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Worksheet 159 · Skill 6

Course to steer

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  1. You are at 019°T, 2.2 nm from Mill stack, bound for Bell buoy "HS". Your speed through the water is 7.6 kn. The current sets 186°T at 2.0 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 051°T, 3.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 6.8 kn. The current sets 269°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  

  3. You are at 009°T, 2.5 nm from Mill stack, bound for Red nun "2". Your speed through the water is 7.2 kn. The current sets 271°T at 2.2 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  

  4. You are at 103°T, 2.6 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 6.0 kn. The current sets 204°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 225°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.7 kn. The current sets 054°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 099°T, 1.7 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.4 kn. The current sets 345°T at 1.4 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 082°T, 3.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.1 kn. The current sets 235°T at 2.0 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 059°T, 3.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.7 kn. The current sets 359°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  

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: 034 °T
Speed over the ground: 5.9 kn
Time to the mark: 75 min
No. 159001 (worked solution)
2Course to steer: 129 °T
Speed over the ground: 5.9 kn
Time to the mark: 40 min
No. 159002 (worked solution)
3Course to steer: 318 °T
Speed over the ground: 8.8 kn
Time to the mark: 14 min
No. 159003 (worked solution)
4Course to steer: 359 °T
Speed over the ground: 5.4 kn
Time to the mark: 49 min
No. 159004 (worked solution)
5Course to steer: 301 °T
Speed over the ground: 11.0 kn
Time to the mark: 17 min
No. 159005 (worked solution)
6Course to steer: 119 °T
Speed over the ground: 9.5 kn
Time to the mark: 18 min
No. 159006 (worked solution)
7Course to steer: 101 °T
Speed over the ground: 6.9 kn
Time to the mark: 21 min
No. 159007 (worked solution)
8Course to steer: 156 °T
Speed over the ground: 10.2 kn
Time to the mark: 20 min
No. 159008 (worked solution)