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Worksheet 52 · Skill 6

Course to steer

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  1. You are at 275°T, 3.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.7 kn. The current sets 069°T at 2.5 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  

  2. You are at 070°T, 3.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.2 kn. The current sets 044°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  

  3. You are at 057°T, 3.1 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 7.0 kn. The current sets 278°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  

  4. You are at 064°T, 2.2 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 12.0 kn. The current sets 044°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  

  5. You are at 124°T, 1.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 051°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  

  6. You are at 078°T, 3.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.2 kn. The current sets 068°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  

  7. You are at 063°T, 3.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.7 kn. The current sets 118°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  

  8. You are at 026°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.9 kn. The current sets 188°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  

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: 180 °T
Speed over the ground: 10.1 kn
Time to the mark: 17 min
No. 52001 (worked solution)
2Course to steer: 140 °T
Speed over the ground: 5.3 kn
Time to the mark: 34 min
No. 52002 (worked solution)
3Course to steer: 359 °T
Speed over the ground: 7.3 kn
Time to the mark: 18 min
No. 52003 (worked solution)
4Course to steer: 085 °T
Speed over the ground: 13.3 kn
Time to the mark: 9 min
No. 52004 (worked solution)
5Course to steer: 240 °T
Speed over the ground: 3.4 kn
Time to the mark: 93 min
No. 52005 (worked solution)
6Course to steer: 155 °T
Speed over the ground: 7.3 kn
Time to the mark: 20 min
No. 52006 (worked solution)
7Course to steer: 183 °T
Speed over the ground: 7.5 kn
Time to the mark: 29 min
No. 52007 (worked solution)
8Course to steer: 258 °T
Speed over the ground: 9.4 kn
Time to the mark: 42 min
No. 52008 (worked solution)