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Worksheet 15 · Skill 6

Course to steer

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  1. You are at 059°T, 2.5 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.3 kn. The current sets 223°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  

  2. You are at 037°T, 2.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.3 kn. The current sets 047°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  

  3. You are at 040°T, 0.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.9 kn. The current sets 130°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  

  4. You are at 008°T, 1.4 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 8.6 kn. The current sets 336°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  

  5. You are at 300°T, 4.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.9 kn. The current sets 033°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  

  6. You are at 309°T, 1.8 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 10.5 kn. The current sets 000°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  

  7. You are at 277°T, 2.3 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.2 kn. The current sets 241°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  

  8. You are at 353°T, 0.9 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 5.2 kn. The current sets 249°T at 0.5 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: 147 °T
Speed over the ground: 7.6 kn
Time to the mark: 29 min
No. 15001 (worked solution)
2Course to steer: 156 °T
Speed over the ground: 10.9 kn
Time to the mark: 24 min
No. 15002 (worked solution)
3Course to steer: 263 °T
Speed over the ground: 11.0 kn
Time to the mark: 33 min
No. 15003 (worked solution)
4Course to steer: 014 °T
Speed over the ground: 10.4 kn
Time to the mark: 31 min
No. 15004 (worked solution)
5Course to steer: 190 °T
Speed over the ground: 5.0 kn
Time to the mark: 63 min
No. 15005 (worked solution)
6Course to steer: 092 °T
Speed over the ground: 10.5 kn
Time to the mark: 31 min
No. 15006 (worked solution)
7Course to steer: 187 °T
Speed over the ground: 8.0 kn
Time to the mark: 21 min
No. 15007 (worked solution)
8Course to steer: 286 °T
Speed over the ground: 5.6 kn
Time to the mark: 73 min
No. 15008 (worked solution)