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Worksheet 1 · Skill 6

Course to steer

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  1. You are at 058°T, 1.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.1 kn. The current sets 313°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  

  2. You are at 290°T, 3.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.2 kn. The current sets 114°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 047°T, 1.5 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 9.5 kn. The current sets 093°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 354°T, 2.2 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.3 kn. The current sets 281°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 093°T, 1.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.2 kn. The current sets 344°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 037°T, 2.8 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.3 kn. The current sets 016°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  

  7. You are at 290°T, 1.8 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 5.0 kn. The current sets 106°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  

  8. You are at 202°T, 1.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.6 kn. The current sets 357°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: 243 °T
Speed over the ground: 6.1 kn
Time to the mark: 64 min
No. 1001 (worked solution)
2Course to steer: 191 °T
Speed over the ground: 9.8 kn
Time to the mark: 27 min
No. 1002 (worked solution)
3Course to steer: 048 °T
Speed over the ground: 10.8 kn
Time to the mark: 18 min
No. 1003 (worked solution)
4Course to steer: 193 °T
Speed over the ground: 6.7 kn
Time to the mark: 49 min
No. 1004 (worked solution)
5Course to steer: 066 °T
Speed over the ground: 6.4 kn
Time to the mark: 25 min
No. 1005 (worked solution)
6Course to steer: 160 °T
Speed over the ground: 4.0 kn
Time to the mark: 67 min
No. 1006 (worked solution)
7Course to steer: 221 °T
Speed over the ground: 4.6 kn
Time to the mark: 45 min
No. 1007 (worked solution)
8Course to steer: 281 °T
Speed over the ground: 9.9 kn
Time to the mark: 27 min
No. 1008 (worked solution)