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Welcome to the United States Power Squadrons' Chart Smart Seminar

Welcome to the United States Power Squadrons' Chart Smart Seminar. Piloting - Distance, Speed, Time (Section 6). Section 5: Piloting - Distance, Speed, Time The DST Formula Alternative Method of Using 60D=ST. Class Agenda - cont'd. D = Distance (in nautical miles - nm).

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Welcome to the United States Power Squadrons' Chart Smart Seminar

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  1. Welcometo the • United States Power Squadrons' • Chart Smart Seminar Piloting - Distance, Speed, Time (Section 6)

  2. Section 5: Piloting - Distance, Speed, Time The DST Formula Alternative Method of Using 60D=ST Class Agenda - cont'd

  3. D = Distance (in nautical miles - nm) S = Speed (in knots - kn) T = Time (in minutes - m) THE 60 x D = S x T FORMULA

  4. 60 x D S T S x T 60 x D 60 x D S = D = T = 60 S T Alternative Method of Using the 60 x D = S x T Formula

  5. Calculating Distance • How far will your boat go if you run at 10 knots for 30 minutes? • Formula: 60 x D = S x T • 60 x D = 10 x 30 • 60 x D = 300 • D = 5.0 nm

  6. Distance Measurement -"Walking" the Dividers

  7. D 11.2 Labeling a Course Line For Distance C 067 Course 067° true Distance to next objective 11.2 nautical miles

  8. D 11.2 Labeling a Course Line For Distance C 247 Course 247° true (reciprocal of 067°) Distance to next objective 11.2 nautical miles

  9. Calculating Speed • What was your boat speed if it took you 40 minutes to run 8 nautical miles? • Formula: 60 x D = S x T • 60 x 8 = S x 40 • 480 = S x 40 • S = 12.0 kn

  10. D 11.2 Labeling a Course Line For Speed C 067 S 12.0 Course 067° true, Speed 12.0 kn Speed is placed beneath the course line and near the beginning of the course

  11. D 11.2 Labeling a Course Line For Speed C 247 S 12.0 Course 247° true (reciprocal of 067°) Speed is placed beneath the course line and near the beginning of the course

  12. Calculating Time • How long will it take you to go 5 nautical miles at 10 knots? • Formula: 60 x D = S x T • 60 x 5 = 10 x T • 300 = 10 x T • T = 30 m

  13. 0000 2400 1100 0100 1000 0200 1200 2300 1300 2200 1400 0900 2100 1500 0300 2000 1600 1900 1700 0800 0400 1800 0700 0500 0600 24 - Hour Clock

  14. Calculating Time Arrive: 1572 1612  Depart: 1047 1047 ——— 0525 (5h 25m) Elapsed Time:

  15. Calculating Time Depart: 2200 Elapsed Time: 1030 ——— Arrive: 3230 - 2400  0830 (next day)

  16. End of Section 6 Piloting - Distance, Speed, Time

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