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Worksheet 132 · Skill 6

Course to steer

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  1. You are at 067°T, 2.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.6 kn. The current sets 033°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 282°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.2 kn. The current sets 299°T at 0.9 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 055°T, 2.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.6 kn. The current sets 235°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 123°T, 1.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.8 kn. The current sets 041°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  

  5. You are at 211°T, 2.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.9 kn. The current sets 207°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  

  6. You are at 050°T, 2.5 nm from Mill stack, bound for Green can "1". Your speed through the water is 12.0 kn. The current sets 345°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  

  7. You are at 276°T, 1.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.5 kn. The current sets 003°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 113°T, 2.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.8 kn. The current sets 135°T at 0.8 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  

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: 120 °T
Speed over the ground: 10.7 kn
Time to the mark: 20 min
No. 132001 (worked solution)
2Course to steer: 193 °T
Speed over the ground: 10.0 kn
Time to the mark: 23 min
No. 132002 (worked solution)
3Course to steer: 272 °T
Speed over the ground: 12.7 kn
Time to the mark: 26 min
No. 132003 (worked solution)
4Course to steer: 276 °T
Speed over the ground: 10.4 kn
Time to the mark: 37 min
No. 132004 (worked solution)
5Course to steer: 336 °T
Speed over the ground: 5.1 kn
Time to the mark: 44 min
No. 132005 (worked solution)
6Course to steer: 283 °T
Speed over the ground: 13.2 kn
Time to the mark: 18 min
No. 132006 (worked solution)
7Course to steer: 260 °T
Speed over the ground: 10.3 kn
Time to the mark: 22 min
No. 132007 (worked solution)
8Course to steer: 356 °T
Speed over the ground: 5.2 kn
Time to the mark: 54 min
No. 132008 (worked solution)