NOAAS Mount Mitchell

Mount Mitchell was built for the U.S. Coast and Geodetic Survey as a "medium survey ship" (MSS) at the Aerojet-General Shipyards in Jacksonville, Florida. Launched on 29 November 1966, she was commissioned into the Coast and Geodetic Survey in March 1968 as USC&GS Mount Mitchell (MSS 22).^[2] When the Survey merged with other organizations to form NOAA in 1970, she became part of the NOAA fleet as NOAAS Mount Mitchell (S 222). She is the sister ship of NOAAS Fairweather (S 220) and NOAAS Rainier (S 221), which are both still in service with NOAA.

Mount Mitchell operated as a multipurpose vessel. She had an oceanographic laboratory, several echosounders, and an oceanographic winch. She also had a hydroplot data-processing system, as did two of her survey launches.

Mount Mitchell conducted hydrographic surveys on the United States East Coast and in the Caribbean, and served as an oceanographic vessel throughout much of the North Atlantic Ocean on various projects. In the late 1980s she was fitted with a multi-beam sounding system for hydrographic work related to establishing the maritime exclusive economic zone of the United States and discovered Mitchell Dome among other large, economically significant undersea features in the Gulf of Mexico. In 1992 she proceeded to the Persian Gulf to study the effects of the 1990–1991 Persian Gulf War oil spills into the Gulf. After returning to the United States, she resumed operations as a hydrographic survey vessel until decommissioning in 1995.

After six years of inactivity, the decommissioned Mount Mitchell was purchased in 2001 by Mt. Mitchell LLC and was completely refurbished and retrofitted with the latest in electronics, machinery, and safety equipment. With her refit complete, she arrived in Seattle, Washington, in 2003 to begin her career as the private research ship R/V Mt. Mitchell. She is managed and operated by Global Seas LLC, headquartered in Seattle.

In 2006, the vessel was chartered by the Waitt Historical Foundation along with the undersea search firm Nauticos to conduct a three month subsea search for the wreck of Amelia Earhart's Lockheed Electra airplane on the seafloor west and northwest of Howland Island which yielded no results.

In 2008, Mt. Mitchell was outfitted with the most advanced underwater mapping equipment available. Her Kongsberg EM 120 and EM 710 high-resolution multibeam mapping systems offer a state-of-the-art capability to perform seabed mapping to full ocean depth with unrivaled resolution, coverage, and accuracy. The EM 120 system allows for accurate surveys to a depth of 11,000 meters (36,089 feet), while the EM 710 allows for accurate mapping to a depth of 2,000 meters (6,562 feet). The vessel is an acoustically quiet platform capable of supporting sophisticated sonar operations in deep water and high sea states. To ensure ship-related noise does not degrade the vessel′s capability to perform her science mission at full performance, the sonar systems are installed in a gondola arrangement below her hull. In addition, custom-designed propellers were installed in early 2011 to improve her efficiency.

After a reasonable level of activity in the first ten years as a commercial survey vessel, the ship spent virtually all time afterwards moored at Ballard in the Lake Washington Ship Canal until ultimately being sold by her owners to the Uruguayan Navy who operates her today in 2026 conduction the same employment.

On October 20, 2023, it was reported that the Minister of National Defense of Uruguay, Javier García, confirmed that the purchase of Mt. Mitchell for the Uruguayan Navy was ratified. The ship will serve as the new oceanographic and research vessel of the Uruguayan Navy since the retirement of Uruguayan survey ship ROU 22 Oyarvide.^[4]