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Worksheet 543 · Skill 6

Course to steer

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  1. You are at 050°T, 3.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.3 kn. The current sets 318°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  

  2. You are at 304°T, 2.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.7 kn. The current sets 145°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  

  3. You are at 001°T, 2.7 nm from Mill stack, bound for Bell buoy "HS". Your speed through the water is 9.3 kn. The current sets 327°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 164°T, 0.8 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.3 kn. The current sets 045°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  

  5. You are at 105°T, 2.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.7 kn. The current sets 025°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  

  6. You are at 299°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.5 kn. The current sets 219°T at 2.2 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  

  7. You are at 330°T, 1.0 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 6.3 kn. The current sets 023°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  

  8. You are at 349°T, 1.7 nm from Heron Point Light, bound for Green can "1". Your speed through the water is 11.9 kn. The current sets 125°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  

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: 161 °T
Speed over the ground: 7.1 kn
Time to the mark: 36 min
No. 543001 (worked solution)
2Course to steer: 084 °T
Speed over the ground: 8.2 kn
Time to the mark: 44 min
No. 543002 (worked solution)
3Course to steer: 066 °T
Speed over the ground: 9.3 kn
Time to the mark: 49 min
No. 543003 (worked solution)
4Course to steer: 262 °T
Speed over the ground: 6.8 kn
Time to the mark: 50 min
No. 543004 (worked solution)
5Course to steer: 256 °T
Speed over the ground: 5.6 kn
Time to the mark: 76 min
No. 543005 (worked solution)
6Course to steer: 295 °T
Speed over the ground: 7.3 kn
Time to the mark: 21 min
No. 543006 (worked solution)
7Course to steer: 009 °T
Speed over the ground: 8.3 kn
Time to the mark: 44 min
No. 543007 (worked solution)
8Course to steer: 093 °T
Speed over the ground: 13.5 kn
Time to the mark: 9 min
No. 543008 (worked solution)