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Worksheet 433 · Skill 6

Course to steer

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  1. You are at 343°T, 2.1 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.1 kn. The current sets 098°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  

  2. You are at 359°T, 1.8 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.0 kn. The current sets 204°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  

  3. You are at 047°T, 0.9 nm from Heron Point Light, bound for Red nun "2". Your speed through the water is 9.2 kn. The current sets 252°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  

  4. You are at 037°T, 2.1 nm from Mill stack, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 245°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  

  5. You are at 016°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 10.5 kn. The current sets 317°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  

  6. You are at 287°T, 3.3 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 5.0 kn. The current sets 356°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  

  7. You are at 045°T, 3.5 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 8.0 kn. The current sets 049°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  

  8. You are at 065°T, 3.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.2 kn. The current sets 297°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: 222 °T
Speed over the ground: 6.2 kn
Time to the mark: 49 min
No. 433001 (worked solution)
2Course to steer: 044 °T
Speed over the ground: 8.3 kn
Time to the mark: 22 min
No. 433002 (worked solution)
3Course to steer: 056 °T
Speed over the ground: 7.4 kn
Time to the mark: 18 min
No. 433003 (worked solution)
4Course to steer: 302 °T
Speed over the ground: 5.8 kn
Time to the mark: 35 min
No. 433004 (worked solution)
5Course to steer: 250 °T
Speed over the ground: 11.1 kn
Time to the mark: 22 min
No. 433005 (worked solution)
6Course to steer: 107 °T
Speed over the ground: 4.7 kn
Time to the mark: 92 min
No. 433006 (worked solution)
7Course to steer: 250 °T
Speed over the ground: 6.4 kn
Time to the mark: 58 min
No. 433007 (worked solution)
8Course to steer: 125 °T
Speed over the ground: 3.0 kn
Time to the mark: 61 min
No. 433008 (worked solution)