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Worksheet 333 · Skill 6

Course to steer

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  1. You are at 043°T, 2.6 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.1 kn. The current sets 348°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  

  2. You are at 276°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.1 kn. The current sets 049°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 057°T, 2.8 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.9 kn. The current sets 126°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  

  4. You are at 044°T, 4.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.8 kn. The current sets 171°T at 2.3 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 306°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.2 kn. The current sets 305°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 332°T, 1.7 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 11.6 kn. The current sets 065°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  

  7. You are at 344°T, 3.2 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 10.3 kn. The current sets 141°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  

  8. You are at 336°T, 2.0 nm from Mill stack, bound for Green can "3". Your speed through the water is 5.8 kn. The current sets 305°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: 157 °T
Speed over the ground: 3.8 kn
Time to the mark: 68 min
No. 333001 (worked solution)
2Course to steer: 286 °T
Speed over the ground: 6.8 kn
Time to the mark: 20 min
No. 333002 (worked solution)
3Course to steer: 266 °T
Speed over the ground: 5.1 kn
Time to the mark: 86 min
No. 333003 (worked solution)
4Course to steer: 139 °T
Speed over the ground: 11.8 kn
Time to the mark: 23 min
No. 333004 (worked solution)
5Course to steer: 232 °T
Speed over the ground: 7.2 kn
Time to the mark: 37 min
No. 333005 (worked solution)
6Course to steer: 013 °T
Speed over the ground: 12.2 kn
Time to the mark: 27 min
No. 333006 (worked solution)
7Course to steer: 012 °T
Speed over the ground: 9.0 kn
Time to the mark: 27 min
No. 333007 (worked solution)
8Course to steer: 028 °T
Speed over the ground: 6.0 kn
Time to the mark: 29 min
No. 333008 (worked solution)