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Worksheet 463 · Skill 6

Course to steer

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  1. You are at 321°T, 2.7 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 10.1 kn. The current sets 301°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  

  2. You are at 068°T, 2.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 10.9 kn. The current sets 300°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 046°T, 2.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.3 kn. The current sets 234°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  

  4. You are at 307°T, 2.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.4 kn. The current sets 269°T at 0.5 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  

  5. You are at 092°T, 3.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.9 kn. The current sets 171°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 099°T, 2.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.1 kn. The current sets 158°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  

  7. You are at 059°T, 2.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.2 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  

  8. You are at 040°T, 4.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.6 kn. The current sets 011°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  

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: 168 °T
Speed over the ground: 8.7 kn
Time to the mark: 26 min
No. 463001 (worked solution)
2Course to steer: 083 °T
Speed over the ground: 9.5 kn
Time to the mark: 14 min
No. 463002 (worked solution)
3Course to steer: 268 °T
Speed over the ground: 6.2 kn
Time to the mark: 50 min
No. 463003 (worked solution)
4Course to steer: 194 °T
Speed over the ground: 6.5 kn
Time to the mark: 45 min
No. 463004 (worked solution)
5Course to steer: 093 °T
Speed over the ground: 11.2 kn
Time to the mark: 13 min
No. 463005 (worked solution)
6Course to steer: 099 °T
Speed over the ground: 6.7 kn
Time to the mark: 21 min
No. 463006 (worked solution)
7Course to steer: 266 °T
Speed over the ground: 11.4 kn
Time to the mark: 35 min
No. 463007 (worked solution)
8Course to steer: 172 °T
Speed over the ground: 6.6 kn
Time to the mark: 49 min
No. 463008 (worked solution)