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Worksheet 97 · Skill 6

Course to steer

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  1. You are at 012°T, 2.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.8 kn. The current sets 045°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  

  2. You are at 294°T, 2.8 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.8 kn. The current sets 223°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 143°T, 1.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 10.8 kn. The current sets 231°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  

  4. You are at 306°T, 1.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.2 kn. The current sets 035°T at 2.3 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  

  5. You are at 066°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 123°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  

  6. You are at 328°T, 1.0 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.9 kn. The current sets 153°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  

  7. You are at 051°T, 2.5 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.5 kn. The current sets 073°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  

  8. You are at 319°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 9.1 kn. The current sets 141°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  

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: 154 °T
Speed over the ground: 5.5 kn
Time to the mark: 59 min
No. 97001 (worked solution)
2Course to steer: 077 °T
Speed over the ground: 6.9 kn
Time to the mark: 57 min
No. 97002 (worked solution)
3Course to steer: 099 °T
Speed over the ground: 10.3 kn
Time to the mark: 16 min
No. 97003 (worked solution)
4Course to steer: 209 °T
Speed over the ground: 2.9 kn
Time to the mark: 79 min
No. 97004 (worked solution)
5Course to steer: 029 °T
Speed over the ground: 10.8 kn
Time to the mark: 14 min
No. 97005 (worked solution)
6Course to steer: 034 °T
Speed over the ground: 8.3 kn
Time to the mark: 29 min
No. 97006 (worked solution)
7Course to steer: 164 °T
Speed over the ground: 9.6 kn
Time to the mark: 25 min
No. 97007 (worked solution)
8Course to steer: 257 °T
Speed over the ground: 8.7 kn
Time to the mark: 33 min
No. 97008 (worked solution)