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Worksheet 416 · Skill 6

Course to steer

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  1. You are at 050°T, 3.1 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.6 kn. The current sets 099°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  

  2. You are at 304°T, 4.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.7 kn. The current sets 045°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  

  3. You are at 262°T, 3.5 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 8.5 kn. The current sets 094°T at 1.4 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  

  4. You are at 225°T, 2.4 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.6 kn. The current sets 035°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  

  5. You are at 228°T, 1.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.2 kn. The current sets 084°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  

  6. You are at 303°T, 2.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.4 kn. The current sets 220°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  

  7. You are at 286°T, 3.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.4 kn. The current sets 195°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 304°T, 2.1 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.2 kn. The current sets 103°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  

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: 167 °T
Speed over the ground: 11.1 kn
Time to the mark: 23 min
No. 416001 (worked solution)
2Course to steer: 183 °T
Speed over the ground: 4.9 kn
Time to the mark: 61 min
No. 416002 (worked solution)
3Course to steer: 127 °T
Speed over the ground: 9.7 kn
Time to the mark: 13 min
No. 416003 (worked solution)
4Course to steer: 271 °T
Speed over the ground: 6.7 kn
Time to the mark: 35 min
No. 416004 (worked solution)
5Course to steer: 275 °T
Speed over the ground: 3.2 kn
Time to the mark: 74 min
No. 416005 (worked solution)
6Course to steer: 190 °T
Speed over the ground: 10.7 kn
Time to the mark: 27 min
No. 416006 (worked solution)
7Course to steer: 172 °T
Speed over the ground: 8.6 kn
Time to the mark: 29 min
No. 416007 (worked solution)
8Course to steer: 206 °T
Speed over the ground: 11.0 kn
Time to the mark: 21 min
No. 416008 (worked solution)