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Worksheet 425 · Skill 6

Course to steer

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  1. You are at 332°T, 2.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 6.0 kn. The current sets 234°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  

  2. You are at 255°T, 2.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.8 kn. The current sets 191°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  

  3. You are at 036°T, 2.7 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.2 kn. The current sets 271°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  

  4. You are at 276°T, 2.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.4 kn. The current sets 095°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  

  5. You are at 266°T, 2.6 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.6 kn. The current sets 275°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  

  6. You are at 240°T, 1.5 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.2 kn. The current sets 081°T at 2.1 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  

  7. You are at 067°T, 3.1 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.1 kn. The current sets 285°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  

  8. You are at 029°T, 4.1 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.0 kn. The current sets 234°T at 2.2 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  

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: 185 °T
Speed over the ground: 6.3 kn
Time to the mark: 36 min
No. 425001 (worked solution)
2Course to steer: 202 °T
Speed over the ground: 8.3 kn
Time to the mark: 18 min
No. 425002 (worked solution)
3Course to steer: 119 °T
Speed over the ground: 6.3 kn
Time to the mark: 46 min
No. 425003 (worked solution)
4Course to steer: 207 °T
Speed over the ground: 8.1 kn
Time to the mark: 26 min
No. 425004 (worked solution)
5Course to steer: 256 °T
Speed over the ground: 7.8 kn
Time to the mark: 22 min
No. 425005 (worked solution)
6Course to steer: 268 °T
Speed over the ground: 3.1 kn
Time to the mark: 79 min
No. 425006 (worked solution)
7Course to steer: 350 °T
Speed over the ground: 10.5 kn
Time to the mark: 15 min
No. 425007 (worked solution)
8Course to steer: 120 °T
Speed over the ground: 6.4 kn
Time to the mark: 51 min
No. 425008 (worked solution)