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Worksheet 110 · Skill 6

Course to steer

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  1. You are at 051°T, 3.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.5 kn. The current sets 003°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 274°T, 2.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.8 kn. The current sets 228°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  

  3. You are at 026°T, 2.2 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 10.3 kn. The current sets 201°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 038°T, 2.8 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.6 kn. The current sets 232°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 288°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.7 kn. The current sets 219°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  

  6. You are at 253°T, 1.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.1 kn. The current sets 011°T at 2.0 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 278°T, 1.7 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.0 kn. The current sets 156°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 268°T, 2.1 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.0 kn. The current sets 142°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  

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: 170 °T
Speed over the ground: 4.5 kn
Time to the mark: 57 min
No. 110001 (worked solution)
2Course to steer: 272 °T
Speed over the ground: 12.2 kn
Time to the mark: 12 min
No. 110002 (worked solution)
3Course to steer: 254 °T
Speed over the ground: 11.2 kn
Time to the mark: 37 min
No. 110003 (worked solution)
4Course to steer: 092 °T
Speed over the ground: 4.2 kn
Time to the mark: 35 min
No. 110004 (worked solution)
5Course to steer: 288 °T
Speed over the ground: 12.3 kn
Time to the mark: 10 min
No. 110005 (worked solution)
6Course to steer: 212 °T
Speed over the ground: 6.3 kn
Time to the mark: 33 min
No. 110006 (worked solution)
7Course to steer: 218 °T
Speed over the ground: 12.0 kn
Time to the mark: 19 min
No. 110007 (worked solution)
8Course to steer: 207 °T
Speed over the ground: 11.8 kn
Time to the mark: 13 min
No. 110008 (worked solution)