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Worksheet 25 · Skill 6

Course to steer

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  1. You are at 011°T, 3.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.1 kn. The current sets 023°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  

  2. You are at 207°T, 2.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 12.0 kn. The current sets 177°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  

  3. You are at 301°T, 1.2 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.5 kn. The current sets 125°T at 2.5 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 134°T, 1.3 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.5 kn. The current sets 311°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  

  5. You are at 038°T, 3.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.6 kn. The current sets 314°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  

  6. You are at 071°T, 3.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.5 kn. The current sets 230°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  

  7. You are at 135°T, 2.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.0 kn. The current sets 231°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  

  8. You are at 335°T, 2.5 nm from Mill stack, bound for Green can "3". Your speed through the water is 8.3 kn. The current sets 099°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  

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: 132 °T
Speed over the ground: 10.8 kn
Time to the mark: 34 min
No. 25001 (worked solution)
2Course to steer: 261 °T
Speed over the ground: 12.2 kn
Time to the mark: 10 min
No. 25002 (worked solution)
3Course to steer: 264 °T
Speed over the ground: 9.7 kn
Time to the mark: 28 min
No. 25003 (worked solution)
4Course to steer: 030 °T
Speed over the ground: 6.0 kn
Time to the mark: 49 min
No. 25004 (worked solution)
5Course to steer: 153 °T
Speed over the ground: 7.9 kn
Time to the mark: 37 min
No. 25005 (worked solution)
6Course to steer: 115 °T
Speed over the ground: 9.8 kn
Time to the mark: 17 min
No. 25006 (worked solution)
7Course to steer: 271 °T
Speed over the ground: 8.4 kn
Time to the mark: 35 min
No. 25007 (worked solution)
8Course to steer: 011 °T
Speed over the ground: 8.7 kn
Time to the mark: 18 min
No. 25008 (worked solution)