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Worksheet 232 · Skill 6

Course to steer

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  1. You are at 243°T, 2.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.2 kn. The current sets 074°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 279°T, 3.3 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 8.0 kn. The current sets 163°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  

  3. You are at 271°T, 1.2 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.8 kn. The current sets 190°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  

  4. You are at 351°T, 1.0 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 7.3 kn. The current sets 212°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  

  5. You are at 011°T, 1.0 nm from Kittle water tank, bound for Green can "1". Your speed through the water is 5.6 kn. The current sets 063°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 329°T, 1.4 nm from Gannet Rock daybeacon, bound for Red nun "2". Your speed through the water is 8.6 kn. The current sets 292°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  

  7. You are at 081°T, 3.0 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 9.7 kn. The current sets 207°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 307°T, 2.1 nm from Tern Island tower, bound for Green can "3". Your speed through the water is 11.4 kn. The current sets 322°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  

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: 227 °T
Speed over the ground: 4.8 kn
Time to the mark: 32 min
No. 232001 (worked solution)
2Course to steer: 192 °T
Speed over the ground: 10.3 kn
Time to the mark: 21 min
No. 232002 (worked solution)
3Course to steer: 037 °T
Speed over the ground: 9.4 kn
Time to the mark: 32 min
No. 232003 (worked solution)
4Course to steer: 016 °T
Speed over the ground: 5.2 kn
Time to the mark: 68 min
No. 232004 (worked solution)
5Course to steer: 267 °T
Speed over the ground: 3.6 kn
Time to the mark: 118 min
No. 232005 (worked solution)
6Course to steer: 246 °T
Speed over the ground: 9.9 kn
Time to the mark: 26 min
No. 232006 (worked solution)
7Course to steer: 356 °T
Speed over the ground: 7.8 kn
Time to the mark: 26 min
No. 232007 (worked solution)
8Course to steer: 175 °T
Speed over the ground: 9.9 kn
Time to the mark: 17 min
No. 232008 (worked solution)