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Worksheet 606 · Skill 6

Course to steer

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  1. You are at 319°T, 2.7 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.9 kn. The current sets 062°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  

  2. You are at 348°T, 2.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.3 kn. The current sets 131°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  

  3. You are at 060°T, 1.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.6 kn. The current sets 166°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 209°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.9 kn. The current sets 292°T at 2.3 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 040°T, 2.1 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.2 kn. The current sets 278°T at 2.3 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  

  6. You are at 049°T, 4.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.7 kn. The current sets 236°T at 1.7 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  

  7. You are at 299°T, 4.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.3 kn. The current sets 260°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 079°T, 3.0 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.5 kn. The current sets 095°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  

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: 208 °T
Speed over the ground: 9.0 kn
Time to the mark: 36 min
No. 606001 (worked solution)
2Course to steer: 215 °T
Speed over the ground: 10.4 kn
Time to the mark: 36 min
No. 606002 (worked solution)
3Course to steer: 120 °T
Speed over the ground: 12.2 kn
Time to the mark: 19 min
No. 606003 (worked solution)
4Course to steer: 309 °T
Speed over the ground: 10.1 kn
Time to the mark: 21 min
No. 606004 (worked solution)
5Course to steer: 127 °T
Speed over the ground: 3.4 kn
Time to the mark: 76 min
No. 606005 (worked solution)
6Course to steer: 166 °T
Speed over the ground: 12.4 kn
Time to the mark: 23 min
No. 606006 (worked solution)
7Course to steer: 164 °T
Speed over the ground: 11.2 kn
Time to the mark: 24 min
No. 606007 (worked solution)
8Course to steer: 169 °T
Speed over the ground: 6.7 kn
Time to the mark: 24 min
No. 606008 (worked solution)