Please report any broken links or trouble you might come across to the Webmaster. Please take a moment to let us know so that we can correct any problems and make your visit as enjoyable and as informative as possible.

NavSource Online: Submarine Photo Archive

Trieste I

Bathyscaph. L/B/D: Des: Auguste Piccard. Built: Navelmeccanica, Naples, Italy; 1953. Commissioned Trieste; Final Dispostion: Retired after the commissioning of Trieste II. Trieste was put on exhibit at the Washington Navy Yard in 1980.

Specifications: Displacement, Submerged: 50 tons without gasoline; 150 tons with gasoline; Length 59.5'; Beam 11' 6"; Practical Depth, 11,000 meters; Viability: 24 hours; Batteries; 60kWh; Propulsion; 2x2 hp; Speed; 1 kt.
Operating Crew: One crew member and one scientist;
Buoyancy Control: Water buoyancy control; compressed air for positive buoyancy, sea water for negative buoyancy. Gasoline could be pumped out to speed descent.

Size	Image Description	Source
56k	U.S. Navy Bathyscaphe *Trieste 1*, is hoisted out of the water in a tropical port, circa 1958-59, soon after her purchase by the Navy. Photograph was released by the U.S. Navy Electronics Laboratory, San Diego, California.	USNHC # NH 96801. U.S. Naval Historical Center Photograph.
71k	U.S. Navy Bathyscaphe *Trieste 1* under tow, en route to a deep water dive in the Pacific, 15 September 1959. She is flying both the United States and Swiss flags.	USNHC # NH 96798. U.S. Naval Historical Center Photograph.
71k	U.S. Navy Bathyscaphe *Trieste 1, close up view of the front of Trieste's* pressure sphere, showing plexiglass window and instrument leads. The forward ballast silo, with metering valve on its bottom, is in the upper left. Photo was taken circa 1958-59, shortly after *Trieste* was obtained by the Navy. It was released by the U.S. Navy Electronics Laboratory, San Diego, California.	USNHC # NH 96805. U.S. Naval Historical Center Photograph.
62k	U.S. Navy Bathyscaphe *Trieste 1, a late 1950's artwork, depicting Trieste* operating on the deep ocean floor.	USNHC # NH 96806. U.S. Naval Historical Center Photograph.
77k	U.S. Navy Bathyscaphe *Trieste 1, is hoisted from the water by a floating crane, during testing by the Naval Electronics Laboratory in the San Diego, California, area. Trieste* was being prepared for transportation to the Marianas Islands for a three-month series of deep-submergence operations. On 2 October 1959, she was loaded on the frieghter *Santa Maria* for the trip to the mid-Pacific.	USNHC # NH 96799. U.S. Naval Historical Center Photograph.
107k	U.S. Navy Bathyscaphe *Trieste 1, Jacques Piccard (right), co-designer of the bathyscaphe, and Ernest Virgil loading iron shot ballast into Trieste*, prior to her record 18,600 foot descent in in the Marianas Trench, off Guam. The dive was made on 15 November 1959. Photo was released for publication on 28 November 1959.	USNHC # NH 96804. U.S. Naval Historical Center Photograph.
102k	U.S. Navy Bathyscaphe *Trieste 1, Jacques Piccard, co-designer of the bathyscaphe, and his assistants make final checks aboard her, prior to Trieste's* first deep dive in the Marianas Trench. On 15 November 1959, off Guam, she dove to 18,600 feet, breaking the previous record of 13,000 feet. Wandank (ATA-204) is in the distance, apparently towing the bathyscaphe. Navigation bouy on right indicates that the photo may have been taken as *Trieste* left port to make the dive. Photo was released from publication on 28 November 1959.	USNHC # NH 96802. U.S. Naval Historical Center Photograph.
30k	U.S. Navy Bathyscaphe *Trieste 1* being offloaded into the water, circa 1960.	USN photo courtesy of onr.navy.mil & Miriam Hyman.
