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Worksheet 843 · Skill 6

Course to steer

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  1. You are at 334°T, 1.5 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.6 kn. The current sets 039°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  

  2. You are at 088°T, 3.0 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.4 kn. The current sets 045°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  

  3. You are at 193°T, 2.1 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.6 kn. The current sets 333°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  

  4. You are at 295°T, 4.0 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.5 kn. The current sets 190°T at 1.3 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  

  5. You are at 093°T, 1.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.0 kn. The current sets 356°T at 1.3 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  

  6. You are at 306°T, 3.9 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.9 kn. The current sets 341°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 323°T, 1.5 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 8.8 kn. The current sets 347°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  

  8. You are at 265°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.9 kn. The current sets 148°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  

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: 102 °T
Speed over the ground: 6.4 kn
Time to the mark: 44 min
No. 843001 (worked solution)
2Course to steer: 113 °T
Speed over the ground: 5.9 kn
Time to the mark: 27 min
No. 843002 (worked solution)
3Course to steer: 034 °T
Speed over the ground: 11.9 kn
Time to the mark: 32 min
No. 843003 (worked solution)
4Course to steer: 145 °T
Speed over the ground: 12.5 kn
Time to the mark: 18 min
No. 843004 (worked solution)
5Course to steer: 103 °T
Speed over the ground: 10.7 kn
Time to the mark: 23 min
No. 843005 (worked solution)
6Course to steer: 114 °T
Speed over the ground: 4.9 kn
Time to the mark: 89 min
No. 843006 (worked solution)
7Course to steer: 188 °T
Speed over the ground: 6.5 kn
Time to the mark: 27 min
No. 843007 (worked solution)
8Course to steer: 278 °T
Speed over the ground: 5.8 kn
Time to the mark: 43 min
No. 843008 (worked solution)