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Worksheet 36 · Skill 6

Course to steer

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  1. You are at 041°T, 4.6 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.2 kn. The current sets 017°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  

  2. You are at 294°T, 3.1 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.1 kn. The current sets 019°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  

  3. You are at 074°T, 2.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.6 kn. The current sets 030°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  

  4. You are at 339°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.9 kn. The current sets 199°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  

  5. You are at 090°T, 1.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.8 kn. The current sets 285°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  

  6. You are at 170°T, 0.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.0 kn. The current sets 262°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  

  7. You are at 297°T, 2.9 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.1 kn. The current sets 024°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  

  8. You are at 031°T, 2.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.3 kn. The current sets 178°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  

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: 176 °T
Speed over the ground: 3.5 kn
Time to the mark: 87 min
No. 36001 (worked solution)
2Course to steer: 105 °T
Speed over the ground: 9.6 kn
Time to the mark: 43 min
No. 36002 (worked solution)
3Course to steer: 119 °T
Speed over the ground: 11.8 kn
Time to the mark: 17 min
No. 36003 (worked solution)
4Course to steer: 262 °T
Speed over the ground: 9.2 kn
Time to the mark: 34 min
No. 36004 (worked solution)
5Course to steer: 125 °T
Speed over the ground: 6.1 kn
Time to the mark: 30 min
No. 36005 (worked solution)
6Course to steer: 103 °T
Speed over the ground: 6.5 kn
Time to the mark: 34 min
No. 36006 (worked solution)
7Course to steer: 097 °T
Speed over the ground: 5.3 kn
Time to the mark: 74 min
No. 36007 (worked solution)
8Course to steer: 266 °T
Speed over the ground: 10.6 kn
Time to the mark: 34 min
No. 36008 (worked solution)