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: 130 °T
Speed over the ground: 8.2 kn
Time to the mark: 37 min
No. 309001 (worked solution)
2Course to steer: 307 °T
Speed over the ground: 9.9 kn
Time to the mark: 26 min
No. 309002 (worked solution)
3Course to steer: 217 °T
Speed over the ground: 8.0 kn
Time to the mark: 43 min
No. 309003 (worked solution)
4Course to steer: 340 °T
Speed over the ground: 12.3 kn
Time to the mark: 17 min
No. 309004 (worked solution)
5Course to steer: 282 °T
Speed over the ground: 8.3 kn
Time to the mark: 45 min
No. 309005 (worked solution)
6Course to steer: 293 °T
Speed over the ground: 8.2 kn
Time to the mark: 20 min
No. 309006 (worked solution)
7Course to steer: 299 °T
Speed over the ground: 7.5 kn
Time to the mark: 19 min
No. 309007 (worked solution)
8Course to steer: 307 °T
Speed over the ground: 8.3 kn
Time to the mark: 45 min
No. 309008 (worked solution)