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Worksheet 165 · Skill 6

Course to steer

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  1. You are at 079°T, 2.4 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 9.1 kn. The current sets 357°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  

  2. You are at 259°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.7 kn. The current sets 230°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 351°T, 1.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.7 kn. The current sets 209°T at 1.9 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  

  4. You are at 023°T, 2.2 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 6.1 kn. The current sets 009°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  

  5. You are at 039°T, 2.6 nm from Heron Point Light, bound for Green can "3". Your speed through the water is 5.4 kn. The current sets 012°T at 0.7 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  

  6. You are at 285°T, 2.0 nm from Gannet Rock daybeacon, bound for Green can "1". Your speed through the water is 8.9 kn. The current sets 206°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 039°T, 1.3 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.9 kn. The current sets 153°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 202°T, 2.2 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 9.4 kn. The current sets 175°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  

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: 141 °T
Speed over the ground: 7.8 kn
Time to the mark: 21 min
No. 165001 (worked solution)
2Course to steer: 213 °T
Speed over the ground: 12.0 kn
Time to the mark: 17 min
No. 165002 (worked solution)
3Course to steer: 262 °T
Speed over the ground: 10.9 kn
Time to the mark: 26 min
No. 165003 (worked solution)
4Course to steer: 239 °T
Speed over the ground: 5.3 kn
Time to the mark: 68 min
No. 165004 (worked solution)
5Course to steer: 073 °T
Speed over the ground: 5.8 kn
Time to the mark: 23 min
No. 165005 (worked solution)
6Course to steer: 256 °T
Speed over the ground: 9.5 kn
Time to the mark: 23 min
No. 165006 (worked solution)
7Course to steer: 273 °T
Speed over the ground: 9.0 kn
Time to the mark: 38 min
No. 165007 (worked solution)
8Course to steer: 259 °T
Speed over the ground: 9.7 kn
Time to the mark: 18 min
No. 165008 (worked solution)