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Worksheet 41 · Skill 6

Course to steer

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  1. You are at 052°T, 2.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.6 kn. The current sets 129°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  

  2. You are at 097°T, 1.8 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 12.0 kn. The current sets 156°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  

  3. You are at 216°T, 1.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.6 kn. The current sets 291°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  

  4. You are at 036°T, 2.6 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 10.4 kn. The current sets 102°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 327°T, 1.9 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 5.2 kn. The current sets 169°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  

  6. You are at 324°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.4 kn. The current sets 155°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 041°T, 1.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.6 kn. The current sets 285°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  

  8. You are at 351°T, 2.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.9 kn. The current sets 161°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  

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: 261 °T
Speed over the ground: 9.8 kn
Time to the mark: 45 min
No. 41001 (worked solution)
2Course to steer: 109 °T
Speed over the ground: 13.5 kn
Time to the mark: 12 min
No. 41002 (worked solution)
3Course to steer: 231 °T
Speed over the ground: 11.4 kn
Time to the mark: 13 min
No. 41003 (worked solution)
4Course to steer: 343 °T
Speed over the ground: 9.7 kn
Time to the mark: 29 min
No. 41004 (worked solution)
5Course to steer: 057 °T
Speed over the ground: 4.8 kn
Time to the mark: 61 min
No. 41005 (worked solution)
6Course to steer: 039 °T
Speed over the ground: 9.7 kn
Time to the mark: 25 min
No. 41006 (worked solution)
7Course to steer: 256 °T
Speed over the ground: 9.3 kn
Time to the mark: 36 min
No. 41007 (worked solution)
8Course to steer: 216 °T
Speed over the ground: 7.6 kn
Time to the mark: 43 min
No. 41008 (worked solution)