Plotroom

PREVIEWFree during preview: checkout has not opened, so skills 5 to 8, worksheets and CSV cost nothing yet. Price when it opens: Plot Pass $1.95/month or $19.50/year.

Worksheet 181 · Skill 6

Course to steer

Next sheet

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 180°T, 1.5 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.4 kn. The current sets 203°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  

  2. You are at 027°T, 3.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.7 kn. The current sets 186°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  

  3. You are at 331°T, 1.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.2 kn. The current sets 136°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 301°T, 3.2 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.7 kn. The current sets 137°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  

  5. You are at 126°T, 1.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.1 kn. The current sets 153°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  

  6. You are at 290°T, 4.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.4 kn. The current sets 296°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  

  7. You are at 020°T, 1.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.4 kn. The current sets 144°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  

  8. You are at 197°T, 1.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.9 kn. The current sets 222°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  

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: 051 °T
Speed over the ground: 6.6 kn
Time to the mark: 44 min
No. 181001 (worked solution)
2Course to steer: 128 °T
Speed over the ground: 8.3 kn
Time to the mark: 39 min
No. 181002 (worked solution)
3Course to steer: 223 °T
Speed over the ground: 10.6 kn
Time to the mark: 25 min
No. 181003 (worked solution)
4Course to steer: 089 °T
Speed over the ground: 6.0 kn
Time to the mark: 67 min
No. 181004 (worked solution)
5Course to steer: 008 °T
Speed over the ground: 6.9 kn
Time to the mark: 40 min
No. 181005 (worked solution)
6Course to steer: 168 °T
Speed over the ground: 10.4 kn
Time to the mark: 26 min
No. 181006 (worked solution)
7Course to steer: 267 °T
Speed over the ground: 7.8 kn
Time to the mark: 41 min
No. 181007 (worked solution)
8Course to steer: 251 °T
Speed over the ground: 7.0 kn
Time to the mark: 24 min
No. 181008 (worked solution)