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Worksheet 209 · Skill 6

Course to steer

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  1. You are at 120°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.3 kn. The current sets 048°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  

  2. You are at 066°T, 1.7 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 11.6 kn. The current sets 071°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  

  3. You are at 013°T, 2.0 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 10.4 kn. The current sets 077°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 105°T, 1.8 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 6.0 kn. The current sets 155°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  

  5. You are at 071°T, 3.7 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.7 kn. The current sets 032°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 336°T, 2.7 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 7.2 kn. The current sets 344°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  

  7. You are at 277°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.7 kn. The current sets 170°T at 1.8 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  

  8. You are at 301°T, 1.7 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.5 kn. The current sets 177°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  

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: 266 °T
Speed over the ground: 7.7 kn
Time to the mark: 50 min
No. 209001 (worked solution)
2Course to steer: 041 °T
Speed over the ground: 13.0 kn
Time to the mark: 14 min
No. 209002 (worked solution)
3Course to steer: 270 °T
Speed over the ground: 8.1 kn
Time to the mark: 54 min
No. 209003 (worked solution)
4Course to steer: 084 °T
Speed over the ground: 6.3 kn
Time to the mark: 37 min
No. 209004 (worked solution)
5Course to steer: 180 °T
Speed over the ground: 10.8 kn
Time to the mark: 18 min
No. 209005 (worked solution)
6Course to steer: 030 °T
Speed over the ground: 8.1 kn
Time to the mark: 35 min
No. 209006 (worked solution)
7Course to steer: 272 °T
Speed over the ground: 6.6 kn
Time to the mark: 33 min
No. 209007 (worked solution)
8Course to steer: 042 °T
Speed over the ground: 9.1 kn
Time to the mark: 31 min
No. 209008 (worked solution)