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Worksheet 557 · Skill 6

Course to steer

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  1. You are at 100°T, 2.0 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.0 kn. The current sets 165°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 267°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 10.0 kn. The current sets 146°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 338°T, 2.4 nm from Mill stack, bound for Green can "3". Your speed through the water is 10.0 kn. The current sets 086°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  

  4. You are at 039°T, 2.8 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.9 kn. The current sets 141°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  

  5. You are at 001°T, 1.7 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 11.6 kn. The current sets 260°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  

  6. You are at 105°T, 2.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.6 kn. The current sets 204°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  

  7. You are at 166°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.0 kn. The current sets 089°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  

  8. You are at 280°T, 3.6 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.4 kn. The current sets 110°T at 1.2 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  

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: 102 °T
Speed over the ground: 9.2 kn
Time to the mark: 17 min
No. 557001 (worked solution)
2Course to steer: 273 °T
Speed over the ground: 8.9 kn
Time to the mark: 26 min
No. 557002 (worked solution)
3Course to steer: 018 °T
Speed over the ground: 10.4 kn
Time to the mark: 15 min
No. 557003 (worked solution)
4Course to steer: 107 °T
Speed over the ground: 6.7 kn
Time to the mark: 21 min
No. 557004 (worked solution)
5Course to steer: 013 °T
Speed over the ground: 11.2 kn
Time to the mark: 28 min
No. 557005 (worked solution)
6Course to steer: 064 °T
Speed over the ground: 4.1 kn
Time to the mark: 45 min
No. 557006 (worked solution)
7Course to steer: 294 °T
Speed over the ground: 6.1 kn
Time to the mark: 45 min
No. 557007 (worked solution)
8Course to steer: 147 °T
Speed over the ground: 6.4 kn
Time to the mark: 27 min
No. 557008 (worked solution)