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Worksheet 233 · Skill 6

Course to steer

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  1. You are at 159°T, 1.5 nm from Westfield church spire, bound for Green can "1". Your speed through the water is 8.9 kn. The current sets 195°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 024°T, 2.0 nm from Mill stack, bound for Red nun "2". Your speed through the water is 11.8 kn. The current sets 089°T at 1.1 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 334°T, 2.0 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 6.0 kn. The current sets 253°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 040°T, 3.8 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.5 kn. The current sets 261°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  

  5. You are at 076°T, 1.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 7.7 kn. The current sets 073°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 337°T, 1.7 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.2 kn. The current sets 164°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 055°T, 2.6 nm from Westfield church spire, bound for Green can "3". Your speed through the water is 6.5 kn. The current sets 175°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  

  8. You are at 091°T, 2.6 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 6.9 kn. The current sets 145°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  

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: 092 °T
Speed over the ground: 8.7 kn
Time to the mark: 22 min
No. 233001 (worked solution)
2Course to steer: 309 °T
Speed over the ground: 11.0 kn
Time to the mark: 15 min
No. 233002 (worked solution)
3Course to steer: 189 °T
Speed over the ground: 7.4 kn
Time to the mark: 39 min
No. 233003 (worked solution)
4Course to steer: 139 °T
Speed over the ground: 6.5 kn
Time to the mark: 43 min
No. 233004 (worked solution)
5Course to steer: 129 °T
Speed over the ground: 8.6 kn
Time to the mark: 24 min
No. 233005 (worked solution)
6Course to steer: 216 °T
Speed over the ground: 11.2 kn
Time to the mark: 25 min
No. 233006 (worked solution)
7Course to steer: 101 °T
Speed over the ground: 7.6 kn
Time to the mark: 32 min
No. 233007 (worked solution)
8Course to steer: 348 °T
Speed over the ground: 5.5 kn
Time to the mark: 43 min
No. 233008 (worked solution)