# Ocean Explorer (OEX) Large Underwater Vehicle Demonstrator

Canonical: https://abierto.us/opportunities/n0001425sbc04

- Solicitation number: N0001425SBC04
- Notice type: Solicitation
- Status: Closed. Deadline was January 30, 2026 at 4:30 PM EST
- Department: Department of the Navy
- Agency: Department of the Navy
- Contracting office: Office of Naval Research (N00014)
- NAICS: 541715 Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- Product or service code: AC13 National Defense R&D Services; Department Of Defense - Military; Experimental Development
- Place of performance: Arlington, Virginia
- County: Arlington County (FIPS 51013). https://abierto.us/counties/arlington-county-va-51013
- City: Arlington. https://abierto.us/cities/arlington-va-5103000
- First posted: May 29, 2025
- Last posted: January 30, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/1f5bad1f60a14dfab8f61ef200d2dac0/view

## Description

Amendment 006 - Posted 30 January 2026 (Please see updated attachments)

Amendment 005 - Posted 22 December 2025 (Please see updated attachments)

Amendment 004 - Posted 26 September 2025 (Please see updated attachment)

Amendment 003 - Posted 20 Aug 2025 (Please see updated attachment)

Amendment 002 - Posted 24 Jul 2025 (Please see updated attachments)

Amendment 001 - Posted 24 Jun 2025 (Please see updated attachments) The Office of Naval Research (ONR) seeks potential performers who are interested in pursuing the rapid design, build, and testing of OEX, an ultra-large autonomous undersea vehicle capable of conducting extended ocean scale missions while carrying a large modular payload. Innovation is sought both in terms of ultra-large undersea vehicle technology and in rapid prototype design and fabrication.

The BAA Call initially seeks white papers followed by a full costed proposal covering an OEX “Preliminary Design” phase (Phase 1A) with a “Detailed Design” option (Phase 1B). The purpose of the OEX Preliminary Design is to establish the technical feasibility of the vehicle (with a payload module) and to lay out the operational and maintenance infrastructure required to support a hypothetical OEX “squadron”.

## Publications

- May 29, 2025: Solicitation, due October 31, 2025 at 4:30 PM EDT. Notice 049d222acdd74ec2a938ac092a16a7d0. https://sam.gov/workspace/contract/opp/049d222acdd74ec2a938ac092a16a7d0/view
- June 24, 2025: Solicitation, due October 31, 2025 at 4:30 PM EDT. Notice 97712972131b489e9e99f7a8edfa7184. https://sam.gov/workspace/contract/opp/97712972131b489e9e99f7a8edfa7184/view
- July 24, 2025: Solicitation, due October 31, 2025 at 4:30 PM EDT. Notice c8d9872ce956436ca93ffa7b2e5ef50c. https://sam.gov/workspace/contract/opp/c8d9872ce956436ca93ffa7b2e5ef50c/view
- August 20, 2025: Solicitation, due December 1, 2025 at 4:30 PM EST. Notice a5dfc2e18a1a406eb837defc8f2d2530. https://sam.gov/workspace/contract/opp/a5dfc2e18a1a406eb837defc8f2d2530/view
- September 26, 2025: Solicitation, due January 2, 2026 at 4:30 PM EST. Notice 2ae15fdc2ece480890956cabfea55ec1. https://sam.gov/workspace/contract/opp/2ae15fdc2ece480890956cabfea55ec1/view
- December 22, 2025: Solicitation, due January 30, 2026 at 4:30 PM EST. Notice b467e5f0ac394885a58b485f0302c4f3. https://sam.gov/workspace/contract/opp/b467e5f0ac394885a58b485f0302c4f3/view
- January 30, 2026: Solicitation, due January 30, 2026 at 4:30 PM EST. Notice 1f5bad1f60a14dfab8f61ef200d2dac0. https://sam.gov/workspace/contract/opp/1f5bad1f60a14dfab8f61ef200d2dac0/view

## Points of contact

- Hemenway, Leila, leila.k.hemenway.civ@us.navy.mil, 7036960694

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/n0001425sbc04.