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Worksheet 58 · Skill 6

Course to steer

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  1. You are at 250°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 9.4 kn. The current sets 106°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  

  2. You are at 035°T, 1.5 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.7 kn. The current sets 166°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  

  3. You are at 066°T, 1.7 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.1 kn. The current sets 164°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  

  4. You are at 071°T, 3.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.2 kn. The current sets 202°T at 1.6 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 012°T, 2.5 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.1 kn. The current sets 286°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  

  6. You are at 319°T, 3.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.9 kn. The current sets 357°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  

  7. You are at 154°T, 1.8 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.6 kn. The current sets 055°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  

  8. You are at 016°T, 2.1 nm from Mill stack, bound for Green can "3". Your speed through the water is 7.8 kn. The current sets 133°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  

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: 273 °T
Speed over the ground: 7.3 kn
Time to the mark: 31 min
No. 58001 (worked solution)
2Course to steer: 077 °T
Speed over the ground: 6.9 kn
Time to the mark: 27 min
No. 58002 (worked solution)
3Course to steer: 138 °T
Speed over the ground: 9.4 kn
Time to the mark: 22 min
No. 58003 (worked solution)
4Course to steer: 141 °T
Speed over the ground: 6.1 kn
Time to the mark: 27 min
No. 58004 (worked solution)
5Course to steer: 140 °T
Speed over the ground: 8.2 kn
Time to the mark: 40 min
No. 58005 (worked solution)
6Course to steer: 107 °T
Speed over the ground: 6.6 kn
Time to the mark: 55 min
No. 58006 (worked solution)
7Course to steer: 095 °T
Speed over the ground: 8.1 kn
Time to the mark: 26 min
No. 58007 (worked solution)
8Course to steer: 339 °T
Speed over the ground: 5.8 kn
Time to the mark: 27 min
No. 58008 (worked solution)