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Worksheet 66 · Skill 6

Course to steer

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  1. You are at 325°T, 1.2 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.1 kn. The current sets 333°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 004°T, 1.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.9 kn. The current sets 188°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  

  3. You are at 060°T, 3.9 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 8.5 kn. The current sets 051°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  

  4. You are at 197°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.4 kn. The current sets 310°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 044°T, 3.0 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.3 kn. The current sets 255°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  

  6. You are at 113°T, 1.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.2 kn. The current sets 183°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  

  7. You are at 115°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.7 kn. The current sets 171°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  

  8. You are at 259°T, 3.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.7 kn. The current sets 158°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  

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: 249 °T
Speed over the ground: 7.3 kn
Time to the mark: 35 min
No. 66001 (worked solution)
2Course to steer: 269 °T
Speed over the ground: 6.4 kn
Time to the mark: 53 min
No. 66002 (worked solution)
3Course to steer: 149 °T
Speed over the ground: 8.4 kn
Time to the mark: 24 min
No. 66003 (worked solution)
4Course to steer: 276 °T
Speed over the ground: 6.9 kn
Time to the mark: 44 min
No. 66004 (worked solution)
5Course to steer: 138 °T
Speed over the ground: 10.5 kn
Time to the mark: 24 min
No. 66005 (worked solution)
6Course to steer: 084 °T
Speed over the ground: 5.1 kn
Time to the mark: 50 min
No. 66006 (worked solution)
7Course to steer: 254 °T
Speed over the ground: 8.0 kn
Time to the mark: 42 min
No. 66007 (worked solution)
8Course to steer: 188 °T
Speed over the ground: 7.0 kn
Time to the mark: 21 min
No. 66008 (worked solution)