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Surface Electronic Warfare Improvement Program (SEWIP)

The AN/SLQ-32 Electronic Warfare (EW) system, introduced in the late 1970's, performs the mission of early detection, signal analysis, threat warning and protection from anti-ship missiles. It is an integrated shipboard combat system that provides a full suite of EW capabilities that can be managed and controlled manually from a console or semi-manually/auto by the host combat management system. In 2015, there were 233 systems, in seven variants, deployed worldwide: 129 systems on US Navy ships (CVN, DDG, CG, FFG, LCC, LHA, LHD, LPD and LSD), 13 systems on US Coast Guard cutters, and 91 Foreign Military Sales Transfers in 12 countries. The Surface Electronic Warfare Improvement Program (SEWIP) is an evolutionary development block upgrade program for the AN/SLQ-32(V) EW system offering incremental enhancements in capability. There are currently three established block upgrades and a fourth is planned.
SEWIP Block 1 provides enhanced EW capabilities to existing and new ship combat systems to improve anti-ship missile defense, counter targeting and counter surveillance capabilities. The upgrade addresses obsolescence mitigation through introduction of Electronic Surveillance Enhancements (ESE) and Improved Control and Display (ICAD) as well as incorporation of adjunct receivers for special signal intercept including Specific Emitter ID (SEI) and High Gain/High Sensitivity (HGHS). The SEI and HGHS capability provides improved battlefield situational awareness. The SEWIP Block 1 program is designated as an ACAT II program. Block 1A, Block 1B1, and Block 1B2 are in Full Rate Production. Block 1B3 (HGHS) is in Low Rate Initial Production.

SEWIP Block 2 will provide enhanced Electronic Support (ES) capability by means of an upgraded ES antenna, ES receiver and an open combat system interface for the AN/SLQ-32. These upgrades are necessary in order to pace the threat and improve detection and accuracy capabilities of the AN/SLQ-32. The SEWIP Block 2 program is designated as an ACAT II program. Milestone C was achieved in January 2013 and is in Low Rate Initial Production.

SEWIP Block 3 will provide Electronic Attack (EA) capability improvements required for the AN/SLQ-32(V) system to keep pace with the threat. This block upgrade will provide a common EA capability to all surface combatants outfitted with the active variant of the AN/SLQ-32. SEWIP Block 3 development leverages technology developed under the Office of Naval Research's (ONR) Integrated Topside (InTop) Science and Technology (S&T) effort. The SEWIP Block 3 program is designated as an ACAT II program and is currently in the Engineering and Manufacturing Development Phase.

SEWIP Block 4 is a future planned upgrade that will provide advanced electro-optic and infrared capabilities to the AN/SLQ-32(V) system.
SEWIP was established as an ACAT II program in July 2002 after cancellation of Advanced Integrated Electronic Warfare System (AIEWS). Through incremental upgrades using an evolutionary acquisition strategy, the AN/SLQ-32(V) is being modernized to mitigate obsolescence and delivery advanced ES and EA capability to the Fleet.
Point Of Contact
Office of Corporate Communication (SEA 00D)
Naval Sea Systems Command

Washington, D.C. 20376
Last Update: 12 January 2016