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Worksheet 348 · Skill 6

Course to steer

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  1. You are at 040°T, 1.0 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 9.0 kn. The current sets 063°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  

  2. You are at 269°T, 1.3 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.5 kn. The current sets 084°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  

  3. You are at 299°T, 1.1 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.4 kn. The current sets 334°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  

  4. You are at 289°T, 3.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.3 kn. The current sets 094°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  

  5. You are at 033°T, 4.1 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.6 kn. The current sets 039°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  

  6. You are at 044°T, 2.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 6.5 kn. The current sets 295°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  

  7. You are at 053°T, 1.7 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 7.3 kn. The current sets 247°T at 1.1 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 108°T, 1.8 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.4 kn. The current sets 153°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: 267 °T
Speed over the ground: 7.5 kn
Time to the mark: 33 min
No. 348001 (worked solution)
2Course to steer: 039 °T
Speed over the ground: 5.9 kn
Time to the mark: 53 min
No. 348002 (worked solution)
3Course to steer: 251 °T
Speed over the ground: 9.8 kn
Time to the mark: 24 min
No. 348003 (worked solution)
4Course to steer: 203 °T
Speed over the ground: 7.9 kn
Time to the mark: 32 min
No. 348004 (worked solution)
5Course to steer: 144 °T
Speed over the ground: 11.4 kn
Time to the mark: 27 min
No. 348005 (worked solution)
6Course to steer: 024 °T
Speed over the ground: 6.6 kn
Time to the mark: 21 min
No. 348006 (worked solution)
7Course to steer: 301 °T
Speed over the ground: 8.0 kn
Time to the mark: 52 min
No. 348007 (worked solution)
8Course to steer: 277 °T
Speed over the ground: 6.9 kn
Time to the mark: 62 min
No. 348008 (worked solution)