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Worksheet 82 · Skill 6

Course to steer

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  1. You are at 122°T, 2.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.4 kn. The current sets 340°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  

  2. You are at 296°T, 3.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.1 kn. The current sets 264°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 294°T, 3.7 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.5 kn. The current sets 070°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  

  4. You are at 013°T, 2.6 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 5.1 kn. The current sets 122°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 266°T, 1.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.2 kn. The current sets 316°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  

  6. You are at 286°T, 1.9 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.3 kn. The current sets 139°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  

  7. You are at 278°T, 1.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 8.5 kn. The current sets 068°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  

  8. You are at 052°T, 2.0 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 7.9 kn. The current sets 149°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  

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: 118 °T
Speed over the ground: 8.8 kn
Time to the mark: 14 min
No. 82001 (worked solution)
2Course to steer: 163 °T
Speed over the ground: 6.1 kn
Time to the mark: 46 min
No. 82002 (worked solution)
3Course to steer: 191 °T
Speed over the ground: 7.9 kn
Time to the mark: 35 min
No. 82003 (worked solution)
4Course to steer: 078 °T
Speed over the ground: 5.6 kn
Time to the mark: 33 min
No. 82004 (worked solution)
5Course to steer: 192 °T
Speed over the ground: 6.2 kn
Time to the mark: 27 min
No. 82005 (worked solution)
6Course to steer: 181 °T
Speed over the ground: 12.5 kn
Time to the mark: 10 min
No. 82006 (worked solution)
7Course to steer: 212 °T
Speed over the ground: 7.7 kn
Time to the mark: 24 min
No. 82007 (worked solution)
8Course to steer: 007 °T
Speed over the ground: 6.9 kn
Time to the mark: 23 min
No. 82008 (worked solution)