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Worksheet 617 · Skill 6

Course to steer

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Plot Pass worksheet. Plot Pass $1.95/month or $19.50/year · Free during preview. Plotroom · cedarpointmarina.net · invented chart, not for navigation.

  1. You are at 066°T, 1.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.1 kn. The current sets 107°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  

  2. You are at 075°T, 2.7 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.6 kn. The current sets 078°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 132°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.2 kn. The current sets 054°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  

  4. You are at 013°T, 1.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.0 kn. The current sets 177°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 030°T, 3.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.8 kn. The current sets 193°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  

  6. You are at 004°T, 2.9 nm from Mill stack, bound for Bell buoy "HS". Your speed through the water is 8.2 kn. The current sets 133°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  

  7. You are at 018°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.0 kn. The current sets 354°T at 0.6 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  

  8. You are at 001°T, 1.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.4 kn. The current sets 084°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  

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: 070 °T
Speed over the ground: 9.1 kn
Time to the mark: 19 min
No. 617001 (worked solution)
2Course to steer: 268 °T
Speed over the ground: 4.7 kn
Time to the mark: 77 min
No. 617002 (worked solution)
3Course to steer: 003 °T
Speed over the ground: 9.9 kn
Time to the mark: 30 min
No. 617003 (worked solution)
4Course to steer: 128 °T
Speed over the ground: 5.6 kn
Time to the mark: 51 min
No. 617004 (worked solution)
5Course to steer: 146 °T
Speed over the ground: 11.4 kn
Time to the mark: 27 min
No. 617005 (worked solution)
6Course to steer: 047 °T
Speed over the ground: 8.3 kn
Time to the mark: 53 min
No. 617006 (worked solution)
7Course to steer: 261 °T
Speed over the ground: 8.0 kn
Time to the mark: 29 min
No. 617007 (worked solution)
8Course to steer: 124 °T
Speed over the ground: 10.1 kn
Time to the mark: 29 min
No. 617008 (worked solution)