E. Recording Wave Staff Data 



After the last wave trace, a line should be drawn across the 

 chart paper to separate this run from subsequent ones. All printing 

 should be done with the curved lines of the chart paper bowed out 

 to the right and placed to the left of the last wave trace. The 

 following information should be printed in ink on the recorder 

 chart paper. 



1. Ship, cruise, and wave observation serial number followed 

 by the letter W. 



2. Date: Give day, month, and year, 



3. Tine: Use G. M, T. Record the hour and minute at beginning 

 of run and again at end of run. 



k. Position: Give latitude and longitude of the observation. 



5. Wind velocity in knots and direction in degrees true. 



6. If known, give the current velocity in knots and direction 

 in degrees true. 



7. Give apparent direction of wave motion in degrees true. 



8. Record variac setting. 



9. Record wave staff serial number (located on cable outlet), 



III. RECOMMENDATIONS 



It is considered feasible to adapt the Electric Wave Staff 

 for use with a radio buoy link to eliminate the dependence of the 

 recording time on the length of cable usable in practical opera- 

 tion. 



IV. ACKNOWLEDGEMENT 



The writer expresses his gratitude to the Beach Erosion Board 

 for their excellent cooperation during the construction of this 

 instrument, to the University of California Fluid Mechanics Labo- 

 ratory for their work in the development of the £0-Fo6t Damping 

 Disk System, and to the Naval Ordnance Laboratory for providing 

 facilities for a field test of the instrument* 



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