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Worksheet 533 · Skill 6

Course to steer

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  1. You are at 072°T, 1.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.1 kn. The current sets 351°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 309°T, 2.8 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 6.9 kn. The current sets 054°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 070°T, 1.2 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 7.2 kn. The current sets 003°T at 0.7 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  

  4. You are at 264°T, 1.6 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 9.1 kn. The current sets 324°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  

  5. You are at 322°T, 3.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.2 kn. The current sets 242°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  

  6. You are at 036°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.8 kn. The current sets 341°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 025°T, 3.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.2 kn. The current sets 208°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 099°T, 1.2 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.3 kn. The current sets 256°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: 109 °T
Speed over the ground: 4.9 kn
Time to the mark: 52 min
No. 533001 (worked solution)
2Course to steer: 191 °T
Speed over the ground: 5.4 kn
Time to the mark: 38 min
No. 533002 (worked solution)
3Course to steer: 050 °T
Speed over the ground: 7.7 kn
Time to the mark: 28 min
No. 533003 (worked solution)
4Course to steer: 293 °T
Speed over the ground: 11.1 kn
Time to the mark: 12 min
No. 533004 (worked solution)
5Course to steer: 096 °T
Speed over the ground: 5.6 kn
Time to the mark: 64 min
No. 533005 (worked solution)
6Course to steer: 247 °T
Speed over the ground: 8.9 kn
Time to the mark: 31 min
No. 533006 (worked solution)
7Course to steer: 125 °T
Speed over the ground: 11.3 kn
Time to the mark: 29 min
No. 533007 (worked solution)
8Course to steer: 091 °T
Speed over the ground: 9.2 kn
Time to the mark: 29 min
No. 533008 (worked solution)