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Worksheet 55 · Skill 6

Course to steer

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  1. You are at 115°T, 1.9 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 11.7 kn. The current sets 259°T at 2.5 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  

  2. You are at 188°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 10.0 kn. The current sets 263°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  

  3. You are at 299°T, 3.3 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.5 kn. The current sets 045°T at 2.5 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  

  4. You are at 303°T, 2.0 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.2 kn. The current sets 237°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 284°T, 2.8 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 5.3 kn. The current sets 259°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  

  6. You are at 008°T, 2.2 nm from Mill stack, bound for Green can "1". Your speed through the water is 7.0 kn. The current sets 307°T at 1.7 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  

  7. You are at 212°T, 1.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 11.9 kn. The current sets 014°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  

  8. You are at 072°T, 1.0 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 5.3 kn. The current sets 016°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  

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: 018 °T
Speed over the ground: 10.7 kn
Time to the mark: 26 min
No. 55001 (worked solution)
2Course to steer: 242 °T
Speed over the ground: 12.3 kn
Time to the mark: 18 min
No. 55002 (worked solution)
3Course to steer: 184 °T
Speed over the ground: 4.0 kn
Time to the mark: 52 min
No. 55003 (worked solution)
4Course to steer: 197 °T
Speed over the ground: 7.5 kn
Time to the mark: 37 min
No. 55004 (worked solution)
5Course to steer: 137 °T
Speed over the ground: 4.6 kn
Time to the mark: 33 min
No. 55005 (worked solution)
6Course to steer: 290 °T
Speed over the ground: 8.6 kn
Time to the mark: 16 min
No. 55006 (worked solution)
7Course to steer: 295 °T
Speed over the ground: 12.4 kn
Time to the mark: 17 min
No. 55007 (worked solution)
8Course to steer: 110 °T
Speed over the ground: 5.3 kn
Time to the mark: 53 min
No. 55008 (worked solution)