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Worksheet 198 · Skill 6

Course to steer

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  1. You are at 038°T, 2.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 5.4 kn. The current sets 039°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  

  2. You are at 340°T, 2.6 nm from Mill stack, bound for Green can "3". Your speed through the water is 8.4 kn. The current sets 120°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  

  3. You are at 054°T, 1.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.6 kn. The current sets 311°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  

  4. You are at 053°T, 1.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.6 kn. The current sets 231°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  

  5. You are at 002°T, 2.1 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.0 kn. The current sets 309°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  

  6. You are at 274°T, 2.7 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 8.8 kn. The current sets 240°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  

  7. You are at 267°T, 1.7 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.9 kn. The current sets 257°T at 1.4 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 131°T, 1.5 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.3 kn. The current sets 103°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  

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: 241 °T
Speed over the ground: 3.7 kn
Time to the mark: 110 min
No. 198001 (worked solution)
2Course to steer: 014 °T
Speed over the ground: 8.1 kn
Time to the mark: 18 min
No. 198002 (worked solution)
3Course to steer: 251 °T
Speed over the ground: 7.7 kn
Time to the mark: 46 min
No. 198003 (worked solution)
4Course to steer: 119 °T
Speed over the ground: 7.3 kn
Time to the mark: 32 min
No. 198004 (worked solution)
5Course to steer: 203 °T
Speed over the ground: 8.7 kn
Time to the mark: 44 min
No. 198005 (worked solution)
6Course to steer: 136 °T
Speed over the ground: 8.5 kn
Time to the mark: 14 min
No. 198006 (worked solution)
7Course to steer: 052 °T
Speed over the ground: 4.7 kn
Time to the mark: 71 min
No. 198007 (worked solution)
8Course to steer: 081 °T
Speed over the ground: 13.0 kn
Time to the mark: 21 min
No. 198008 (worked solution)