stationary sea state free from swei.lj it was decided that an expert 

 wave-weath.er forecasting group siioiild be asked to advise on the 

 operation. The Division of Oceanography of the Uo S. Navy Hydro- 

 graphic Office was the logical group. 

 3o The pilots at NADU would have to be in.a.de a part of the operation 



as soon as possibleo 

 The last item was perhaps the most urgent because the key to the feasi- 

 bility of the entire undertaking was in the hands of the pilots at NADU, A 

 meeting was arranged for Aij.gast, 1954 at NADUj and WHOI and HYDRO pre- 

 sented the plan of operationo A day long discussion produced the following 

 results: 



1. The blimps were eliminated by nautual agreement of WHOI and NADU 

 because the caxnera installations were inaccessible, there would be 

 excessive vibrationsj form.ation flying would be difficult and their 

 radius of operation is restricted by short range and low flying speed. 



2. A pair of PZV's v/as offered as an alternative. The advantages were 

 that they could .Oiy in most winds up to gale force with a speed in ex- 

 cess of 150 kts, that photographic facilities were available, that they 

 had much greater range with 14 hrs flying time, that formation flight 

 was not difficult and that the necessary radio and power equipment 

 was available. 



3o NADU was able to determiine stereo-baseline by a gunsight technique. 



When the planes are spaced a Pleasured distance on the ground, the 



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