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Worksheet 74 · Skill 6

Course to steer

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  1. You are at 104°T, 2.3 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 7.0 kn. The current sets 016°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  

  2. You are at 008°T, 1.2 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 7.2 kn. The current sets 168°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  

  3. You are at 083°T, 2.4 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 11.6 kn. The current sets 249°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  

  4. You are at 222°T, 2.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.6 kn. The current sets 143°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 001°T, 1.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 5.0 kn. The current sets 193°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  

  6. You are at 319°T, 1.4 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 7.2 kn. The current sets 064°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  

  7. You are at 069°T, 1.7 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 10.5 kn. The current sets 029°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  

  8. You are at 053°T, 2.6 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.4 kn. The current sets 019°T at 1.0 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: 107 °T
Speed over the ground: 7.3 kn
Time to the mark: 28 min
No. 74001 (worked solution)
2Course to steer: 122 °T
Speed over the ground: 8.8 kn
Time to the mark: 32 min
No. 74002 (worked solution)
3Course to steer: 139 °T
Speed over the ground: 11.0 kn
Time to the mark: 14 min
No. 74003 (worked solution)
4Course to steer: 304 °T
Speed over the ground: 8.1 kn
Time to the mark: 27 min
No. 74004 (worked solution)
5Course to steer: 099 °T
Speed over the ground: 5.3 kn
Time to the mark: 58 min
No. 74005 (worked solution)
6Course to steer: 217 °T
Speed over the ground: 5.8 kn
Time to the mark: 43 min
No. 74006 (worked solution)
7Course to steer: 083 °T
Speed over the ground: 11.9 kn
Time to the mark: 13 min
No. 74007 (worked solution)
8Course to steer: 250 °T
Speed over the ground: 5.8 kn
Time to the mark: 73 min
No. 74008 (worked solution)