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Worksheet 622 · Skill 6

Course to steer

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  1. You are at 237°T, 2.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 9.2 kn. The current sets 255°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  

  2. You are at 012°T, 1.9 nm from Kittle water tank, bound for Red nun "2". Your speed through the water is 10.1 kn. The current sets 072°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 085°T, 2.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.1 kn. The current sets 348°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  

  4. You are at 091°T, 3.1 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 12.0 kn. The current sets 321°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  

  5. You are at 238°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.2 kn. The current sets 351°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  

  6. You are at 358°T, 2.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.9 kn. The current sets 167°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  

  7. You are at 036°T, 2.0 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.1 kn. The current sets 288°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 343°T, 2.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.9 kn. The current sets 078°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  

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: 283 °T
Speed over the ground: 10.8 kn
Time to the mark: 20 min
No. 622001 (worked solution)
2Course to steer: 275 °T
Speed over the ground: 8.6 kn
Time to the mark: 47 min
No. 622002 (worked solution)
3Course to steer: 150 °T
Speed over the ground: 7.2 kn
Time to the mark: 22 min
No. 622003 (worked solution)
4Course to steer: 104 °T
Speed over the ground: 11.1 kn
Time to the mark: 14 min
No. 622004 (worked solution)
5Course to steer: 253 °T
Speed over the ground: 5.3 kn
Time to the mark: 47 min
No. 622005 (worked solution)
6Course to steer: 219 °T
Speed over the ground: 11.7 kn
Time to the mark: 32 min
No. 622006 (worked solution)
7Course to steer: 128 °T
Speed over the ground: 4.8 kn
Time to the mark: 54 min
No. 622007 (worked solution)
8Course to steer: 199 °T
Speed over the ground: 5.7 kn
Time to the mark: 43 min
No. 622008 (worked solution)