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Worksheet 119 · Skill 6

Course to steer

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  1. You are at 015°T, 1.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.2 kn. The current sets 350°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  

  2. You are at 032°T, 1.7 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 8.6 kn. The current sets 055°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  

  3. You are at 088°T, 1.4 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 10.6 kn. The current sets 171°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  

  4. You are at 032°T, 3.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.4 kn. The current sets 089°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  

  5. You are at 264°T, 2.5 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.1 kn. The current sets 332°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 255°T, 1.8 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.9 kn. The current sets 227°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  

  7. You are at 176°T, 1.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.3 kn. The current sets 144°T at 1.0 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 213°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 9.2 kn. The current sets 013°T at 0.6 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: 241 °T
Speed over the ground: 7.8 kn
Time to the mark: 40 min
No. 119001 (worked solution)
2Course to steer: 283 °T
Speed over the ground: 7.5 kn
Time to the mark: 50 min
No. 119002 (worked solution)
3Course to steer: 030 °T
Speed over the ground: 9.1 kn
Time to the mark: 24 min
No. 119003 (worked solution)
4Course to steer: 142 °T
Speed over the ground: 6.0 kn
Time to the mark: 52 min
No. 119004 (worked solution)
5Course to steer: 180 °T
Speed over the ground: 4.4 kn
Time to the mark: 32 min
No. 119005 (worked solution)
6Course to steer: 207 °T
Speed over the ground: 10.3 kn
Time to the mark: 14 min
No. 119006 (worked solution)
7Course to steer: 094 °T
Speed over the ground: 8.0 kn
Time to the mark: 27 min
No. 119007 (worked solution)
8Course to steer: 299 °T
Speed over the ground: 9.4 kn
Time to the mark: 22 min
No. 119008 (worked solution)