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Worksheet 184 · Skill 6

Course to steer

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  1. You are at 045°T, 1.8 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.4 kn. The current sets 150°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  

  2. You are at 079°T, 2.8 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.1 kn. The current sets 144°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 030°T, 2.2 nm from Mill stack, bound for Green can "1". Your speed through the water is 10.5 kn. The current sets 220°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  

  4. You are at 100°T, 1.9 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.6 kn. The current sets 173°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  

  5. You are at 024°T, 2.2 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 11.8 kn. The current sets 244°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  

  6. You are at 060°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.8 kn. The current sets 044°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 156°T, 1.5 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 030°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 046°T, 2.3 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 7.7 kn. The current sets 160°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  

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: 264 °T
Speed over the ground: 10.0 kn
Time to the mark: 37 min
No. 184001 (worked solution)
2Course to steer: 102 °T
Speed over the ground: 6.0 kn
Time to the mark: 30 min
No. 184002 (worked solution)
3Course to steer: 300 °T
Speed over the ground: 10.8 kn
Time to the mark: 17 min
No. 184003 (worked solution)
4Course to steer: 086 °T
Speed over the ground: 11.7 kn
Time to the mark: 19 min
No. 184004 (worked solution)
5Course to steer: 283 °T
Speed over the ground: 13.3 kn
Time to the mark: 32 min
No. 184005 (worked solution)
6Course to steer: 244 °T
Speed over the ground: 3.6 kn
Time to the mark: 118 min
No. 184006 (worked solution)
7Course to steer: 243 °T
Speed over the ground: 4.4 kn
Time to the mark: 52 min
No. 184007 (worked solution)
8Course to steer: 047 °T
Speed over the ground: 7.2 kn
Time to the mark: 20 min
No. 184008 (worked solution)