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UnderSea Sensor Systems, Inc..

Ultra Electronics - USSI is located in Columbia City, Indiana, USA. USSI is an industry leader in the design, development, and production of advanced electronics, electro-mechanical, and hydro-acoustic sensor and sensor systems for military, homeland security, and commercial applications. USSI is an innovator of sonar algorithms, surveillance systems, and signal processing solutions. USSI is a proven supplier of cost-effective sonobuoys for Anti-Submarine Warfare (ASW) platforms worldwide.


Since its inception, USSI has grown rapidly to expand its acoustic expertise. With the integration of AudioPack into its manufacturing facility, USSI now produces a variety of amplifiers and attachments for SCBAs and other mission-critical components. USSI also produces the revolutionary HyperSpike line of acoustic hailing devices, which holds the world record for loudest electro-mechanical speaker.


USSI supplies the United States Navy (USN) with sonobuoys through ERAPSCO, Inc. USSI exports USN-Specification sonobuoys worldwide under State Department approval through Sonobuoy TechSystems (STS). STS operates under ERAPSCO, Inc.


USSI is a wholly owned by Ultra Electronics Holdings plc, UK. Ultra is an internationally based group of businesses specializing in Aerospace and Defense. With over 50 years experience in the design and manufacture of innovative and advanced technology products, Ultra is a valued provider of industrial and military equipment.


Making a Difference



USSI Capabilities

  • Underwater Sensor Design, Qualification, Manufacturing, and Support
  • OEM Design and Manufacturing
  • Protective Mask Amplifiers
  • Acoustic Hailing Devices
  • Fuel Cell Technology
  • Two-Way Radio/Mask Communications
  • Short-Range Wireless Squad Radio
  • State of the Art and Legacy Transducer (receiver and projector) Design and Validation
  • Low-power, Cost-effective Sensor Communication Design and Integration (Line of Sight – VHF/UHF) and (Over the Horizon – Satellite)
  • Innovative solutions for Transforming Raw Sensor Data to Low Communication Bandwidth Information
  • Underwater System Design and Test Support
  • Lean manufacturing
  • ISO 9001:2008 / AS 9100:2009 Registered Company
  • ISO IEC 80079-34 Registered Company