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Worksheet 140 · Skill 6

Course to steer

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  1. You are at 050°T, 3.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.5 kn. The current sets 277°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  

  2. You are at 327°T, 2.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.1 kn. The current sets 127°T at 0.6 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  

  3. You are at 141°T, 1.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.6 kn. The current sets 215°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 030°T, 2.2 nm from Mill stack, bound for Green can "3". Your speed through the water is 9.8 kn. The current sets 359°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  

  5. You are at 042°T, 1.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.7 kn. The current sets 103°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 055°T, 2.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.7 kn. The current sets 254°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  

  7. You are at 017°T, 1.6 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 12.0 kn. The current sets 172°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  

  8. You are at 241°T, 2.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.1 kn. The current sets 012°T at 0.6 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  

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: 138 °T
Speed over the ground: 6.1 kn
Time to the mark: 38 min
No. 140001 (worked solution)
2Course to steer: 212 °T
Speed over the ground: 5.2 kn
Time to the mark: 64 min
No. 140002 (worked solution)
3Course to steer: 076 °T
Speed over the ground: 6.6 kn
Time to the mark: 44 min
No. 140003 (worked solution)
4Course to steer: 337 °T
Speed over the ground: 11.3 kn
Time to the mark: 15 min
No. 140004 (worked solution)
5Course to steer: 160 °T
Speed over the ground: 7.2 kn
Time to the mark: 35 min
No. 140005 (worked solution)
6Course to steer: 114 °T
Speed over the ground: 7.7 kn
Time to the mark: 31 min
No. 140006 (worked solution)
7Course to steer: 298 °T
Speed over the ground: 11.4 kn
Time to the mark: 31 min
No. 140007 (worked solution)
8Course to steer: 291 °T
Speed over the ground: 8.2 kn
Time to the mark: 21 min
No. 140008 (worked solution)