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Worksheet 68 · Skill 6

Course to steer

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  1. You are at 153°T, 2.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.2 kn. The current sets 125°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  

  2. You are at 043°T, 2.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.6 kn. The current sets 162°T at 1.8 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  

  3. You are at 290°T, 3.3 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.3 kn. The current sets 026°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  

  4. You are at 029°T, 2.1 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 9.4 kn. The current sets 019°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 227°T, 2.5 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.8 kn. The current sets 270°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 318°T, 1.6 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 11.2 kn. The current sets 251°T at 2.4 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 029°T, 2.6 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.0 kn. The current sets 167°T at 1.7 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  

  8. You are at 172°T, 1.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.3 kn. The current sets 110°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  

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: 284 °T
Speed over the ground: 7.9 kn
Time to the mark: 22 min
No. 68001 (worked solution)
2Course to steer: 267 °T
Speed over the ground: 10.3 kn
Time to the mark: 33 min
No. 68002 (worked solution)
3Course to steer: 093 °T
Speed over the ground: 11.7 kn
Time to the mark: 36 min
No. 68003 (worked solution)
4Course to steer: 266 °T
Speed over the ground: 8.8 kn
Time to the mark: 50 min
No. 68004 (worked solution)
5Course to steer: 048 °T
Speed over the ground: 4.8 kn
Time to the mark: 86 min
No. 68005 (worked solution)
6Course to steer: 288 °T
Speed over the ground: 13.2 kn
Time to the mark: 27 min
No. 68006 (worked solution)
7Course to steer: 133 °T
Speed over the ground: 7.5 kn
Time to the mark: 38 min
No. 68007 (worked solution)
8Course to steer: 253 °T
Speed over the ground: 7.4 kn
Time to the mark: 34 min
No. 68008 (worked solution)