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Worksheet 755 · Skill 6

Course to steer

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  1. You are at 020°T, 2.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.8 kn. The current sets 016°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  

  2. You are at 276°T, 3.2 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 9.2 kn. The current sets 006°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  

  3. You are at 004°T, 1.9 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.9 kn. The current sets 133°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  

  4. You are at 346°T, 2.3 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 10.6 kn. The current sets 209°T at 0.7 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  

  5. You are at 126°T, 1.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.2 kn. The current sets 167°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  

  6. You are at 054°T, 1.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.8 kn. The current sets 207°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  

  7. You are at 116°T, 1.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.6 kn. The current sets 022°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  

  8. You are at 047°T, 3.9 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.7 kn. The current sets 055°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  

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: 131 °T
Speed over the ground: 10.1 kn
Time to the mark: 33 min
No. 755001 (worked solution)
2Course to steer: 150 °T
Speed over the ground: 7.8 kn
Time to the mark: 19 min
No. 755002 (worked solution)
3Course to steer: 094 °T
Speed over the ground: 13.4 kn
Time to the mark: 17 min
No. 755003 (worked solution)
4Course to steer: 098 °T
Speed over the ground: 10.4 kn
Time to the mark: 27 min
No. 755004 (worked solution)
5Course to steer: 072 °T
Speed over the ground: 5.2 kn
Time to the mark: 51 min
No. 755005 (worked solution)
6Course to steer: 266 °T
Speed over the ground: 11.6 kn
Time to the mark: 33 min
No. 755006 (worked solution)
7Course to steer: 110 °T
Speed over the ground: 6.6 kn
Time to the mark: 31 min
No. 755007 (worked solution)
8Course to steer: 170 °T
Speed over the ground: 9.1 kn
Time to the mark: 28 min
No. 755008 (worked solution)