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 151 · 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 210°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 11.4 kn. The current sets 339°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  

  2. You are at 342°T, 2.6 nm from Mill stack, bound for Green can "3". Your speed through the water is 10.5 kn. The current sets 144°T at 2.3 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  

  3. You are at 019°T, 2.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.5 kn. The current sets 219°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  

  4. You are at 034°T, 1.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.1 kn. The current sets 278°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  

  5. You are at 237°T, 1.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.7 kn. The current sets 167°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  

  6. You are at 307°T, 3.6 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.7 kn. The current sets 325°T at 2.5 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 196°T, 1.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.6 kn. The current sets 128°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  

  8. You are at 138°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.8 kn. The current sets 006°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: 236 °T
Speed over the ground: 11.1 kn
Time to the mark: 14 min
No. 151001 (worked solution)
2Course to steer: 012 °T
Speed over the ground: 9.1 kn
Time to the mark: 15 min
No. 151002 (worked solution)
3Course to steer: 145 °T
Speed over the ground: 9.7 kn
Time to the mark: 33 min
No. 151003 (worked solution)
4Course to steer: 256 °T
Speed over the ground: 13.0 kn
Time to the mark: 26 min
No. 151004 (worked solution)
5Course to steer: 232 °T
Speed over the ground: 11.4 kn
Time to the mark: 17 min
No. 151005 (worked solution)
6Course to steer: 108 °T
Speed over the ground: 7.8 kn
Time to the mark: 53 min
No. 151006 (worked solution)
7Course to steer: 251 °T
Speed over the ground: 9.8 kn
Time to the mark: 18 min
No. 151007 (worked solution)
8Course to steer: 248 °T
Speed over the ground: 10.1 kn
Time to the mark: 32 min
No. 151008 (worked solution)