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Worksheet 365 · Skill 6

Course to steer

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  1. You are at 263°T, 2.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.8 kn. The current sets 082°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  

  2. You are at 068°T, 1.9 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.6 kn. The current sets 247°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 059°T, 1.0 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.7 kn. The current sets 320°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  

  4. You are at 252°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.5 kn. The current sets 356°T at 1.1 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 231°T, 2.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.9 kn. The current sets 218°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  

  6. You are at 081°T, 2.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.5 kn. The current sets 223°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  

  7. You are at 242°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.2 kn. The current sets 164°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  

  8. You are at 305°T, 3.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.4 kn. The current sets 292°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  

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: 044 °T
Speed over the ground: 13.1 kn
Time to the mark: 28 min
No. 365001 (worked solution)
2Course to steer: 016 °T
Speed over the ground: 9.7 kn
Time to the mark: 19 min
No. 365002 (worked solution)
3Course to steer: 108 °T
Speed over the ground: 8.5 kn
Time to the mark: 34 min
No. 365003 (worked solution)
4Course to steer: 301 °T
Speed over the ground: 12.2 kn
Time to the mark: 12 min
No. 365004 (worked solution)
5Course to steer: 302 °T
Speed over the ground: 6.0 kn
Time to the mark: 33 min
No. 365005 (worked solution)
6Course to steer: 092 °T
Speed over the ground: 4.8 kn
Time to the mark: 43 min
No. 365006 (worked solution)
7Course to steer: 278 °T
Speed over the ground: 8.0 kn
Time to the mark: 28 min
No. 365007 (worked solution)
8Course to steer: 171 °T
Speed over the ground: 5.7 kn
Time to the mark: 55 min
No. 365008 (worked solution)