![]() ![]() This work resulted in yet a new appearance for the Trieste II, and included the installation of a new pressure sphere, designed for operation to 20,000 feet (6,100 m).Īs the bathyscaphe continued her operations as a test vehicle for the deep submergence program, she qualified four officers as "hydronauts" – the beginning of a burgeoning oceanographic operation. She recovered bits of wreckage, positively fixing the remains as that of the lost Thresher, in September 1964.īetween September 1965 and May 1966, Trieste II again underwent extensive modification and conversion at Mare Island Naval Shipyard, but there is no clear record that she was ever operated in that new configuration, i.e., the addition of skegs or outriggers on both sides of the sphere.ĭuring that same time period, work was under way on a third configuration of the bathyscaphe. Frank Andrews, Trieste II conducted dives in the vicinity of the loss site of Thresher – operations commenced by the first Trieste the year before. McGraw (T-AK241) and shipped, via the Panama Canal, to Boston.Ĭommanded by Lt Comdr. ![]() Completed in early 1964, Trieste II was placed on board USNS Francis X. ![]() The Trieste sphere was suspended from an entirely new float, more seaworthy and streamlined than the original, but operating on identical principles. Trieste II incorporated the original Terni, Italian-built sphere used in Trieste, after it was made redundant by the new high-pressure sphere cast by the German Krupp Steelworks. The original Trieste design was heavily modified by the Naval Electronics Laboratory in San Diego, California and built at the Mare Island Naval Shipyard. Trieste II (DSV-1) was the successor to Trieste – the United States Navy's first bathyscaphe purchased from its Swiss designers. JSTOR ( June 2023) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed.įind sources: "Trieste II" Bathyscaphe – news Please help improve this article by adding citations to reliable sources. This article needs additional citations for verification. ![]()
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