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Worksheet 98 · Skill 6

Course to steer

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  1. You are at 312°T, 2.5 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.1 kn. The current sets 245°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 322°T, 3.0 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 9.6 kn. The current sets 357°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  

  3. You are at 327°T, 2.8 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 9.1 kn. The current sets 015°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 049°T, 3.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.3 kn. The current sets 276°T at 2.0 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  

  5. You are at 066°T, 1.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.7 kn. The current sets 051°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  

  6. You are at 167°T, 1.1 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.7 kn. The current sets 311°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  

  7. You are at 106°T, 1.7 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.1 kn. The current sets 124°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  

  8. You are at 297°T, 2.9 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.9 kn. The current sets 310°T at 2.0 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: 194 °T
Speed over the ground: 5.6 kn
Time to the mark: 54 min
No. 98001 (worked solution)
2Course to steer: 292 °T
Speed over the ground: 10.0 kn
Time to the mark: 20 min
No. 98002 (worked solution)
3Course to steer: 106 °T
Speed over the ground: 9.1 kn
Time to the mark: 37 min
No. 98003 (worked solution)
4Course to steer: 140 °T
Speed over the ground: 8.0 kn
Time to the mark: 30 min
No. 98004 (worked solution)
5Course to steer: 138 °T
Speed over the ground: 11.8 kn
Time to the mark: 18 min
No. 98005 (worked solution)
6Course to steer: 105 °T
Speed over the ground: 5.6 kn
Time to the mark: 43 min
No. 98006 (worked solution)
7Course to steer: 354 °T
Speed over the ground: 4.4 kn
Time to the mark: 59 min
No. 98007 (worked solution)
8Course to steer: 098 °T
Speed over the ground: 7.3 kn
Time to the mark: 54 min
No. 98008 (worked solution)