vations for transmission to the U. S. Navy Hydrographic Office-o The plan 



was that with the advent of predicted acceptable wave conditions, the 



ATLANTIS would steam toward the forecast point in order to arrive when 



wave conditions were favorable. 



In order to make SWOP a successful operation, it was necessary 



all four specifications be met. A note of pessimism was injected into the 



selection of 40N-65W as a site because of the type of meteorological con= 



ditions expected to prevail at the time wave conditions would be favorable, 



During the month of October in the area 40N-65Wi, wave generation would 



be accomplished by low systems moving up the east coast, accompanied 



by precipitation and low ceilings. Such conditions would preclude the ex= 



ecution of operation SWOP even though acceptable wave conditions were 



present. The realization that favorable wave conditions wwuld exist in 



conjunction with unfavorable meteorological conditions made additional 



planning necessary. It was decided to carry out the photography when the 



low system was moving out of the operational area and the ceiling began 



to rise, but before the wind waves began to subside. This required accu- 



rkte timing and a high degree of coordination between the Project Coordi= 



nator W. Marks of WHOI, the Photographic Planes, the R, V, ATLANTB, 



and wave forecasting personnel at the U. S. Navy Hydrographic Office. 



The general plan for communication between the cooperating agencies, as 



subnntitted by Mr. Marks, indicated that the necessary timing could be 



accomplished. The wave forecasters at the Hydrographic Office were 



33 



