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Worksheet 838 · Skill 6

Course to steer

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  1. You are at 116°T, 1.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.4 kn. The current sets 306°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 010°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.8 kn. The current sets 103°T at 1.8 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  

  3. You are at 017°T, 3.5 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.7 kn. The current sets 257°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  

  4. You are at 061°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.9 kn. The current sets 338°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  

  5. You are at 209°T, 2.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.3 kn. The current sets 352°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 358°T, 3.1 nm from Mill stack, bound for Bell buoy "HS". Your speed through the water is 8.0 kn. The current sets 316°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 229°T, 2.0 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.0 kn. The current sets 208°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  

  8. You are at 318°T, 2.9 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 7.0 kn. The current sets 140°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  

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: 239 °T
Speed over the ground: 12.4 kn
Time to the mark: 23 min
No. 838001 (worked solution)
2Course to steer: 266 °T
Speed over the ground: 6.1 kn
Time to the mark: 37 min
No. 838002 (worked solution)
3Course to steer: 147 °T
Speed over the ground: 11.3 kn
Time to the mark: 32 min
No. 838003 (worked solution)
4Course to steer: 267 °T
Speed over the ground: 8.1 kn
Time to the mark: 36 min
No. 838004 (worked solution)
5Course to steer: 244 °T
Speed over the ground: 7.0 kn
Time to the mark: 20 min
No. 838005 (worked solution)
6Course to steer: 071 °T
Speed over the ground: 7.3 kn
Time to the mark: 60 min
No. 838006 (worked solution)
7Course to steer: 329 °T
Speed over the ground: 5.5 kn
Time to the mark: 33 min
No. 838007 (worked solution)
8Course to steer: 188 °T
Speed over the ground: 8.7 kn
Time to the mark: 26 min
No. 838008 (worked solution)