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Worksheet 804 · Skill 6

Course to steer

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  1. You are at 275°T, 2.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.2 kn. The current sets 334°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  

  2. You are at 040°T, 3.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.9 kn. The current sets 263°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  

  3. You are at 276°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.5 kn. The current sets 153°T at 1.6 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  

  4. You are at 284°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 10.1 kn. The current sets 149°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  

  5. You are at 025°T, 3.0 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.4 kn. The current sets 178°T at 0.9 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  

  6. You are at 069°T, 2.0 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.2 kn. The current sets 267°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  

  7. You are at 054°T, 1.9 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.4 kn. The current sets 145°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 334°T, 0.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.5 kn. The current sets 029°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  

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: 188 °T
Speed over the ground: 8.3 kn
Time to the mark: 25 min
No. 804001 (worked solution)
2Course to steer: 146 °T
Speed over the ground: 11.2 kn
Time to the mark: 24 min
No. 804002 (worked solution)
3Course to steer: 299 °T
Speed over the ground: 5.2 kn
Time to the mark: 26 min
No. 804003 (worked solution)
4Course to steer: 269 °T
Speed over the ground: 9.3 kn
Time to the mark: 29 min
No. 804004 (worked solution)
5Course to steer: 140 °T
Speed over the ground: 8.1 kn
Time to the mark: 38 min
No. 804005 (worked solution)
6Course to steer: 010 °T
Speed over the ground: 11.1 kn
Time to the mark: 17 min
No. 804006 (worked solution)
7Course to steer: 106 °T
Speed over the ground: 9.5 kn
Time to the mark: 28 min
No. 804007 (worked solution)
8Course to steer: 245 °T
Speed over the ground: 5.0 kn
Time to the mark: 54 min
No. 804008 (worked solution)