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Worksheet 642 · 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 101°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.3 kn. The current sets 125°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  

  2. You are at 310°T, 2.3 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.7 kn. The current sets 310°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  

  3. You are at 062°T, 2.7 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 10.0 kn. The current sets 169°T at 2.1 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 241°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.5 kn. The current sets 323°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  

  5. You are at 356°T, 1.8 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 5.8 kn. The current sets 345°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  

  6. You are at 092°T, 1.4 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.3 kn. The current sets 270°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  

  7. You are at 046°T, 2.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.0 kn. The current sets 074°T at 2.1 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  

  8. You are at 356°T, 2.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.2 kn. The current sets 187°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: 252 °T
Speed over the ground: 5.7 kn
Time to the mark: 64 min
No. 642001 (worked solution)
2Course to steer: 098 °T
Speed over the ground: 9.9 kn
Time to the mark: 35 min
No. 642002 (worked solution)
3Course to steer: 030 °T
Speed over the ground: 8.5 kn
Time to the mark: 15 min
No. 642003 (worked solution)
4Course to steer: 263 °T
Speed over the ground: 6.1 kn
Time to the mark: 41 min
No. 642004 (worked solution)
5Course to steer: 086 °T
Speed over the ground: 5.7 kn
Time to the mark: 42 min
No. 642005 (worked solution)
6Course to steer: 026 °T
Speed over the ground: 4.9 kn
Time to the mark: 48 min
No. 642006 (worked solution)
7Course to steer: 149 °T
Speed over the ground: 9.8 kn
Time to the mark: 25 min
No. 642007 (worked solution)
8Course to steer: 217 °T
Speed over the ground: 7.0 kn
Time to the mark: 54 min
No. 642008 (worked solution)