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Trieste II was designed by the Naval Electronic Laboratory, San Diego, California, as a successor to Trieste —the Navy's pioneer bathyscape. Built at the Mare Island Naval Shipyard, Trieste II incorporated the Terni, Italian-built sphere used in Trieste with an entirely new bathyscaph float-one more seaworthy and streamlined. Completed in early 1964, Trieste II was placed on board USNS Francis X. MoGraw (T-AK241) and shipped, via the Panama Canal, to Boston. Image File history File links Trieste_ii. ...
Image File history File links Trieste_ii. ...
City nickname: Americas Finest City Location Location of San Diego within San Diego County Government County San Diego Mayor Vacant Physical characteristics Area Land Water 372. ...
The Bathyscaphe Trieste Close-up of pressure sphere Trieste emblem Trieste was a deep-diving research bathyscaphe (deep boat) with a crew of two. ...
The Bathyscaphe Trieste A bathyscape or bathyscaphe is a self-propelled deep-sea diving submersible, consisting of a crew cabin similar to a bathysphere suspended below a float filled with a buoyant liquid such as petrol. ...
(Bathyscaph: t. 46 (long); 1. 67'; b. 15'; dr. 12'5"; cpl. 2)
Commanded by Lt Comdr. John B Mooney, Jr, Trieste II conducted dives in the vicinity of the loss site of Thresher-operations commenced by the first Trieste the year before. She recovered bits of wreckage, positively fixing the remains as that of the lost Thresher, in September 1964. The second USS Thresher (SSN-593) was the lead ship of her class of nuclear-powered attack submarines in the United States Navy. ...
Subsequently shipped back to San Diego, Trieste II underwent a series of modifications until April 1965, when she was launched on 19 April to undertake the first of many dives as test and training vehicle for the Navy's new deep submergence program. After a series of dives off San Diego, Trieste II underwent further modifications at Mare Island to improve the craft's undersea navigation, control, and small object recovery.
As the bathyscaph continued her operations as test vehicle for the deep submergence program, she qualified four officers as "hydronauts"—the beginning of a burgeoning oceanographic operation. Trieste lI's valuable experience in deep submergence operations has helped in the design and construction of other deepdiving submersibles which could be used in rescuing crews and recovering objects from submarines in distress below levels reachable by conventional methods.
This unique craft was listed only as "equipment" in the Navy inventory until the autumn of 1969. On 1 September 1969, Trieste II was placed in service, with the hull number X-1. Reclassified as a deep submergence vehicle (DSV) on 1 June 1971, Trieste II (DSV-1) continued her active service in the Pacific Fleet into 1980.
The Trieste class DSV were replaced by the Alvin class DSV, as exemplified by the famous Alvin (DSV-2). The Alvins were more capable, more maneuverable, less fragile, but also could not dive as deep, reaching only a maximum of 20,000 feet (for the Sea Cliff (DSV-4)). ALVIN in 1978, a year after first exploring hydrothermal vents. ...
Sea Cliff (DSV-4) is a 16-ton, manned deep-ocean research submersible owned by the United States Navy. ...
External links
- Trieste II
- (ex-TRIESTE II (X 2))
- HISTORY OF THE BATHYSCAPH TRIESTE
- FNRS-2
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