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Worksheet 154 · Skill 6

Course to steer

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  1. You are at 200°T, 2.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.8 kn. The current sets 255°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  

  2. You are at 287°T, 3.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.3 kn. The current sets 008°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  

  3. You are at 332°T, 1.0 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 8.4 kn. The current sets 144°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  

  4. You are at 324°T, 2.8 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 8.0 kn. The current sets 342°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  

  5. You are at 087°T, 2.9 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.0 kn. The current sets 009°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  

  6. You are at 007°T, 2.1 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.9 kn. The current sets 356°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  

  7. You are at 301°T, 4.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.6 kn. The current sets 271°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  

  8. You are at 037°T, 1.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.9 kn. The current sets 076°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  

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: 059 °T
Speed over the ground: 5.3 kn
Time to the mark: 68 min
No. 154001 (worked solution)
2Course to steer: 094 °T
Speed over the ground: 8.4 kn
Time to the mark: 52 min
No. 154002 (worked solution)
3Course to steer: 062 °T
Speed over the ground: 8.6 kn
Time to the mark: 21 min
No. 154003 (worked solution)
4Course to steer: 177 °T
Speed over the ground: 6.5 kn
Time to the mark: 36 min
No. 154004 (worked solution)
5Course to steer: 345 °T
Speed over the ground: 5.9 kn
Time to the mark: 38 min
No. 154005 (worked solution)
6Course to steer: 144 °T
Speed over the ground: 8.8 kn
Time to the mark: 36 min
No. 154006 (worked solution)
7Course to steer: 157 °T
Speed over the ground: 5.1 kn
Time to the mark: 62 min
No. 154007 (worked solution)
8Course to steer: 152 °T
Speed over the ground: 7.3 kn
Time to the mark: 36 min
No. 154008 (worked solution)