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Worksheet 266 · Skill 6

Course to steer

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  1. You are at 031°T, 2.3 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.3 kn. The current sets 043°T at 0.7 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  

  2. You are at 052°T, 2.8 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.0 kn. The current sets 049°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 018°T, 2.7 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 6.2 kn. The current sets 240°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  

  4. You are at 251°T, 2.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.3 kn. The current sets 150°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  

  5. You are at 014°T, 3.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.8 kn. The current sets 194°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 032°T, 3.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.5 kn. The current sets 117°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  

  7. You are at 118°T, 2.0 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.7 kn. The current sets 254°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 129°T, 1.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.8 kn. The current sets 162°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: 108 °T
Speed over the ground: 7.6 kn
Time to the mark: 23 min
No. 266001 (worked solution)
2Course to steer: 352 °T
Speed over the ground: 11.1 kn
Time to the mark: 11 min
No. 266002 (worked solution)
3Course to steer: 080 °T
Speed over the ground: 5.4 kn
Time to the mark: 32 min
No. 266003 (worked solution)
4Course to steer: 225 °T
Speed over the ground: 8.9 kn
Time to the mark: 20 min
No. 266004 (worked solution)
5Course to steer: 118 °T
Speed over the ground: 9.4 kn
Time to the mark: 39 min
No. 266005 (worked solution)
6Course to steer: 170 °T
Speed over the ground: 9.4 kn
Time to the mark: 35 min
No. 266006 (worked solution)
7Course to steer: 109 °T
Speed over the ground: 4.6 kn
Time to the mark: 29 min
No. 266007 (worked solution)
8Course to steer: 080 °T
Speed over the ground: 11.0 kn
Time to the mark: 25 min
No. 266008 (worked solution)