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Worksheet 263 · Skill 6

Course to steer

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  1. You are at 110°T, 2.0 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.2 kn. The current sets 194°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 012°T, 1.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.9 kn. The current sets 043°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  

  3. You are at 067°T, 3.0 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.5 kn. The current sets 141°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  

  4. You are at 336°T, 1.7 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 8.4 kn. The current sets 184°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  

  5. You are at 333°T, 1.0 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.0 kn. The current sets 194°T at 1.1 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  

  6. You are at 154°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.2 kn. The current sets 013°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  

  7. You are at 257°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 6.9 kn. The current sets 304°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  

  8. You are at 075°T, 3.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.2 kn. The current sets 357°T at 2.4 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  

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: 122 °T
Speed over the ground: 10.4 kn
Time to the mark: 13 min
No. 263001 (worked solution)
2Course to steer: 144 °T
Speed over the ground: 8.7 kn
Time to the mark: 35 min
No. 263002 (worked solution)
3Course to steer: 167 °T
Speed over the ground: 8.7 kn
Time to the mark: 23 min
No. 263003 (worked solution)
4Course to steer: 201 °T
Speed over the ground: 10.2 kn
Time to the mark: 19 min
No. 263004 (worked solution)
5Course to steer: 036 °T
Speed over the ground: 4.0 kn
Time to the mark: 59 min
No. 263005 (worked solution)
6Course to steer: 293 °T
Speed over the ground: 8.4 kn
Time to the mark: 34 min
No. 263006 (worked solution)
7Course to steer: 048 °T
Speed over the ground: 6.7 kn
Time to the mark: 49 min
No. 263007 (worked solution)
8Course to steer: 164 °T
Speed over the ground: 3.9 kn
Time to the mark: 38 min
No. 263008 (worked solution)