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Worksheet 229 · Skill 6

Course to steer

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  1. You are at 299°T, 4.1 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.5 kn. The current sets 252°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 018°T, 3.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.1 kn. The current sets 252°T at 0.5 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  

  3. You are at 149°T, 1.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.9 kn. The current sets 319°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  

  4. You are at 340°T, 1.4 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 7.4 kn. The current sets 172°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  

  5. You are at 046°T, 3.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.4 kn. The current sets 207°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  

  6. You are at 073°T, 2.2 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.5 kn. The current sets 023°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  

  7. You are at 024°T, 2.3 nm from Mill stack, bound for Green can "3". Your speed through the water is 5.7 kn. The current sets 085°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 056°T, 3.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.2 kn. The current sets 250°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  

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: 140 °T
Speed over the ground: 8.9 kn
Time to the mark: 27 min
No. 229001 (worked solution)
2Course to steer: 140 °T
Speed over the ground: 7.9 kn
Time to the mark: 42 min
No. 229002 (worked solution)
3Course to steer: 277 °T
Speed over the ground: 10.2 kn
Time to the mark: 34 min
No. 229003 (worked solution)
4Course to steer: 059 °T
Speed over the ground: 7.0 kn
Time to the mark: 39 min
No. 229004 (worked solution)
5Course to steer: 264 °T
Speed over the ground: 11.9 kn
Time to the mark: 33 min
No. 229005 (worked solution)
6Course to steer: 260 °T
Speed over the ground: 11.0 kn
Time to the mark: 38 min
No. 229006 (worked solution)
7Course to steer: 323 °T
Speed over the ground: 4.9 kn
Time to the mark: 32 min
No. 229007 (worked solution)
8Course to steer: 158 °T
Speed over the ground: 7.2 kn
Time to the mark: 33 min
No. 229008 (worked solution)