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Worksheet 51 · Skill 6

Course to steer

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  1. You are at 282°T, 1.5 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 7.2 kn. The current sets 015°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  

  2. You are at 025°T, 2.7 nm from Mill stack, bound for Red nun "2". Your speed through the water is 7.7 kn. The current sets 105°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 043°T, 4.2 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.9 kn. The current sets 102°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  

  4. You are at 274°T, 3.0 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.2 kn. The current sets 289°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  

  5. You are at 309°T, 1.9 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 6.9 kn. The current sets 298°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  

  6. You are at 077°T, 2.6 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.5 kn. The current sets 239°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 065°T, 3.2 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 7.4 kn. The current sets 246°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  

  8. You are at 046°T, 2.4 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 6.4 kn. The current sets 157°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  

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: 053 °T
Speed over the ground: 8.5 kn
Time to the mark: 36 min
No. 51001 (worked solution)
2Course to steer: 294 °T
Speed over the ground: 5.4 kn
Time to the mark: 29 min
No. 51002 (worked solution)
3Course to steer: 174 °T
Speed over the ground: 8.6 kn
Time to the mark: 33 min
No. 51003 (worked solution)
4Course to steer: 138 °T
Speed over the ground: 9.4 kn
Time to the mark: 14 min
No. 51004 (worked solution)
5Course to steer: 173 °T
Speed over the ground: 6.2 kn
Time to the mark: 27 min
No. 51005 (worked solution)
6Course to steer: 132 °T
Speed over the ground: 7.3 kn
Time to the mark: 22 min
No. 51006 (worked solution)
7Course to steer: 272 °T
Speed over the ground: 9.3 kn
Time to the mark: 41 min
No. 51007 (worked solution)
8Course to steer: 275 °T
Speed over the ground: 5.9 kn
Time to the mark: 54 min
No. 51008 (worked solution)