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Worksheet 740 · Skill 6

Course to steer

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  1. You are at 131°T, 1.8 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 11.9 kn. The current sets 336°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  

  2. You are at 015°T, 1.9 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 11.2 kn. The current sets 181°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  

  3. You are at 329°T, 2.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.0 kn. The current sets 151°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 184°T, 1.3 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 9.9 kn. The current sets 240°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  

  5. You are at 336°T, 2.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.6 kn. The current sets 164°T at 1.5 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  

  6. You are at 074°T, 3.0 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.4 kn. The current sets 193°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  

  7. You are at 084°T, 2.3 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 9.8 kn. The current sets 061°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  

  8. You are at 010°T, 1.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 5.2 kn. The current sets 069°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  

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: 087 °T
Speed over the ground: 11.5 kn
Time to the mark: 22 min
No. 740001 (worked solution)
2Course to steer: 256 °T
Speed over the ground: 11.5 kn
Time to the mark: 29 min
No. 740002 (worked solution)
3Course to steer: 091 °T
Speed over the ground: 12.3 kn
Time to the mark: 27 min
No. 740003 (worked solution)
4Course to steer: 312 °T
Speed over the ground: 10.6 kn
Time to the mark: 23 min
No. 740004 (worked solution)
5Course to steer: 218 °T
Speed over the ground: 8.6 kn
Time to the mark: 40 min
No. 740005 (worked solution)
6Course to steer: 107 °T
Speed over the ground: 7.6 kn
Time to the mark: 24 min
No. 740006 (worked solution)
7Course to steer: 352 °T
Speed over the ground: 10.3 kn
Time to the mark: 21 min
No. 740007 (worked solution)
8Course to steer: 153 °T
Speed over the ground: 5.7 kn
Time to the mark: 50 min
No. 740008 (worked solution)