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Worksheet 158 · Skill 6

Course to steer

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  1. You are at 020°T, 1.4 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 8.1 kn. The current sets 182°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  

  2. You are at 278°T, 2.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.9 kn. The current sets 174°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  

  3. You are at 159°T, 1.7 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.9 kn. The current sets 212°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 123°T, 1.9 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.0 kn. The current sets 049°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  

  5. You are at 343°T, 1.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.8 kn. The current sets 276°T at 1.2 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 241°T, 2.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.3 kn. The current sets 200°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  

  7. You are at 041°T, 1.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.6 kn. The current sets 144°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  

  8. You are at 106°T, 1.9 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.6 kn. The current sets 026°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  

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: 309 °T
Speed over the ground: 7.0 kn
Time to the mark: 51 min
No. 158001 (worked solution)
2Course to steer: 203 °T
Speed over the ground: 8.9 kn
Time to the mark: 25 min
No. 158002 (worked solution)
3Course to steer: 081 °T
Speed over the ground: 7.2 kn
Time to the mark: 31 min
No. 158003 (worked solution)
4Course to steer: 004 °T
Speed over the ground: 8.5 kn
Time to the mark: 34 min
No. 158004 (worked solution)
5Course to steer: 205 °T
Speed over the ground: 7.3 kn
Time to the mark: 38 min
No. 158005 (worked solution)
6Course to steer: 309 °T
Speed over the ground: 6.9 kn
Time to the mark: 24 min
No. 158006 (worked solution)
7Course to steer: 107 °T
Speed over the ground: 6.3 kn
Time to the mark: 46 min
No. 158007 (worked solution)
8Course to steer: 102 °T
Speed over the ground: 11.5 kn
Time to the mark: 20 min
No. 158008 (worked solution)