3. Late in December 1955, after disoucsion with the preject personnel and Task Group 7.4, it was éscided that a contract should be let to the Hastings Instruxent Gompauy for the installation and operation of Raydist positioning equipeont. Chis equipment appeared to be extrenely simple in cosign and operation and would apperestly provide the desired accuracy in positioning the effects B-36 and B47, The contract prevrided for +he rental of the necessary ecuipmert plus the services of four Raydiat toohnicians to assist in the installation and operation of the equipment in the forward area, The equimment was assenbled hastily during damaary and shipped to the forward area, arriving approximately 2 February, Gumerous difficulties arese in connection with the instaliatian of the various electronic units at Bikini, Nost of theses difficulties could be traced to Lasufficient prepares tory work pricr te the movement overseas. Some units wore faulty, ethers were incorplete and a1} of the equipment wae highly susceptible te corrosion. Operations in the forward area were considerably by lack of proper security clearances for the Raydist technicians. it was necessary to provide en stcort fer these individwle and this restricted their mevenents, which resulted in ine adequate attention to the equipment during the installation period, Fortunstely, it was possible te install the master centro] station aboard the US8 Curtiss where a military Seoret clearance vas sufil- siet, Also, {t was possible to iustall one of the transmitter stations on Bikini Ieland where no special security olesrance was vequired. Tiw eceperation of the Comanding Officer of the USS Curties was responsible to a large degree for the gucceasful cpera- tion of the Raydiat equipment. After the third shot, the possibility of severe damage ta the Raydist stations because of wave action, plus the face that two of the remaining four shots were scheduled to be fired at Eniwetek, rosulted in a deaieion to move the Raydist equigewnt from Bikini te Eniwetek, This was acsouplished expediticualy and the oquipment was set: up under much more favorable conditions at Eniwetak sings it was possible to manualiy operate all but one of the statis, At Bikini all stations oxzoept the master atation had to be operated remctely, Unfortunately, ona of the two shots scheduled for Eniwetok was cancolled after the equip= went had bean moved, however, exoollent results wore obtained on tho Jest shot in the series which was fired st Enivetok. &. Tro drone Liberty ships, one of them equinped with an autovatio wash daw rystem, participated in b4be U4