Tracking ship

A tracking ship, also called a missile range instrumentation ship or range ship, is a ship equipped with antennas and electronics to support the launching and tracking of missiles and rockets. Since many missile ranges launch over ocean areas for safety reasons, range ships are used to extend the range of shore-based tracking facilities.

In the United States, the initial tracking ships were constructed by the U.S. Army and then the U.S. Air Force to support their missile programs. They were generally built on a surplus Liberty ship or Victory ship hull. By 1964, the U.S. Navy took over all the range ships and introduced more.

In some Navies, such a ship is also given the type designation "Vigilship" or "Veladora", with the Designation Letter "V" or Letters "VC".

Missile range instrumentation ships

People's Liberation Army Aerospace Force

The Chinese ships were purpose built vessels for their role in the navy and the space program.

Yuanwang class Yuanwang 1, 1977 – present Yuanwang 2, 1978 – present Yuanwang 3, 1995 – present Yuanwang 4, 1999 – 2010 Yuanwang 5, 2007 – present Yuanwang 6, 2007 – present Liaowang 1, 2023 – present

French Navy

Inactive Henri Poincaré, 1964–1992 — ex-Italian oil tanker Active Monge, 1992–present

Indian Navy

INS Dhruv, 2021–present INS Anvesh, 2022–present

Pakistan Navy PNS Rizwan, 2023–present

Soviet and Russian Navy

The Soviet and later Russian ships were purpose built vessels for their role. Kosmonaut Vladimir Komarov, 1966–1989 (scrapped) Akademik Sergei Korolev, 1970–1996 (scrapped) Kosmonavt Yuri Gagarin, 1971–1996 (scrapped) , 1978–2001 (museum attraction) , 1978–2006 (scrapped) , 1977–2000 (scrapped) , 1977–2000 (scrapped) , 1967–1989 (scrapped) , 1967–1989 (scrapped) , 1967–1989 (scrapped) , 1967–1989 (scrapped) SSV-33 Ural, 1989–2001 (scrapped) , 1984–2000 (scrapped) , 1990

United States Navy/United States Air Force

There are currently only two active Instrumentation Ships in the U.S. Navy inventory: and . The former is now in the inactive fleet. The latter was delivered in January 2012 to replace USNS Observation Island (T-AGM-23) in 2014. Most of the USN and USAF tracking ships were converted into their role. Some ships were in service with NASA.

Inactive USNS Range Tracker (T-AGM-1), 1961–1969 - built as Victory ship (transport/freighter) USNS Range Recoverer (T-AGM-2), 1960–1972 - built for US Army USNS Longview (T-AGM-3), 1959–1976? - built as Victory ship USNS Richfield (T-AGM-4), 1960–1968 - built as Victory ship USNS Sunnyvale (T-AGM-5), 1960–1974 - built as Victory ship USNS Watertown (T-AGM-6), 1960–1972 - built as Victory ship USNS Huntsville (T-AGM-7), 1960–1974 - built as Victory ship USNS Wheeling (T-AGM-8), 1962–1990 - built as Victory ship USNS General H. H. Arnold (T-AGM-9), 1961–1982 - built as C4 class troop ship USNS General Hoyt S. Vandenberg (T-AGM-10), 1963–1983 - built as C4 class troop ship USNS Twin Falls (T-AGM-11), 1964–1972 - built as Victory ship USNS American Mariner (T-AGM-12), 1959–1966 - built as Liberty ship (transport/freighter), US Coast Guard training ship USNS Sword Knot (T-AGM-13), 1950s–1982 - C1-M cargo ship built for US Maritime Commission USNS Rose Knot (T-AGM-14), 1950s–1969 - C1-M cargo ship USNS Coastal Sentry (T-AGM-15), 1950s–1972 - C1-M cargo ship USNS Coastal Crusader (T-AGM-16), late 1950s–1976 - C1-M cargo ship USNS Timber Hitch (T-AGM-17), 1964–1969 - C1-M cargo ship USNS Sampan Hitch (T-AGM-18), 1964–1973 - C1-M cargo ship USNS Vanguard (T-AGM-19), 1964–1999 - built as Type T2-SE-A2 tanker USNS Redstone (T-AGM-20), 1964–1993 - built as Type T2-SE-A2 tanker USNS Mercury (T‑AGM‑21), 1964–1974? - built as Type T2-SE-A2 tanker USNS Range Sentinel (T-AGM-22), 1969–1974 - USN (Victory ship variation) Sherburne (APA-205) USNS Observation Island (T-AGM-23), 1977–2014 - built as "Mariner" class merchant ship SS Pacific Tracker, a U.S. Maritime Administration Ready Reserve Force tracking ship - built as crane ship.

Active USNS Waters (T-AGS-45), 1991–present USNS Invincible (T-AGM-24), 2000–present - built as ocean surveillance ship USNS Howard O. Lorenzen (T-AGM-25), 2012–present - purpose built to replace Observation Island. s (T-AGS 60–66), 1994–present

Tracking ship

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