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Worksheet 156 · Skill 6

Course to steer

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  1. You are at 158°T, 1.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.8 kn. The current sets 346°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  

  2. You are at 086°T, 1.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.2 kn. The current sets 078°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  

  3. You are at 057°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.7 kn. The current sets 216°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 053°T, 1.5 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 206°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  

  5. You are at 046°T, 4.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.9 kn. The current sets 118°T at 2.3 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  

  6. You are at 277°T, 3.7 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.8 kn. The current sets 083°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  

  7. You are at 073°T, 2.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.9 kn. The current sets 358°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  

  8. You are at 301°T, 1.8 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 5.6 kn. The current sets 198°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  

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: 100 °T
Speed over the ground: 11.5 kn
Time to the mark: 20 min
No. 156001 (worked solution)
2Course to steer: 128 °T
Speed over the ground: 6.8 kn
Time to the mark: 25 min
No. 156002 (worked solution)
3Course to steer: 265 °T
Speed over the ground: 13.2 kn
Time to the mark: 31 min
No. 156003 (worked solution)
4Course to steer: 117 °T
Speed over the ground: 5.8 kn
Time to the mark: 40 min
No. 156004 (worked solution)
5Course to steer: 153 °T
Speed over the ground: 12.9 kn
Time to the mark: 20 min
No. 156005 (worked solution)
6Course to steer: 140 °T
Speed over the ground: 10.3 kn
Time to the mark: 17 min
No. 156006 (worked solution)
7Course to steer: 156 °T
Speed over the ground: 8.6 kn
Time to the mark: 21 min
No. 156007 (worked solution)
8Course to steer: 321 °T
Speed over the ground: 5.1 kn
Time to the mark: 52 min
No. 156008 (worked solution)