78k	U.S. Navy Bathyscaphe *Trieste 1, just before her record dive to the bottom of the Marianas Trench, 23 January 1960. The dive, to a depth of 35,800 feet in the Challenger Deep, off Guam, was made with Lieutenant Don Walsh, USN, and Swiss scientist Jacques Piccard on board. Waves were about five to six feet high when the two men boarded Trieste* from the rubber raft seen at left. Lewis (DE-535) is steaming by in the background.	USNHC # NH 96797. U.S. Naval Historical Center Photograph.
22k	In 1960, Swiss scientist Jacques Piccard (above in this photo) and Navy lieutenant Donald Walsh made history when they descended in the U.S. Navy Bathyscaphe *Trieste 1*, to the bottom of the Mariana Trench. The brave divers were housed in a sphere attached to the bottom of the bathyscaphe's long buoyant tank.	Photo & text courtesy of University of Delaware. (ocean.udel.edu)
77k	Spray drenched and bone tired, Jacques Picard and Lt. Don Walsh pull away from U.S. Navy Bathyscaphe *Trieste 1* after their dive to a corrected depth of 35,800 feet.	Photo by Thomas J. Abercromie from the book Great Adventures with National Geographic, 1963. Page 330.
58k	U.S. Navy Bathyscaphe *Trieste 1, General arrangement drawing, showing the bathyscaphe's main features. Drawing was released in connection with Trieste's* record dive to 35,800 feet in the Challenger Deep, off Guam, on 23 January 1960.	USNHC # NH 96807. U.S. Naval Historical Center Photograph.
54k	U.S. Navy Bathyscaphe *Trieste 1, being loaded aboard Point Defiance* (LSD-31) by a floating crane. Photographed about 15 April 1963, when the landing ship departed San Diego, California, to transport *Trieste* to New London, Connecticut, to take part in investigating the loss of Thresher (SSN-593). Photograph was released for publication on 18 April 1963.	USNHC # NH 96800. U.S. Naval Historical Center Photograph.
101k	U.S. Navy Bathyscaphe *Trieste 1* in Boston enroute to the Thresher (SSN-593).	UPI photo courtesy of the Springfield Mass. Morning Union newspaper, 18 April 1963. Submitted by Stan Svec.
88k	U.S. Navy Bathyscaphe *Trieste 1* arrives after an 11-day trip in the well deck of the Point Defiance (LSD-31) from San Diego, CA.	AP wirephoto courtesy of the Springfield Mass. Morning Union newspaper, 29 April 1963. Submitted by Stan Svec.
212k	U.S. Navy Bathyscaphe *Trieste 1*.	UPI photo courtesy of the Springfield Mass. Morning Union newspaper, 18 April 1963. Submitted by Stan Svec.
84k	Water pours from the deck of the U.S. Navy Bathyscaphe *Trieste 1* as it emerges after a 36 foot test dive in Boston harbor. The dive was to check trim, lights, sonar and telephones.	UPI photo courtesy of the Springfield Mass. Morning Union newspaper, 18 April 1963. Submitted by Stan Svec.
93k	U.S. Navy Bathyscaphe *Trieste 1, operating at dockside at the Boston Naval Shipyard, Charlestown, Massachusetts, with a diver and crew assisting, 12 June 1963. Barge YC-764* is at right, and Billfish (SS-286) is in the center distance. Photographed by Belcher, Mobile Photo Group. View was probably taken during tests supporting the investigation into the loss of Thresher (SSN-593).	USNHC # NH 96803. U.S. Naval Historical Center Photograph.
74k	Commemorative post mark on the ocassion of U.S. Navy Bathyscaphe *Trieste 1* fourth dive on 29 June 1963, while in search of the Thresher (SSN-593) in 1600 fanthoms of water.	Photo courtesy of Jim Richardson.
117k	U.S. Navy Bathyscaphe *Trieste 1* wallowing on the surface, awaiting a support ship. Note the small propellers for underwater manoeuvring. The kite-like affair is a radar reflector to help support ships locate the low-lying craft.	US Navy photo courtesy of The American Submarine, by Norman Polmar & submitted by Robert Hurst. Photo added 04/23/08.
48k	Outboard profile drawing of U.S. Navy Bathyscaphe Trieste 1's configuration in about 1963, prepared for the Navy Museum, Washington, DC., during the early 1980s. *Trieste* was placed on exhibit in the Navy Museum in 1980.	USNHC # NH 95258. U.S. Naval Historical Center Photograph.
37k	*Trieste* on exhibit in the Navy Museum.	U.S.Navy Photograph.