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Worksheet 197 · Skill 6

Course to steer

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  1. You are at 036°T, 2.3 nm from Mill stack, bound for Red nun "2". Your speed through the water is 11.5 kn. The current sets 161°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  

  2. You are at 017°T, 2.7 nm from Mill stack, bound for Green can "3". Your speed through the water is 10.1 kn. The current sets 128°T at 2.1 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 028°T, 1.8 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 8.5 kn. The current sets 285°T at 0.8 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  

  4. You are at 216°T, 0.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.0 kn. The current sets 086°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  

  5. You are at 252°T, 2.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.9 kn. The current sets 067°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  

  6. You are at 264°T, 1.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.0 kn. The current sets 198°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  

  7. You are at 327°T, 3.1 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 10.7 kn. The current sets 247°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  

  8. You are at 022°T, 2.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 12.0 kn. The current sets 050°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  

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: 312 °T
Speed over the ground: 9.8 kn
Time to the mark: 19 min
No. 197001 (worked solution)
2Course to steer: 335 °T
Speed over the ground: 8.3 kn
Time to the mark: 15 min
No. 197002 (worked solution)
3Course to steer: 005 °T
Speed over the ground: 8.7 kn
Time to the mark: 36 min
No. 197003 (worked solution)
4Course to steer: 293 °T
Speed over the ground: 8.3 kn
Time to the mark: 25 min
No. 197004 (worked solution)
5Course to steer: 214 °T
Speed over the ground: 5.2 kn
Time to the mark: 27 min
No. 197005 (worked solution)
6Course to steer: 286 °T
Speed over the ground: 5.2 kn
Time to the mark: 43 min
No. 197006 (worked solution)
7Course to steer: 271 °T
Speed over the ground: 12.2 kn
Time to the mark: 25 min
No. 197007 (worked solution)
8Course to steer: 155 °T
Speed over the ground: 11.8 kn
Time to the mark: 27 min
No. 197008 (worked solution)