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Worksheet 144 · Skill 6

Course to steer

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  1. You are at 181°T, 1.0 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 10.8 kn. The current sets 335°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  

  2. You are at 041°T, 1.8 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.3 kn. The current sets 236°T at 1.9 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 084°T, 2.0 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 6.8 kn. The current sets 332°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 075°T, 2.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 9.9 kn. The current sets 053°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 316°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.1 kn. The current sets 356°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  

  6. You are at 065°T, 3.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.4 kn. The current sets 272°T at 1.9 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  

  7. You are at 339°T, 1.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.4 kn. The current sets 155°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  

  8. You are at 071°T, 2.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.1 kn. The current sets 061°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  

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: 278 °T
Speed over the ground: 11.4 kn
Time to the mark: 26 min
No. 144001 (worked solution)
2Course to steer: 261 °T
Speed over the ground: 11.0 kn
Time to the mark: 33 min
No. 144002 (worked solution)
3Course to steer: 036 °T
Speed over the ground: 7.0 kn
Time to the mark: 27 min
No. 144003 (worked solution)
4Course to steer: 267 °T
Speed over the ground: 8.6 kn
Time to the mark: 41 min
No. 144004 (worked solution)
5Course to steer: 270 °T
Speed over the ground: 10.2 kn
Time to the mark: 17 min
No. 144005 (worked solution)
6Course to steer: 122 °T
Speed over the ground: 9.8 kn
Time to the mark: 19 min
No. 144006 (worked solution)
7Course to steer: 270 °T
Speed over the ground: 7.7 kn
Time to the mark: 35 min
No. 144007 (worked solution)
8Course to steer: 143 °T
Speed over the ground: 7.2 kn
Time to the mark: 25 min
No. 144008 (worked solution)