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Worksheet 301 · Skill 6

Course to steer

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  1. You are at 047°T, 4.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.8 kn. The current sets 213°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 052°T, 2.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.1 kn. The current sets 192°T at 0.6 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  

  3. You are at 303°T, 2.9 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.8 kn. The current sets 241°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 018°T, 2.7 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 5.7 kn. The current sets 357°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 067°T, 1.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.4 kn. The current sets 177°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  

  6. You are at 138°T, 1.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.6 kn. The current sets 126°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 046°T, 2.5 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.7 kn. The current sets 226°T at 1.2 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 057°T, 3.4 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.7 kn. The current sets 343°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  

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: 161 °T
Speed over the ground: 7.3 kn
Time to the mark: 37 min
No. 301001 (worked solution)
2Course to steer: 270 °T
Speed over the ground: 6.2 kn
Time to the mark: 50 min
No. 301002 (worked solution)
3Course to steer: 159 °T
Speed over the ground: 6.0 kn
Time to the mark: 33 min
No. 301003 (worked solution)
4Course to steer: 104 °T
Speed over the ground: 5.5 kn
Time to the mark: 32 min
No. 301004 (worked solution)
5Course to steer: 094 °T
Speed over the ground: 9.9 kn
Time to the mark: 26 min
No. 301005 (worked solution)
6Course to steer: 260 °T
Speed over the ground: 7.2 kn
Time to the mark: 42 min
No. 301006 (worked solution)
7Course to steer: 016 °T
Speed over the ground: 7.7 kn
Time to the mark: 16 min
No. 301007 (worked solution)
8Course to steer: 136 °T
Speed over the ground: 4.7 kn
Time to the mark: 46 min
No. 301008 (worked solution)