1. Effects of Ship’s Envelope on Wind Measurements
LT Tim Anderson
OC3570
19 March 2001

2. Pt. Sur Dimensions Main dimensions Length OA: 41.15m Breadth: 9.75m
Freeboard to working deck: 0.0m
Max. draft: 2.74m

3. Pt. Sur Deck

4. Methodology AN/PMQ-3C hand held anemometer Windbird ship sensor
Measurement/recording process
Measurement positions

6. Wind Measurements: Direction

7. Wind Measurements: Speed

8. Wind Magnitudes: X velocity

9. Wind Magnitudes: Y Component

10. Position #1

11. Position #2

12. Position #3

13. Position #4

14. Position #5

15. Position #6

16. Position #7

17. Position #8

18. Conclusions No definitive wind pattern
Multiple possible sources of errors
Differences in wind at varied heights
Simultaneous Measurements required
Ship’s structure creates varied wind effects
Multiple variables determine ship’s effects