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Worksheet 48 · Skill 6

Course to steer

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  1. You are at 314°T, 1.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.6 kn. The current sets 091°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  

  2. You are at 278°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.5 kn. The current sets 095°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  

  3. You are at 060°T, 3.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.6 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 179°T, 1.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.9 kn. The current sets 173°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  

  5. You are at 060°T, 3.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.9 kn. The current sets 112°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  

  6. You are at 054°T, 2.7 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 6.0 kn. The current sets 155°T at 1.9 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  

  7. You are at 265°T, 2.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.2 kn. The current sets 307°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  

  8. You are at 071°T, 3.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.4 kn. The current sets 030°T at 1.8 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  

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: 219 °T
Speed over the ground: 10.8 kn
Time to the mark: 27 min
No. 48001 (worked solution)
2Course to steer: 206 °T
Speed over the ground: 7.2 kn
Time to the mark: 30 min
No. 48002 (worked solution)
3Course to steer: 172 °T
Speed over the ground: 10.4 kn
Time to the mark: 20 min
No. 48003 (worked solution)
4Course to steer: 262 °T
Speed over the ground: 7.3 kn
Time to the mark: 33 min
No. 48004 (worked solution)
5Course to steer: 176 °T
Speed over the ground: 11.7 kn
Time to the mark: 19 min
No. 48005 (worked solution)
6Course to steer: 353 °T
Speed over the ground: 4.2 kn
Time to the mark: 31 min
No. 48006 (worked solution)
7Course to steer: 184 °T
Speed over the ground: 4.7 kn
Time to the mark: 38 min
No. 48007 (worked solution)
8Course to steer: 145 °T
Speed over the ground: 4.9 kn
Time to the mark: 34 min
No. 48008 (worked solution)