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Worksheet 27 · Skill 6

Course to steer

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  1. You are at 204°T, 1.2 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.2 kn. The current sets 335°T at 1.2 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  

  2. You are at 012°T, 1.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.7 kn. The current sets 136°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  

  3. You are at 021°T, 1.8 nm from Mill stack, bound for Red nun "2". Your speed through the water is 5.1 kn. The current sets 185°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 297°T, 2.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 9.1 kn. The current sets 103°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  

  5. You are at 227°T, 2.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.3 kn. The current sets 181°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  

  6. You are at 062°T, 3.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.9 kn. The current sets 066°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 043°T, 3.7 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.4 kn. The current sets 263°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  

  8. You are at 064°T, 2.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.6 kn. The current sets 164°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  

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: 270 °T
Speed over the ground: 11.8 kn
Time to the mark: 25 min
No. 27001 (worked solution)
2Course to steer: 103 °T
Speed over the ground: 11.7 kn
Time to the mark: 29 min
No. 27002 (worked solution)
3Course to steer: 339 °T
Speed over the ground: 3.1 kn
Time to the mark: 54 min
No. 27003 (worked solution)
4Course to steer: 202 °T
Speed over the ground: 9.0 kn
Time to the mark: 24 min
No. 27004 (worked solution)
5Course to steer: 301 °T
Speed over the ground: 5.9 kn
Time to the mark: 37 min
No. 27005 (worked solution)
6Course to steer: 161 °T
Speed over the ground: 6.9 kn
Time to the mark: 28 min
No. 27006 (worked solution)
7Course to steer: 159 °T
Speed over the ground: 7.2 kn
Time to the mark: 40 min
No. 27007 (worked solution)
8Course to steer: 278 °T
Speed over the ground: 5.1 kn
Time to the mark: 85 min
No. 27008 (worked solution)