- nn a CHAPTER II, SECTION 5 SECTION 5 SCIENTIFIC STRUCTURES STATION 10 - ZERO STATION (BARGE) SITE FLORA CRATER - USER: DIRX GENER.’.L. In the original plan for the Operation, H& N was advised that barges with a stabilized platform to support certain scientific equipment would be required. Tests were conducted at the planned location to determine the characteristics of a 500-ton barge, both in regard to pitch and roll as well as anchorage. The first criteria. which covered the loading of the barges, were received on 15 January 1953. On 6 February 1953, H&N recommended using a 500-ton open lighter «ype barge and a sketch was submitted showing the load capacities and draft characteristics. On 27 March, H& N was instructed to purchese four 500 - ton barges. These barges (for Stations 10, 30, 40 and 90) were made available by the Commander, JTF 7 and accordingly were not purchased by the Contractor. Large stable platforms (with the limits of stability desired) could be constructed in lieu of barges but the costs would have been prohibitive and the advantages not commensurate. The barge stability and acceleration tests continued at Jobsite until 22 May. Station 10 was erected on a steel flush-deck cargo type non-propelled barge 120 feet long, 33 feet wide and 585 tons displacement. This Station consisted mainly of a steel frame super- structure supporting a platform deck approximately 33 feet wide by 44 feet long and located 20 feet above the barge deck. Scientific equipment \.as installed on the barge deck and in various areas on the platform deck. The area beneath the platform was enclosed by plywoodsheathed stud walls with a top connection designed to permit vertical deflection of the platform framing without inducing loads on the studs. Living quarters were provided on the barge deck and consisted of a single story woodframe building with plywood sheathed stud walls and a composition roof carrying a Navy cube for water supply. Reinforcement of the deck was required, both in the area beneath the hatch and at the winches. Sidewall reinforcement was added to some of the more heavily loaded columns. Thirty-two thousand pounds of coral ballast were required in the hold to balance the superimposed loads. MECHANICAL. Two 1 1/2-ton jib cranes. a 4 ton bridge crane and four gasoline engine-driven anchor winches were procured and installed. A 750-gallon diesel fuel oil tank was provided and included with the necessary equipment for the living and messing quarters. * lr tT M..,. $334,707 4 283,018 32 o Figure 2-70. Page 2-86 - apt? OY ELECTRICAL. Powe: was supplied by two portable 30KWdeisel engine generators. The design contemplated that both generators would be in Stations 10 and 40 at Barge Slip