CONTENTS-Continued 



FIGURES 



Page 



6 Case 3-D, fp and f^ versus phase angle 17 



7 Engineering drawing of sea sled 20 



8 Reference axes for sensor alinement 23 



9 B-10 current meter with schematic 25 



10 Diagram reed switches and closure sequence 26 



11 B-7 sensor 27 



12 Response curve, B-10 sensor ..... 28 



13 Photos of wave gage 29 



14 Batteries, charger, and cylinder for power package 31 



15 Bulkhead connectors 32 



16 Generalized schematic of onboard electronics 33 



17 Instrument package and cylinder 34 



18 Transmitter 34 



19 Onshore electronics 35 



20 Flow diagram, instrument components 37 



21 Data logger with enlargement of control and monitoring 



panel 38 



22 Magnetic tape recorder and specifications 40 



23 B-7 sensor, V max versus A max 44 



24 B-7 sensor, V max versus A m j Ln 45 



25 Phase lag versus frequency 27 



26 True cosine response curve and actual B-10 sensor response. ... 48 



27 Field testing of current meters 49 



28 Experimental grid for sea sled experiments 51 



