SINKEX

SINKEX
Name	SINKEX
Type	Live-fire sinking exercise
Participants	United States Navy, Royal Navy, Royal Australian Navy, Indian Navy, French Navy
Location	Pacific Ocean, Atlantic Ocean, Indian Ocean, Mediterranean Sea
First	20th century
Status	Active

SINKEX Sinkex are live-fire naval exercises in which decommissioned naval vessels are used as targets to practice naval gunnery, anti-ship missile engagements, and combined-arms tactics. They enable states such as the United States Navy, Royal Navy, Royal Australian Navy, Indian Navy, and French Navy to validate weapons systems like the Harpoon (missile), Tomahawk (missile), Exocet and platforms such as Arleigh Burke-class destroyer, Type 45 destroyer, Koa-class corvette under realistic conditions while integrating assets including F/A-18 Hornet, F-35 Lightning II, P-8 Poseidon, MH-60R Seahawk, and E-2 Hawkeye. Naval exercises involving retired ships also intersect with international law instruments such as the London Convention and organizations like the International Maritime Organization.

Overview

Sinkex provide practical experience for crews of aircraft carrier strike groups, amphibious assault ship battlegroups, and multinational task forces including Combined Task Force 151 and Standing NATO Maritime Group 2. Typical objectives include live-fire verification of shipboard sensors such as the Aegis Combat System, testing of missile interceptors like the Standard Missile 6, and coordination with shore-based assets such as the Long Range Discrimination Radar or THAAD. Exercises often occur in designated training ranges like the Pacific Missile Range Facility, Atlantic Undersea Test and Evaluation Center, and areas proximate to Hawaii or San Diego to leverage range safety support from agencies including the National Oceanic and Atmospheric Administration.

History and Development

The practice evolved from 20th-century gunnery trials conducted by fleets including the Royal Navy and Imperial Japanese Navy during interwar and World War II periods, and expanded during the Cold War with involvement from the United States Navy and Soviet Navy. High-profile events tied to weapons introduction involved platforms like the USS Iowa (BB-61), USS Missouri (BB-63), and later USS Forrestal (CV-59)-era carrier aviation test programs. Post-Cold War structural changes in navies such as the Royal Australian Navy and procurement of stand-off weapons like the AGM-158 JASSM and evolution of electronic warfare suites from manufacturers tied to BAE Systems and Raytheon Technologies influenced sinkex scope. Environmental awareness and treaty diplomacy with actors including the European Union and Greenpeace further shaped policy.

Procedures and Protocols

Authorization often requires coordination among defense ministries such as the United States Department of Defense, regulatory agencies like the Environmental Protection Agency, and regional naval commands including U.S. Pacific Fleet and NATO Allied Maritime Command. Decommissioned vessels undergo demilitarization and cleaning protocols referencing guidelines from the International Maritime Organization and country-specific statutes, with oversight by bodies like the Department of the Navy and the Ministry of Defence (United Kingdom). Safety and range protocols integrate assets such as Rescue Coordination Centres, Coast Guard units like the United States Coast Guard, and air traffic control authorities including Federal Aviation Administration to establish exclusion zones and coordinate salvage plans.

Environmental and Legal Concerns

Environmental scrutiny involves parties such as Greenpeace, Natural Resources Defense Council, and agencies like the Environmental Protection Agency and Environment Agency (England), focusing on pollutants including asbestos, polychlorinated biphenyls, and fuel residues regulated under the London Protocol. Litigation and policy review may invoke national courts, the European Court of Justice, or legislative bodies such as the United States Congress and Parliament of the United Kingdom. Alternatives promoted by organizations including the National Oceanic and Atmospheric Administration and research institutions like Scripps Institution of Oceanography include artificial reef programs exemplified by collaborations with Texas A&M University and monitoring by the National Marine Fisheries Service.

Military and Tactical Uses

Sinkex serve to validate doctrines such as sea control, power projection, and anti-access/area denial countermeasures used in theaters involving Strait of Hormuz, South China Sea, and Baltic Sea scenarios. Exercises rehearse multi-domain integration with platforms like Zumwalt-class destroyer, Virginia-class submarine, Los Angeles-class submarine, B-52 Stratofortress, and naval aviation from carriers such as USS Gerald R. Ford (CVN-78). They provide data for materiel programs managed by agencies including the Defense Advanced Research Projects Agency and procurement offices like the Naval Sea Systems Command to refine lethality of munitions including AGM-158C LRASM and countermeasures against threats exemplified by systems fielded by People's Liberation Army Navy or Russian Navy surface combatants.

Notable Sinkex Events and Examples

Notable sinkex have included multinational exercises such as RIMPAC involving dozens of nations and platforms from Japan Maritime Self-Defense Force and Royal Canadian Navy; high-visibility U.S. tests using former hulls like USS America (LHA-6)-adjacent trials; and events tied to weapons demonstrations for systems like the SLAM-ER and Harpoon (missile). Specific incidents that spurred policy debate involved engagements near Guam and controversies addressed by entities such as Congressional Research Service briefings and nonprofit analyses from Center for Strategic and International Studies and Chatham House. International cooperative sinkex operations appeared in exercises with French Navy carrier groups and NATO maneuvers including Operation Atlantic Resolve.

Category:Naval exercises