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Worksheet 99 · Skill 6

Course to steer

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  1. You are at 299°T, 4.5 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 8.6 kn. The current sets 265°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  

  2. You are at 042°T, 2.8 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.7 kn. The current sets 235°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  

  3. You are at 032°T, 1.0 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 5.7 kn. The current sets 069°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  

  4. You are at 147°T, 3.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.4 kn. The current sets 212°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  

  5. You are at 042°T, 2.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.5 kn. The current sets 042°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  

  6. You are at 309°T, 1.5 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 9.1 kn. The current sets 006°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  

  7. You are at 012°T, 2.5 nm from Mill stack, bound for Green can "3". Your speed through the water is 8.7 kn. The current sets 081°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  

  8. You are at 324°T, 3.1 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 7.3 kn. The current sets 072°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  

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: 139 °T
Speed over the ground: 7.7 kn
Time to the mark: 34 min
No. 99001 (worked solution)
2Course to steer: 116 °T
Speed over the ground: 7.2 kn
Time to the mark: 38 min
No. 99002 (worked solution)
3Course to steer: 286 °T
Speed over the ground: 4.5 kn
Time to the mark: 84 min
No. 99003 (worked solution)
4Course to steer: 062 °T
Speed over the ground: 7.6 kn
Time to the mark: 16 min
No. 99004 (worked solution)
5Course to steer: 148 °T
Speed over the ground: 10.2 kn
Time to the mark: 25 min
No. 99005 (worked solution)
6Course to steer: 278 °T
Speed over the ground: 9.2 kn
Time to the mark: 38 min
No. 99006 (worked solution)
7Course to steer: 333 °T
Speed over the ground: 8.3 kn
Time to the mark: 16 min
No. 99007 (worked solution)
8Course to steer: 286 °T
Speed over the ground: 6.1 kn
Time to the mark: 33 min
No. 99008 (worked solution)