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Worksheet 113 · Skill 6

Course to steer

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  1. You are at 001°T, 1.8 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.9 kn. The current sets 181°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  

  2. You are at 178°T, 1.0 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.2 kn. The current sets 020°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  

  3. You are at 131°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 9.1 kn. The current sets 081°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  

  4. You are at 018°T, 3.7 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.0 kn. The current sets 267°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  

  5. You are at 074°T, 2.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.2 kn. The current sets 205°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  

  6. You are at 305°T, 4.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.4 kn. The current sets 134°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  

  7. You are at 031°T, 2.9 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 6.1 kn. The current sets 084°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  

  8. You are at 305°T, 3.3 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 8.3 kn. The current sets 031°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: 101 °T
Speed over the ground: 10.5 kn
Time to the mark: 35 min
No. 113001 (worked solution)
2Course to steer: 106 °T
Speed over the ground: 7.4 kn
Time to the mark: 35 min
No. 113002 (worked solution)
3Course to steer: 284 °T
Speed over the ground: 7.0 kn
Time to the mark: 42 min
No. 113003 (worked solution)
4Course to steer: 148 °T
Speed over the ground: 5.7 kn
Time to the mark: 65 min
No. 113004 (worked solution)
5Course to steer: 153 °T
Speed over the ground: 12.5 kn
Time to the mark: 14 min
No. 113005 (worked solution)
6Course to steer: 187 °T
Speed over the ground: 6.9 kn
Time to the mark: 48 min
No. 113006 (worked solution)
7Course to steer: 141 °T
Speed over the ground: 7.7 kn
Time to the mark: 40 min
No. 113007 (worked solution)
8Course to steer: 168 °T
Speed over the ground: 7.7 kn
Time to the mark: 28 min
No. 113008 (worked solution)