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Worksheet 363 · Skill 6

Course to steer

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  1. You are at 049°T, 4.3 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 9.9 kn. The current sets 250°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  

  2. You are at 082°T, 2.8 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 6.0 kn. The current sets 174°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  

  3. You are at 105°T, 2.8 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 9.6 kn. The current sets 197°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 038°T, 1.8 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 11.3 kn. The current sets 324°T at 1.6 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 259°T, 1.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.7 kn. The current sets 173°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 205°T, 2.4 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 7.0 kn. The current sets 117°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 206°T, 2.0 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.5 kn. The current sets 040°T at 0.8 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  

  8. You are at 348°T, 1.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 7.0 kn. The current sets 110°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  

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: 171 °T
Speed over the ground: 10.1 kn
Time to the mark: 29 min
No. 363001 (worked solution)
2Course to steer: 155 °T
Speed over the ground: 7.3 kn
Time to the mark: 21 min
No. 363002 (worked solution)
3Course to steer: 073 °T
Speed over the ground: 8.6 kn
Time to the mark: 20 min
No. 363003 (worked solution)
4Course to steer: 245 °T
Speed over the ground: 11.7 kn
Time to the mark: 35 min
No. 363004 (worked solution)
5Course to steer: 233 °T
Speed over the ground: 8.2 kn
Time to the mark: 26 min
No. 363005 (worked solution)
6Course to steer: 262 °T
Speed over the ground: 5.6 kn
Time to the mark: 30 min
No. 363006 (worked solution)
7Course to steer: 248 °T
Speed over the ground: 5.8 kn
Time to the mark: 23 min
No. 363007 (worked solution)
8Course to steer: 260 °T
Speed over the ground: 5.8 kn
Time to the mark: 48 min
No. 363008 (worked solution)