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Worksheet 24 · Skill 6

Course to steer

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  1. You are at 184°T, 0.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.4 kn. The current sets 063°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 103°T, 1.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 9.3 kn. The current sets 345°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  

  3. You are at 028°T, 0.8 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 9.2 kn. The current sets 203°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  

  4. You are at 022°T, 2.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.9 kn. The current sets 188°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  

  5. You are at 298°T, 3.6 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.7 kn. The current sets 021°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  

  6. You are at 354°T, 1.9 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.3 kn. The current sets 242°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  

  7. You are at 359°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.8 kn. The current sets 133°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  

  8. You are at 133°T, 1.5 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.0 kn. The current sets 227°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  

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: 267 °T
Speed over the ground: 6.9 kn
Time to the mark: 47 min
No. 24001 (worked solution)
2Course to steer: 018 °T
Speed over the ground: 10.4 kn
Time to the mark: 24 min
No. 24002 (worked solution)
3Course to steer: 053 °T
Speed over the ground: 8.4 kn
Time to the mark: 29 min
No. 24003 (worked solution)
4Course to steer: 127 °T
Speed over the ground: 8.7 kn
Time to the mark: 34 min
No. 24004 (worked solution)
5Course to steer: 099 °T
Speed over the ground: 12.0 kn
Time to the mark: 36 min
No. 24005 (worked solution)
6Course to steer: 089 °T
Speed over the ground: 6.4 kn
Time to the mark: 40 min
No. 24006 (worked solution)
7Course to steer: 226 °T
Speed over the ground: 6.9 kn
Time to the mark: 54 min
No. 24007 (worked solution)
8Course to steer: 099 °T
Speed over the ground: 4.4 kn
Time to the mark: 38 min
No. 24008 (worked solution)