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Worksheet 125 · Skill 6

Course to steer

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  1. You are at 046°T, 3.7 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.1 kn. The current sets 058°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  

  2. You are at 255°T, 3.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 234°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  

  3. You are at 293°T, 2.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.3 kn. The current sets 280°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  

  4. You are at 261°T, 2.8 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.8 kn. The current sets 016°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 270°T, 2.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.3 kn. The current sets 303°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  

  6. You are at 026°T, 3.1 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 7.4 kn. The current sets 183°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  

  7. You are at 310°T, 1.7 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 9.8 kn. The current sets 094°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  

  8. You are at 268°T, 2.2 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.8 kn. The current sets 312°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  

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: 168 °T
Speed over the ground: 4.9 kn
Time to the mark: 53 min
No. 125001 (worked solution)
2Course to steer: 182 °T
Speed over the ground: 6.3 kn
Time to the mark: 22 min
No. 125002 (worked solution)
3Course to steer: 182 °T
Speed over the ground: 6.2 kn
Time to the mark: 34 min
No. 125003 (worked solution)
4Course to steer: 261 °T
Speed over the ground: 11.4 kn
Time to the mark: 14 min
No. 125004 (worked solution)
5Course to steer: 178 °T
Speed over the ground: 8.1 kn
Time to the mark: 23 min
No. 125005 (worked solution)
6Course to steer: 079 °T
Speed over the ground: 7.2 kn
Time to the mark: 20 min
No. 125006 (worked solution)
7Course to steer: 014 °T
Speed over the ground: 10.1 kn
Time to the mark: 36 min
No. 125007 (worked solution)
8Course to steer: 251 °T
Speed over the ground: 9.9 kn
Time to the mark: 20 min
No. 125008 (worked solution)