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Worksheet 803 · Skill 6

Course to steer

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  1. You are at 243°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.9 kn. The current sets 336°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 087°T, 1.7 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 8.2 kn. The current sets 231°T at 1.9 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  

  3. You are at 351°T, 1.5 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 9.8 kn. The current sets 092°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  

  4. You are at 064°T, 1.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.0 kn. The current sets 145°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  

  5. You are at 298°T, 3.8 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 10.1 kn. The current sets 354°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 209°T, 1.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.7 kn. The current sets 328°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  

  7. You are at 342°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.1 kn. The current sets 257°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  

  8. You are at 037°T, 4.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 6.5 kn. The current sets 010°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: 274 °T
Speed over the ground: 9.9 kn
Time to the mark: 21 min
No. 803001 (worked solution)
2Course to steer: 027 °T
Speed over the ground: 6.5 kn
Time to the mark: 19 min
No. 803002 (worked solution)
3Course to steer: 005 °T
Speed over the ground: 9.9 kn
Time to the mark: 33 min
No. 803003 (worked solution)
4Course to steer: 099 °T
Speed over the ground: 5.6 kn
Time to the mark: 47 min
No. 803004 (worked solution)
5Course to steer: 106 °T
Speed over the ground: 9.5 kn
Time to the mark: 47 min
No. 803005 (worked solution)
6Course to steer: 283 °T
Speed over the ground: 12.0 kn
Time to the mark: 21 min
No. 803006 (worked solution)
7Course to steer: 244 °T
Speed over the ground: 6.9 kn
Time to the mark: 47 min
No. 803007 (worked solution)
8Course to steer: 149 °T
Speed over the ground: 5.8 kn
Time to the mark: 51 min
No. 803008 (worked solution)