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Worksheet 84 · Skill 6

Course to steer

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  1. You are at 114°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.0 kn. The current sets 218°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  

  2. You are at 202°T, 2.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.7 kn. The current sets 113°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  

  3. You are at 265°T, 1.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.4 kn. The current sets 346°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  

  4. You are at 240°T, 2.5 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.8 kn. The current sets 295°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  

  5. You are at 289°T, 1.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.1 kn. The current sets 189°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 152°T, 1.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.9 kn. The current sets 306°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 055°T, 2.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.4 kn. The current sets 267°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  

  8. You are at 207°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.6 kn. The current sets 191°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: 282 °T
Speed over the ground: 6.3 kn
Time to the mark: 60 min
No. 84001 (worked solution)
2Course to steer: 257 °T
Speed over the ground: 7.8 kn
Time to the mark: 24 min
No. 84002 (worked solution)
3Course to steer: 292 °T
Speed over the ground: 6.7 kn
Time to the mark: 21 min
No. 84003 (worked solution)
4Course to steer: 331 °T
Speed over the ground: 9.5 kn
Time to the mark: 16 min
No. 84004 (worked solution)
5Course to steer: 218 °T
Speed over the ground: 9.0 kn
Time to the mark: 28 min
No. 84005 (worked solution)
6Course to steer: 092 °T
Speed over the ground: 8.0 kn
Time to the mark: 38 min
No. 84006 (worked solution)
7Course to steer: 146 °T
Speed over the ground: 11.0 kn
Time to the mark: 21 min
No. 84007 (worked solution)
8Course to steer: 317 °T
Speed over the ground: 10.7 kn
Time to the mark: 20 min
No. 84008 (worked solution)