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Worksheet 133 · Skill 6

Course to steer

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  1. You are at 349°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.3 kn. The current sets 173°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 102°T, 1.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.7 kn. The current sets 184°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 337°T, 0.8 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.7 kn. The current sets 328°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  

  4. You are at 269°T, 2.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.0 kn. The current sets 030°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  

  5. You are at 311°T, 3.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.1 kn. The current sets 350°T at 2.1 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  

  6. You are at 120°T, 1.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.3 kn. The current sets 202°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  

  7. You are at 310°T, 2.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.1 kn. The current sets 242°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  

  8. You are at 038°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 247°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  

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: 267 °T
Speed over the ground: 7.3 kn
Time to the mark: 27 min
No. 133001 (worked solution)
2Course to steer: 119 °T
Speed over the ground: 7.5 kn
Time to the mark: 20 min
No. 133002 (worked solution)
3Course to steer: 267 °T
Speed over the ground: 9.3 kn
Time to the mark: 21 min
No. 133003 (worked solution)
4Course to steer: 258 °T
Speed over the ground: 8.5 kn
Time to the mark: 20 min
No. 133004 (worked solution)
5Course to steer: 184 °T
Speed over the ground: 9.1 kn
Time to the mark: 31 min
No. 133005 (worked solution)
6Course to steer: 080 °T
Speed over the ground: 9.5 kn
Time to the mark: 29 min
No. 133006 (worked solution)
7Course to steer: 185 °T
Speed over the ground: 8.7 kn
Time to the mark: 35 min
No. 133007 (worked solution)
8Course to steer: 270 °T
Speed over the ground: 8.4 kn
Time to the mark: 32 min
No. 133008 (worked solution)