at Biijiri, the y~.17 ws moored at successive lagoon sites for the constructionof the triangulationstation and the photo tower and generator platform foundations. Constmction Of the caussway was carried on concurrentlywith the work at the lagoon sites, approximatelyonehalf of the crew working at each site. TriangulationStation. ThS position of the station at longitude 162° 17~ lo~fwst, latitude 11° 32t 25’1North, near ‘Wuoy 15,” (reference Sheet No. 6033, Ehiwetok Atoll> U. S. Navy, HYdrograp~c Office) had been selectedas satisfytigthe requirementsfor first-order triangulation. The exact site was located by inspection,and was such that a minhum of clearing of coral heads would permit a small boat to land men and Instrumentsunder all tide and weather conditions. The YCV-17 was moved to the site on 7 January 1948, but rough water and high winds prevented driving of sheets until two days later. On that day, two 25-foot long Ml12 sheets were driven. About 8-foot penetrationwas obtained. These piles had sufficient holding power to permit lacing of the remaining 3L sheets of the cell. Three days later all pfles ~d been set and driven, even though rough water ad 25 to 30 knot winds hmpered operations. Penetration of the renmining sheets averaged four feet. Six days were required fcr placing all bracing, pourtig concrete, providing an ● ccesa ladder, and blaating a clear charnel to the cell. The triangulationstation was inspected and accepted on 19 Jan 48. (For detafled plans, see Drawing &50. ) Photo Tower and Generator Platform Foundations. The location of the photo tower at longitude 1620 15~ On East, latitude 11° 33’ o“ North 50 Section XVI