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 410 · 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 035°T, 2.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.8 kn. The current sets 025°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  

  2. You are at 335°T, 1.9 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.7 kn. The current sets 030°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  

  3. You are at 164°T, 0.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.6 kn. The current sets 077°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 291°T, 3.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 12.0 kn. The current sets 199°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  

  5. You are at 292°T, 4.3 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 7.4 kn. The current sets 076°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  

  6. You are at 313°T, 1.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.2 kn. The current sets 164°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  

  7. You are at 262°T, 2.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.5 kn. The current sets 033°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  

  8. You are at 062°T, 2.4 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 10.8 kn. The current sets 281°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: 109 °T
Speed over the ground: 6.1 kn
Time to the mark: 28 min
No. 410001 (worked solution)
2Course to steer: 114 °T
Speed over the ground: 7.4 kn
Time to the mark: 39 min
No. 410002 (worked solution)
3Course to steer: 269 °T
Speed over the ground: 6.8 kn
Time to the mark: 50 min
No. 410003 (worked solution)
4Course to steer: 082 °T
Speed over the ground: 11.3 kn
Time to the mark: 39 min
No. 410004 (worked solution)
5Course to steer: 152 °T
Speed over the ground: 7.7 kn
Time to the mark: 31 min
No. 410005 (worked solution)
6Course to steer: 219 °T
Speed over the ground: 8.8 kn
Time to the mark: 33 min
No. 410006 (worked solution)
7Course to steer: 265 °T
Speed over the ground: 8.5 kn
Time to the mark: 20 min
No. 410007 (worked solution)
8Course to steer: 049 °T
Speed over the ground: 9.8 kn
Time to the mark: 14 min
No. 410008 (worked solution)