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Worksheet 807 · Skill 6

Course to steer

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  1. You are at 142°T, 3.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.1 kn. The current sets 356°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  

  2. You are at 155°T, 2.9 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.6 kn. The current sets 052°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  

  3. You are at 123°T, 1.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.7 kn. The current sets 030°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  

  4. You are at 110°T, 2.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.3 kn. The current sets 159°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 359°T, 1.5 nm from Mill stack, bound for Red nun "2". Your speed through the water is 6.5 kn. The current sets 204°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  

  6. You are at 018°T, 1.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.1 kn. The current sets 052°T at 1.9 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  

  7. You are at 099°T, 2.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 6.1 kn. The current sets 224°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  

  8. You are at 007°T, 2.3 nm from Mill stack, bound for Red nun "2". Your speed through the water is 5.2 kn. The current sets 049°T at 0.5 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: 070 °T
Speed over the ground: 9.7 kn
Time to the mark: 16 min
No. 807001 (worked solution)
2Course to steer: 267 °T
Speed over the ground: 5.0 kn
Time to the mark: 50 min
No. 807002 (worked solution)
3Course to steer: 120 °T
Speed over the ground: 8.7 kn
Time to the mark: 17 min
No. 807003 (worked solution)
4Course to steer: 081 °T
Speed over the ground: 7.5 kn
Time to the mark: 28 min
No. 807004 (worked solution)
5Course to steer: 349 °T
Speed over the ground: 4.7 kn
Time to the mark: 32 min
No. 807005 (worked solution)
6Course to steer: 258 °T
Speed over the ground: 5.5 kn
Time to the mark: 43 min
No. 807006 (worked solution)
7Course to steer: 079 °T
Speed over the ground: 4.7 kn
Time to the mark: 38 min
No. 807007 (worked solution)
8Course to steer: 308 °T
Speed over the ground: 5.1 kn
Time to the mark: 24 min
No. 807008 (worked solution)