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Worksheet 328 · Skill 6

Course to steer

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  1. You are at 035°T, 3.9 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 10.2 kn. The current sets 348°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 072°T, 3.0 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 9.0 kn. The current sets 254°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  

  3. You are at 037°T, 1.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.1 kn. The current sets 316°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  

  4. You are at 023°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.7 kn. The current sets 169°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  

  5. You are at 323°T, 2.0 nm from Mill stack, bound for Red nun "2". Your speed through the water is 7.4 kn. The current sets 105°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  

  6. You are at 219°T, 2.2 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.1 kn. The current sets 245°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  

  7. You are at 270°T, 2.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.5 kn. The current sets 222°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  

  8. You are at 070°T, 2.7 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 7.9 kn. The current sets 001°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  

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: 143 °T
Speed over the ground: 8.5 kn
Time to the mark: 35 min
No. 328001 (worked solution)
2Course to steer: 353 °T
Speed over the ground: 8.9 kn
Time to the mark: 20 min
No. 328002 (worked solution)
3Course to steer: 128 °T
Speed over the ground: 3.9 kn
Time to the mark: 65 min
No. 328003 (worked solution)
4Course to steer: 257 °T
Speed over the ground: 7.8 kn
Time to the mark: 51 min
No. 328004 (worked solution)
5Course to steer: 352 °T
Speed over the ground: 7.0 kn
Time to the mark: 18 min
No. 328005 (worked solution)
6Course to steer: 309 °T
Speed over the ground: 8.1 kn
Time to the mark: 28 min
No. 328006 (worked solution)
7Course to steer: 275 °T
Speed over the ground: 6.9 kn
Time to the mark: 22 min
No. 328007 (worked solution)
8Course to steer: 035 °T
Speed over the ground: 9.0 kn
Time to the mark: 15 min
No. 328008 (worked solution)