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Worksheet 194 · Skill 6

Course to steer

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  1. You are at 124°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.4 kn. The current sets 343°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  

  2. You are at 233°T, 1.6 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 7.5 kn. The current sets 286°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  

  3. You are at 052°T, 2.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.3 kn. The current sets 153°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  

  4. You are at 195°T, 2.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.3 kn. The current sets 078°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  

  5. You are at 060°T, 2.1 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.4 kn. The current sets 040°T at 1.5 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  

  6. You are at 256°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.2 kn. The current sets 229°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  

  7. You are at 129°T, 3.1 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 10.3 kn. The current sets 170°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  

  8. You are at 092°T, 3.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.0 kn. The current sets 299°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  

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: 255 °T
Speed over the ground: 6.8 kn
Time to the mark: 60 min
No. 194001 (worked solution)
2Course to steer: 043 °T
Speed over the ground: 7.1 kn
Time to the mark: 50 min
No. 194002 (worked solution)
3Course to steer: 272 °T
Speed over the ground: 9.4 kn
Time to the mark: 42 min
No. 194003 (worked solution)
4Course to steer: 283 °T
Speed over the ground: 5.7 kn
Time to the mark: 54 min
No. 194004 (worked solution)
5Course to steer: 091 °T
Speed over the ground: 8.4 kn
Time to the mark: 16 min
No. 194005 (worked solution)
6Course to steer: 275 °T
Speed over the ground: 8.5 kn
Time to the mark: 28 min
No. 194006 (worked solution)
7Course to steer: 020 °T
Speed over the ground: 8.6 kn
Time to the mark: 25 min
No. 194007 (worked solution)
8Course to steer: 104 °T
Speed over the ground: 8.0 kn
Time to the mark: 16 min
No. 194008 (worked solution)