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Worksheet 609 · Skill 6

Course to steer

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  1. You are at 013°T, 1.1 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 11.8 kn. The current sets 354°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  

  2. You are at 055°T, 2.8 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 7.5 kn. The current sets 125°T at 0.5 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  

  3. You are at 324°T, 2.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.5 kn. The current sets 073°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 034°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.1 kn. The current sets 344°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  

  5. You are at 121°T, 1.9 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.9 kn. The current sets 254°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  

  6. You are at 036°T, 3.1 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.5 kn. The current sets 055°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  

  7. You are at 017°T, 2.0 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 5.0 kn. The current sets 183°T at 0.8 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  

  8. You are at 001°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 9.1 kn. The current sets 299°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: 269 °T
Speed over the ground: 12.3 kn
Time to the mark: 35 min
No. 609001 (worked solution)
2Course to steer: 355 °T
Speed over the ground: 7.2 kn
Time to the mark: 18 min
No. 609002 (worked solution)
3Course to steer: 216 °T
Speed over the ground: 5.8 kn
Time to the mark: 48 min
No. 609003 (worked solution)
4Course to steer: 041 °T
Speed over the ground: 9.7 kn
Time to the mark: 19 min
No. 609004 (worked solution)
5Course to steer: 108 °T
Speed over the ground: 8.2 kn
Time to the mark: 17 min
No. 609005 (worked solution)
6Course to steer: 170 °T
Speed over the ground: 8.8 kn
Time to the mark: 33 min
No. 609006 (worked solution)
7Course to steer: 283 °T
Speed over the ground: 4.9 kn
Time to the mark: 90 min
No. 609007 (worked solution)
8Course to steer: 239 °T
Speed over the ground: 10.3 kn
Time to the mark: 34 min
No. 609008 (worked solution)