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Worksheet 279 · Skill 6

Course to steer

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  1. You are at 076°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.0 kn. The current sets 047°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 292°T, 3.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.7 kn. The current sets 144°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  

  3. You are at 037°T, 3.0 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.2 kn. The current sets 061°T at 1.7 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  

  4. You are at 159°T, 1.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.8 kn. The current sets 188°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  

  5. You are at 028°T, 2.0 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.7 kn. The current sets 102°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  

  6. You are at 057°T, 3.8 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.1 kn. The current sets 099°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  

  7. You are at 215°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.7 kn. The current sets 206°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  

  8. You are at 042°T, 3.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.3 kn. The current sets 222°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: 272 °T
Speed over the ground: 4.5 kn
Time to the mark: 61 min
No. 279001 (worked solution)
2Course to steer: 078 °T
Speed over the ground: 7.6 kn
Time to the mark: 59 min
No. 279002 (worked solution)
3Course to steer: 170 °T
Speed over the ground: 6.8 kn
Time to the mark: 42 min
No. 279003 (worked solution)
4Course to steer: 099 °T
Speed over the ground: 11.9 kn
Time to the mark: 17 min
No. 279004 (worked solution)
5Course to steer: 139 °T
Speed over the ground: 12.4 kn
Time to the mark: 22 min
No. 279005 (worked solution)
6Course to steer: 169 °T
Speed over the ground: 5.4 kn
Time to the mark: 41 min
No. 279006 (worked solution)
7Course to steer: 327 °T
Speed over the ground: 5.1 kn
Time to the mark: 40 min
No. 279007 (worked solution)
8Course to steer: 123 °T
Speed over the ground: 11.2 kn
Time to the mark: 24 min
No. 279008 (worked solution)