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Worksheet 398 · Skill 6

Course to steer

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  1. You are at 220°T, 2.2 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.9 kn. The current sets 033°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 314°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.6 kn. The current sets 294°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  

  3. You are at 089°T, 2.1 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.8 kn. The current sets 143°T at 0.7 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 049°T, 2.3 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.6 kn. The current sets 156°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  

  5. You are at 027°T, 2.2 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 10.9 kn. The current sets 273°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 031°T, 2.2 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 6.8 kn. The current sets 239°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  

  7. You are at 354°T, 1.6 nm from Mill stack, bound for Green can "1". Your speed through the water is 10.6 kn. The current sets 336°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 156°T, 1.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.5 kn. The current sets 286°T at 1.9 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  

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: 264 °T
Speed over the ground: 4.8 kn
Time to the mark: 51 min
No. 398001 (worked solution)
2Course to steer: 186 °T
Speed over the ground: 6.3 kn
Time to the mark: 47 min
No. 398002 (worked solution)
3Course to steer: 052 °T
Speed over the ground: 9.8 kn
Time to the mark: 14 min
No. 398003 (worked solution)
4Course to steer: 276 °T
Speed over the ground: 5.8 kn
Time to the mark: 77 min
No. 398004 (worked solution)
5Course to steer: 003 °T
Speed over the ground: 10.9 kn
Time to the mark: 27 min
No. 398005 (worked solution)
6Course to steer: 286 °T
Speed over the ground: 7.8 kn
Time to the mark: 57 min
No. 398006 (worked solution)
7Course to steer: 308 °T
Speed over the ground: 12.6 kn
Time to the mark: 11 min
No. 398007 (worked solution)
8Course to steer: 082 °T
Speed over the ground: 9.8 kn
Time to the mark: 31 min
No. 398008 (worked solution)