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Worksheet 831 · Skill 6

Course to steer

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  1. You are at 055°T, 1.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.2 kn. The current sets 194°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  

  2. You are at 122°T, 1.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.8 kn. The current sets 342°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  

  3. You are at 341°T, 2.7 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 6.1 kn. The current sets 257°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  

  4. You are at 066°T, 2.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.0 kn. The current sets 232°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 325°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.7 kn. The current sets 243°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 146°T, 1.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.8 kn. The current sets 261°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  

  7. You are at 246°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.4 kn. The current sets 309°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  

  8. You are at 219°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.3 kn. The current sets 260°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  

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: 100 °T
Speed over the ground: 10.2 kn
Time to the mark: 26 min
No. 831001 (worked solution)
2Course to steer: 256 °T
Speed over the ground: 6.4 kn
Time to the mark: 56 min
No. 831002 (worked solution)
3Course to steer: 281 °T
Speed over the ground: 8.2 kn
Time to the mark: 39 min
No. 831003 (worked solution)
4Course to steer: 126 °T
Speed over the ground: 9.7 kn
Time to the mark: 20 min
No. 831004 (worked solution)
5Course to steer: 276 °T
Speed over the ground: 7.7 kn
Time to the mark: 23 min
No. 831005 (worked solution)
6Course to steer: 103 °T
Speed over the ground: 9.5 kn
Time to the mark: 20 min
No. 831006 (worked solution)
7Course to steer: 052 °T
Speed over the ground: 8.2 kn
Time to the mark: 41 min
No. 831007 (worked solution)
8Course to steer: 312 °T
Speed over the ground: 5.9 kn
Time to the mark: 34 min
No. 831008 (worked solution)