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Worksheet 475 · Skill 6

Course to steer

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Plot Pass worksheet. Plot Pass $1.95/month or $19.50/year · Free during preview. Plotroom · cedarpointmarina.net · invented chart, not for navigation.

  1. You are at 140°T, 1.6 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.1 kn. The current sets 229°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  

  2. You are at 140°T, 1.5 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 8.5 kn. The current sets 332°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  

  3. You are at 355°T, 2.3 nm from Mill stack, bound for Green can "3". Your speed through the water is 9.9 kn. The current sets 254°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  

  4. You are at 019°T, 1.7 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 11.2 kn. The current sets 080°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  

  5. You are at 048°T, 3.3 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.3 kn. The current sets 309°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  

  6. You are at 116°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.2 kn. The current sets 282°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  

  7. You are at 233°T, 2.3 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.7 kn. The current sets 018°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  

  8. You are at 024°T, 2.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 7.7 kn. The current sets 298°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  

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: 019 °T
Speed over the ground: 9.6 kn
Time to the mark: 32 min
No. 475001 (worked solution)
2Course to steer: 024 °T
Speed over the ground: 9.9 kn
Time to the mark: 31 min
No. 475002 (worked solution)
3Course to steer: 014 °T
Speed over the ground: 9.3 kn
Time to the mark: 15 min
No. 475003 (worked solution)
4Course to steer: 136 °T
Speed over the ground: 12.3 kn
Time to the mark: 23 min
No. 475004 (worked solution)
5Course to steer: 149 °T
Speed over the ground: 4.4 kn
Time to the mark: 56 min
No. 475005 (worked solution)
6Course to steer: 240 °T
Speed over the ground: 7.9 kn
Time to the mark: 42 min
No. 475006 (worked solution)
7Course to steer: 268 °T
Speed over the ground: 8.2 kn
Time to the mark: 27 min
No. 475007 (worked solution)
8Course to steer: 234 °T
Speed over the ground: 8.6 kn
Time to the mark: 50 min
No. 475008 (worked solution)