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Worksheet 320 · Skill 6

Course to steer

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  1. You are at 046°T, 2.8 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.7 kn. The current sets 332°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 034°T, 2.3 nm from Mill stack, bound for Green can "1". Your speed through the water is 7.5 kn. The current sets 148°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  

  3. You are at 281°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.8 kn. The current sets 090°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  

  4. You are at 297°T, 2.0 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 5.7 kn. The current sets 021°T at 1.5 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 253°T, 1.8 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.0 kn. The current sets 096°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  

  6. You are at 147°T, 1.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.9 kn. The current sets 257°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  

  7. You are at 211°T, 2.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.6 kn. The current sets 049°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  

  8. You are at 059°T, 3.0 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.0 kn. The current sets 095°T at 1.0 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  

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: 241 °T
Speed over the ground: 9.9 kn
Time to the mark: 43 min
No. 320001 (worked solution)
2Course to steer: 300 °T
Speed over the ground: 5.8 kn
Time to the mark: 34 min
No. 320002 (worked solution)
3Course to steer: 218 °T
Speed over the ground: 8.1 kn
Time to the mark: 29 min
No. 320003 (worked solution)
4Course to steer: 300 °T
Speed over the ground: 6.1 kn
Time to the mark: 42 min
No. 320004 (worked solution)
5Course to steer: 221 °T
Speed over the ground: 9.2 kn
Time to the mark: 15 min
No. 320005 (worked solution)
6Course to steer: 102 °T
Speed over the ground: 9.1 kn
Time to the mark: 21 min
No. 320006 (worked solution)
7Course to steer: 315 °T
Speed over the ground: 8.6 kn
Time to the mark: 26 min
No. 320007 (worked solution)
8Course to steer: 154 °T
Speed over the ground: 10.5 kn
Time to the mark: 19 min
No. 320008 (worked solution)