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Worksheet 343 · Skill 6

Course to steer

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  1. You are at 015°T, 2.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.6 kn. The current sets 047°T at 2.3 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  

  2. You are at 253°T, 2.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.2 kn. The current sets 303°T at 2.3 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 050°T, 1.8 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.6 kn. The current sets 272°T at 2.5 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  

  4. You are at 034°T, 2.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.0 kn. The current sets 220°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 159°T, 1.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.7 kn. The current sets 318°T at 2.5 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  

  6. You are at 042°T, 2.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.4 kn. The current sets 232°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  

  7. You are at 110°T, 1.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.6 kn. The current sets 252°T at 2.3 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  

  8. You are at 014°T, 2.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.0 kn. The current sets 057°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  

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: 163 °T
Speed over the ground: 7.9 kn
Time to the mark: 42 min
No. 343001 (worked solution)
2Course to steer: 194 °T
Speed over the ground: 7.8 kn
Time to the mark: 22 min
No. 343002 (worked solution)
3Course to steer: 030 °T
Speed over the ground: 9.7 kn
Time to the mark: 17 min
No. 343003 (worked solution)
4Course to steer: 134 °T
Speed over the ground: 11.1 kn
Time to the mark: 24 min
No. 343004 (worked solution)
5Course to steer: 094 °T
Speed over the ground: 7.1 kn
Time to the mark: 43 min
No. 343005 (worked solution)
6Course to steer: 129 °T
Speed over the ground: 9.2 kn
Time to the mark: 27 min
No. 343006 (worked solution)
7Course to steer: 281 °T
Speed over the ground: 11.7 kn
Time to the mark: 34 min
No. 343007 (worked solution)
8Course to steer: 138 °T
Speed over the ground: 5.1 kn
Time to the mark: 60 min
No. 343008 (worked solution)