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Worksheet 623 · Skill 6

Course to steer

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  1. You are at 011°T, 2.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.0 kn. The current sets 052°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  

  2. You are at 196°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.3 kn. The current sets 277°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  

  3. You are at 050°T, 4.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.5 kn. The current sets 248°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 250°T, 2.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 10.7 kn. The current sets 315°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  

  5. You are at 062°T, 1.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.7 kn. The current sets 290°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  

  6. You are at 019°T, 1.1 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 6.9 kn. The current sets 068°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  

  7. You are at 349°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.8 kn. The current sets 163°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 008°T, 1.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.7 kn. The current sets 301°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  

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: 126 °T
Speed over the ground: 7.2 kn
Time to the mark: 50 min
No. 623001 (worked solution)
2Course to steer: 305 °T
Speed over the ground: 7.1 kn
Time to the mark: 32 min
No. 623002 (worked solution)
3Course to steer: 139 °T
Speed over the ground: 10.2 kn
Time to the mark: 23 min
No. 623003 (worked solution)
4Course to steer: 272 °T
Speed over the ground: 12.2 kn
Time to the mark: 13 min
No. 623004 (worked solution)
5Course to steer: 259 °T
Speed over the ground: 11.6 kn
Time to the mark: 30 min
No. 623005 (worked solution)
6Course to steer: 030 °T
Speed over the ground: 7.5 kn
Time to the mark: 27 min
No. 623006 (worked solution)
7Course to steer: 266 °T
Speed over the ground: 6.7 kn
Time to the mark: 29 min
No. 623007 (worked solution)
8Course to steer: 247 °T
Speed over the ground: 11.5 kn
Time to the mark: 27 min
No. 623008 (worked solution)