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Worksheet 255 · Skill 6

Course to steer

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  1. You are at 022°T, 1.0 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.2 kn. The current sets 122°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  

  2. You are at 300°T, 1.2 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.5 kn. The current sets 031°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 049°T, 2.4 nm from Mill stack, bound for Green can "3". Your speed through the water is 11.6 kn. The current sets 063°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 290°T, 4.2 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 8.2 kn. The current sets 354°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  

  5. You are at 316°T, 2.2 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 7.9 kn. The current sets 315°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  

  6. You are at 009°T, 2.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.7 kn. The current sets 148°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  

  7. You are at 301°T, 3.7 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.6 kn. The current sets 281°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  

  8. You are at 265°T, 2.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.4 kn. The current sets 109°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: 022 °T
Speed over the ground: 10.0 kn
Time to the mark: 20 min
No. 255001 (worked solution)
2Course to steer: 254 °T
Speed over the ground: 7.6 kn
Time to the mark: 30 min
No. 255002 (worked solution)
3Course to steer: 319 °T
Speed over the ground: 11.2 kn
Time to the mark: 19 min
No. 255003 (worked solution)
4Course to steer: 148 °T
Speed over the ground: 7.1 kn
Time to the mark: 32 min
No. 255004 (worked solution)
5Course to steer: 177 °T
Speed over the ground: 7.0 kn
Time to the mark: 27 min
No. 255005 (worked solution)
6Course to steer: 130 °T
Speed over the ground: 7.6 kn
Time to the mark: 43 min
No. 255006 (worked solution)
7Course to steer: 170 °T
Speed over the ground: 5.3 kn
Time to the mark: 57 min
No. 255007 (worked solution)
8Course to steer: 037 °T
Speed over the ground: 5.8 kn
Time to the mark: 61 min
No. 255008 (worked solution)