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Worksheet 316 · Skill 6

Course to steer

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  1. You are at 320°T, 2.5 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.5 kn. The current sets 202°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  

  2. You are at 288°T, 3.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.1 kn. The current sets 346°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  

  3. You are at 357°T, 1.8 nm from Kittle water tank, bound for Green can "3". Your speed through the water is 6.6 kn. The current sets 250°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  

  4. You are at 105°T, 1.9 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.3 kn. The current sets 311°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 069°T, 1.9 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.7 kn. The current sets 315°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  

  6. You are at 271°T, 2.4 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 6.5 kn. The current sets 228°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 139°T, 2.4 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.1 kn. The current sets 116°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  

  8. You are at 061°T, 2.1 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 9.0 kn. The current sets 272°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  

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: 176 °T
Speed over the ground: 6.8 kn
Time to the mark: 31 min
No. 316001 (worked solution)
2Course to steer: 182 °T
Speed over the ground: 3.9 kn
Time to the mark: 62 min
No. 316002 (worked solution)
3Course to steer: 306 °T
Speed over the ground: 8.0 kn
Time to the mark: 40 min
No. 316003 (worked solution)
4Course to steer: 229 °T
Speed over the ground: 6.8 kn
Time to the mark: 53 min
No. 316004 (worked solution)
5Course to steer: 115 °T
Speed over the ground: 5.7 kn
Time to the mark: 42 min
No. 316005 (worked solution)
6Course to steer: 268 °T
Speed over the ground: 8.4 kn
Time to the mark: 22 min
No. 316006 (worked solution)
7Course to steer: 026 °T
Speed over the ground: 11.3 kn
Time to the mark: 21 min
No. 316007 (worked solution)
8Course to steer: 254 °T
Speed over the ground: 11.3 kn
Time to the mark: 39 min
No. 316008 (worked solution)