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Worksheet 327 · Skill 6

Course to steer

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  1. You are at 322°T, 1.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.3 kn. The current sets 154°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  

  2. You are at 336°T, 1.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.7 kn. The current sets 181°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  

  3. You are at 023°T, 1.3 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.1 kn. The current sets 043°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  

  4. You are at 330°T, 2.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.4 kn. The current sets 105°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  

  5. You are at 256°T, 3.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.7 kn. The current sets 149°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  

  6. You are at 336°T, 2.0 nm from Mill stack, bound for Green can "3". Your speed through the water is 6.4 kn. The current sets 246°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  

  7. You are at 108°T, 2.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.0 kn. The current sets 249°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  

  8. You are at 040°T, 3.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.0 kn. The current sets 289°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  

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: 221 °T
Speed over the ground: 8.7 kn
Time to the mark: 34 min
No. 327001 (worked solution)
2Course to steer: 214 °T
Speed over the ground: 11.8 kn
Time to the mark: 23 min
No. 327002 (worked solution)
3Course to steer: 096 °T
Speed over the ground: 9.1 kn
Time to the mark: 23 min
No. 327003 (worked solution)
4Course to steer: 206 °T
Speed over the ground: 8.3 kn
Time to the mark: 43 min
No. 327004 (worked solution)
5Course to steer: 197 °T
Speed over the ground: 7.6 kn
Time to the mark: 19 min
No. 327005 (worked solution)
6Course to steer: 029 °T
Speed over the ground: 5.2 kn
Time to the mark: 34 min
No. 327006 (worked solution)
7Course to steer: 104 °T
Speed over the ground: 6.4 kn
Time to the mark: 23 min
No. 327007 (worked solution)
8Course to steer: 140 °T
Speed over the ground: 7.3 kn
Time to the mark: 36 min
No. 327008 (worked solution)