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Worksheet 64 · Skill 6

Course to steer

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  1. You are at 043°T, 2.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.4 kn. The current sets 337°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  

  2. You are at 079°T, 1.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.8 kn. The current sets 001°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  

  3. You are at 317°T, 2.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.5 kn. The current sets 343°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  

  4. You are at 288°T, 3.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.7 kn. The current sets 298°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  

  5. You are at 117°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.2 kn. The current sets 016°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  

  6. You are at 018°T, 2.8 nm from Mill stack, bound for Red nun "2". Your speed through the water is 9.7 kn. The current sets 057°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 303°T, 1.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.0 kn. The current sets 347°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 262°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.0 kn. The current sets 322°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: 123 °T
Speed over the ground: 9.4 kn
Time to the mark: 29 min
No. 64001 (worked solution)
2Course to steer: 110 °T
Speed over the ground: 7.5 kn
Time to the mark: 32 min
No. 64002 (worked solution)
3Course to steer: 106 °T
Speed over the ground: 10.3 kn
Time to the mark: 33 min
No. 64003 (worked solution)
4Course to steer: 174 °T
Speed over the ground: 8.0 kn
Time to the mark: 32 min
No. 64004 (worked solution)
5Course to steer: 227 °T
Speed over the ground: 4.3 kn
Time to the mark: 78 min
No. 64005 (worked solution)
6Course to steer: 292 °T
Speed over the ground: 9.2 kn
Time to the mark: 15 min
No. 64006 (worked solution)
7Course to steer: 109 °T
Speed over the ground: 4.3 kn
Time to the mark: 76 min
No. 64007 (worked solution)
8Course to steer: 252 °T
Speed over the ground: 7.8 kn
Time to the mark: 30 min
No. 64008 (worked solution)