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Worksheet 630 · 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 007°T, 1.7 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 340°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 040°T, 4.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 6.4 kn. The current sets 275°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  

  3. You are at 023°T, 2.6 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 8.1 kn. The current sets 238°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 225°T, 1.7 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.4 kn. The current sets 158°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  

  5. You are at 332°T, 2.6 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 8.8 kn. The current sets 150°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  

  6. You are at 299°T, 3.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 7.8 kn. The current sets 156°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  

  7. You are at 312°T, 3.0 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.3 kn. The current sets 242°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  

  8. You are at 306°T, 1.5 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 7.2 kn. The current sets 294°T at 2.0 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  

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: 234 °T
Speed over the ground: 5.1 kn
Time to the mark: 71 min
No. 630001 (worked solution)
2Course to steer: 145 °T
Speed over the ground: 5.4 kn
Time to the mark: 54 min
No. 630002 (worked solution)
3Course to steer: 099 °T
Speed over the ground: 6.8 kn
Time to the mark: 28 min
No. 630003 (worked solution)
4Course to steer: 297 °T
Speed over the ground: 6.3 kn
Time to the mark: 36 min
No. 630004 (worked solution)
5Course to steer: 285 °T
Speed over the ground: 7.3 kn
Time to the mark: 46 min
No. 630005 (worked solution)
6Course to steer: 076 °T
Speed over the ground: 8.5 kn
Time to the mark: 47 min
No. 630006 (worked solution)
7Course to steer: 084 °T
Speed over the ground: 4.2 kn
Time to the mark: 90 min
No. 630007 (worked solution)
8Course to steer: 314 °T
Speed over the ground: 9.1 kn
Time to the mark: 31 min
No. 630008 (worked solution)