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Worksheet 93 · Skill 6

Course to steer

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  1. You are at 219°T, 1.9 nm from Gannet Rock daybeacon, bound for Green can "3". Your speed through the water is 9.0 kn. The current sets 064°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  

  2. You are at 146°T, 1.5 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 9.2 kn. The current sets 358°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  

  3. You are at 065°T, 3.0 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 10.1 kn. The current sets 354°T at 1.3 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 156°T, 2.6 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 10.4 kn. The current sets 053°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  

  5. You are at 269°T, 3.5 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 10.1 kn. The current sets 175°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  

  6. You are at 057°T, 1.8 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 5.3 kn. The current sets 334°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  

  7. You are at 270°T, 3.4 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 7.2 kn. The current sets 294°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  

  8. You are at 021°T, 2.1 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 5.5 kn. The current sets 045°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  

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: 307 °T
Speed over the ground: 8.4 kn
Time to the mark: 24 min
No. 93001 (worked solution)
2Course to steer: 278 °T
Speed over the ground: 9.3 kn
Time to the mark: 37 min
No. 93002 (worked solution)
3Course to steer: 152 °T
Speed over the ground: 8.9 kn
Time to the mark: 21 min
No. 93003 (worked solution)
4Course to steer: 263 °T
Speed over the ground: 8.9 kn
Time to the mark: 27 min
No. 93004 (worked solution)
5Course to steer: 124 °T
Speed over the ground: 11.2 kn
Time to the mark: 13 min
No. 93005 (worked solution)
6Course to steer: 030 °T
Speed over the ground: 6.9 kn
Time to the mark: 25 min
No. 93006 (worked solution)
7Course to steer: 130 °T
Speed over the ground: 5.9 kn
Time to the mark: 24 min
No. 93007 (worked solution)
8Course to steer: 343 °T
Speed over the ground: 7.0 kn
Time to the mark: 42 min
No. 93008 (worked solution)