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Worksheet 114 · Skill 6

Course to steer

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  1. You are at 043°T, 3.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.9 kn. The current sets 105°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  

  2. You are at 356°T, 1.7 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 7.1 kn. The current sets 258°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 345°T, 3.1 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 7.9 kn. The current sets 347°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  

  4. You are at 337°T, 1.8 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.8 kn. The current sets 191°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 029°T, 1.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.5 kn. The current sets 218°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  

  6. You are at 220°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.9 kn. The current sets 202°T at 1.3 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  

  7. You are at 028°T, 1.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.3 kn. The current sets 059°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 290°T, 4.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.4 kn. The current sets 058°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: 258 °T
Speed over the ground: 6.4 kn
Time to the mark: 70 min
No. 114001 (worked solution)
2Course to steer: 302 °T
Speed over the ground: 8.2 kn
Time to the mark: 39 min
No. 114002 (worked solution)
3Course to steer: 031 °T
Speed over the ground: 9.4 kn
Time to the mark: 26 min
No. 114003 (worked solution)
4Course to steer: 084 °T
Speed over the ground: 11.4 kn
Time to the mark: 25 min
No. 114004 (worked solution)
5Course to steer: 268 °T
Speed over the ground: 6.3 kn
Time to the mark: 51 min
No. 114005 (worked solution)
6Course to steer: 302 °T
Speed over the ground: 5.8 kn
Time to the mark: 41 min
No. 114006 (worked solution)
7Course to steer: 113 °T
Speed over the ground: 10.7 kn
Time to the mark: 29 min
No. 114007 (worked solution)
8Course to steer: 193 °T
Speed over the ground: 4.4 kn
Time to the mark: 62 min
No. 114008 (worked solution)