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Worksheet 852 · Skill 6

Course to steer

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  1. You are at 321°T, 1.9 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 9.9 kn. The current sets 006°T at 1.7 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  

  2. You are at 056°T, 2.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.6 kn. The current sets 045°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  

  3. You are at 211°T, 0.8 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.0 kn. The current sets 210°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  

  4. You are at 335°T, 1.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.7 kn. The current sets 178°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  

  5. You are at 091°T, 2.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.9 kn. The current sets 084°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  

  6. You are at 310°T, 3.1 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.5 kn. The current sets 178°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  

  7. You are at 045°T, 2.1 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.3 kn. The current sets 317°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 042°T, 4.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.1 kn. The current sets 124°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: 201 °T
Speed over the ground: 8.3 kn
Time to the mark: 32 min
No. 852001 (worked solution)
2Course to steer: 357 °T
Speed over the ground: 12.3 kn
Time to the mark: 12 min
No. 852002 (worked solution)
3Course to steer: 319 °T
Speed over the ground: 4.7 kn
Time to the mark: 44 min
No. 852003 (worked solution)
4Course to steer: 229 °T
Speed over the ground: 7.4 kn
Time to the mark: 43 min
No. 852004 (worked solution)
5Course to steer: 047 °T
Speed over the ground: 13.0 kn
Time to the mark: 10 min
No. 852005 (worked solution)
6Course to steer: 166 °T
Speed over the ground: 7.7 kn
Time to the mark: 29 min
No. 852006 (worked solution)
7Course to steer: 257 °T
Speed over the ground: 11.1 kn
Time to the mark: 27 min
No. 852007 (worked solution)
8Course to steer: 169 °T
Speed over the ground: 8.9 kn
Time to the mark: 33 min
No. 852008 (worked solution)