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Worksheet 288 · Skill 6

Course to steer

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  1. You are at 110°T, 2.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.6 kn. The current sets 294°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  

  2. You are at 257°T, 2.1 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 11.8 kn. The current sets 082°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 077°T, 2.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.9 kn. The current sets 170°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  

  4. You are at 024°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 5.0 kn. The current sets 060°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 201°T, 2.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.2 kn. The current sets 319°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  

  6. You are at 178°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.9 kn. The current sets 305°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  

  7. You are at 172°T, 1.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.9 kn. The current sets 196°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  

  8. You are at 025°T, 2.6 nm from Mill stack, bound for Green can "3". Your speed through the water is 10.1 kn. The current sets 053°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  

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: 010 °T
Speed over the ground: 11.1 kn
Time to the mark: 25 min
No. 288001 (worked solution)
2Course to steer: 213 °T
Speed over the ground: 10.7 kn
Time to the mark: 13 min
No. 288002 (worked solution)
3Course to steer: 283 °T
Speed over the ground: 10.3 kn
Time to the mark: 33 min
No. 288003 (worked solution)
4Course to steer: 265 °T
Speed over the ground: 4.3 kn
Time to the mark: 55 min
No. 288004 (worked solution)
5Course to steer: 254 °T
Speed over the ground: 7.2 kn
Time to the mark: 17 min
No. 288005 (worked solution)
6Course to steer: 276 °T
Speed over the ground: 13.3 kn
Time to the mark: 25 min
No. 288006 (worked solution)
7Course to steer: 072 °T
Speed over the ground: 8.2 kn
Time to the mark: 40 min
No. 288007 (worked solution)
8Course to steer: 327 °T
Speed over the ground: 10.3 kn
Time to the mark: 14 min
No. 288008 (worked solution)