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Worksheet 111 · Skill 6

Course to steer

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  1. You are at 309°T, 3.2 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 6.3 kn. The current sets 190°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  

  2. You are at 000°T, 1.2 nm from Tern Island tower, bound for Bell buoy "HS". Your speed through the water is 11.7 kn. The current sets 009°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  

  3. You are at 267°T, 2.8 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 6.6 kn. The current sets 145°T at 0.6 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 246°T, 1.6 nm from Tern Island tower, bound for Green can "1". Your speed through the water is 5.3 kn. The current sets 232°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 030°T, 1.3 nm from Kittle water tank, bound for Bell buoy "HS". Your speed through the water is 8.8 kn. The current sets 094°T at 0.5 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 035°T, 1.6 nm from Gannet Rock daybeacon, bound for Bell buoy "HS". Your speed through the water is 10.4 kn. The current sets 314°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 019°T, 3.5 nm from Westfield church spire, bound for Red nun "2". Your speed through the water is 8.0 kn. The current sets 295°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  

  8. You are at 301°T, 4.1 nm from Tern Island tower, bound for Red nun "2". Your speed through the water is 8.1 kn. The current sets 317°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: 080 °T
Speed over the ground: 5.9 kn
Time to the mark: 66 min
No. 111001 (worked solution)
2Course to steer: 097 °T
Speed over the ground: 11.9 kn
Time to the mark: 20 min
No. 111002 (worked solution)
3Course to steer: 199 °T
Speed over the ground: 7.0 kn
Time to the mark: 26 min
No. 111003 (worked solution)
4Course to steer: 217 °T
Speed over the ground: 7.4 kn
Time to the mark: 26 min
No. 111004 (worked solution)
5Course to steer: 358 °T
Speed over the ground: 8.8 kn
Time to the mark: 39 min
No. 111005 (worked solution)
6Course to steer: 032 °T
Speed over the ground: 10.6 kn
Time to the mark: 16 min
No. 111006 (worked solution)
7Course to steer: 142 °T
Speed over the ground: 7.1 kn
Time to the mark: 48 min
No. 111007 (worked solution)
8Course to steer: 163 °T
Speed over the ground: 6.0 kn
Time to the mark: 46 min
No. 111008 (worked solution)