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Worksheet 424 · Skill 6

Course to steer

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  1. You are at 059°T, 1.3 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 5.1 kn. The current sets 176°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  

  2. You are at 352°T, 1.6 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 8.0 kn. The current sets 034°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 144°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.5 kn. The current sets 299°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  

  4. You are at 227°T, 2.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 9.8 kn. The current sets 254°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 146°T, 1.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.9 kn. The current sets 258°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  

  6. You are at 017°T, 1.9 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 6.7 kn. The current sets 047°T at 0.6 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  

  7. You are at 322°T, 1.7 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 10.0 kn. The current sets 178°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  

  8. You are at 309°T, 2.3 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.4 kn. The current sets 262°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  

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: 027 °T
Speed over the ground: 3.3 kn
Time to the mark: 62 min
No. 424001 (worked solution)
2Course to steer: 005 °T
Speed over the ground: 9.9 kn
Time to the mark: 32 min
No. 424002 (worked solution)
3Course to steer: 264 °T
Speed over the ground: 9.6 kn
Time to the mark: 38 min
No. 424003 (worked solution)
4Course to steer: 294 °T
Speed over the ground: 11.4 kn
Time to the mark: 20 min
No. 424004 (worked solution)
5Course to steer: 100 °T
Speed over the ground: 7.6 kn
Time to the mark: 23 min
No. 424005 (worked solution)
6Course to steer: 271 °T
Speed over the ground: 6.3 kn
Time to the mark: 70 min
No. 424006 (worked solution)
7Course to steer: 300 °T
Speed over the ground: 9.0 kn
Time to the mark: 36 min
No. 424007 (worked solution)
8Course to steer: 174 °T
Speed over the ground: 9.5 kn
Time to the mark: 19 min
No. 424008 (worked solution)