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Worksheet 300 · Skill 6

Course to steer

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  1. You are at 215°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.6 kn. The current sets 023°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  

  2. You are at 334°T, 1.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 9.2 kn. The current sets 075°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  

  3. You are at 006°T, 3.6 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.1 kn. The current sets 048°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 081°T, 2.6 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.0 kn. The current sets 228°T at 0.6 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  

  5. You are at 148°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.0 kn. The current sets 154°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 180°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.7 kn. The current sets 176°T at 0.8 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 004°T, 1.4 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 7.6 kn. The current sets 055°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  

  8. You are at 330°T, 2.9 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 8.4 kn. The current sets 288°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: 286 °T
Speed over the ground: 5.7 kn
Time to the mark: 35 min
No. 300001 (worked solution)
2Course to steer: 218 °T
Speed over the ground: 7.8 kn
Time to the mark: 36 min
No. 300002 (worked solution)
3Course to steer: 147 °T
Speed over the ground: 9.0 kn
Time to the mark: 42 min
No. 300003 (worked solution)
4Course to steer: 131 °T
Speed over the ground: 7.0 kn
Time to the mark: 22 min
No. 300004 (worked solution)
5Course to steer: 280 °T
Speed over the ground: 6.5 kn
Time to the mark: 55 min
No. 300005 (worked solution)
6Course to steer: 306 °T
Speed over the ground: 8.2 kn
Time to the mark: 30 min
No. 300006 (worked solution)
7Course to steer: 279 °T
Speed over the ground: 7.0 kn
Time to the mark: 56 min
No. 300007 (worked solution)
8Course to steer: 272 °T
Speed over the ground: 10.7 kn
Time to the mark: 27 min
No. 300008 (worked solution)