SUBMARINE C4ISR SYSTEMS TECH SUPPORT, INSTALLATION AND MODERNIZATION

Open — responses due 11 Dec 2026 (27 days left) · Unrestricted (full and open) · Department of the Navy, DoD · NAICS 541330 · Solicitation N65236-26-RFPREQ-LSUBP00035-0009

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Solicitation details

Solicitation number	N65236-26-RFPREQ-LSUBP00035-0009
Notice ID	e3aee8e5ef024ab4bdbcf197cf7dce78
Agency	Department of Defense (DoD)
Sub-agency	Department of the Navy
Contracting office	NIWC ATLANTIC
NAICS code	541330 — Engineering Services
Product / service code (PSC)	L059
Set-aside	Unrestricted (full and open)
Notice type	Sources Sought
Posted	12 November 2026
Response deadline	11 December 2026
Competition	Competitive

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Description

Market Survey (MS) for Services Procurements -- Large Businesses Need not to apply***This opportunity is for SEAPORT NXG MAC HOLDERS ONLY and no other offers will be considered. SeaPort MAC holders will need to register for PIEE accounts in order to receive solicitations and submit proposals/offers. This Market Survey is issued for the purpose of assessing Small Business capabilities. See accompanying Draft PWS and attachment for more information The Naval Information Warfare Center (NAVWAR) Naval Information Warfare Center (NIWC) Atlantic (NIWC-Atlantic) is issuing this Market Survey for determining Small Business capabilities and is soliciting information from potential sources to provide provide core systems focus on the Common Submarine Radio Room (CSRR) and related gear (radios, networks, antennas, crypto, CANES, ADNS, TFDS, Link-16, etc.), plus future C4ISR/C5ISR/C6ISR capabilities. Support will occur (potentially) world-wide in all U.S. Navy Submarines, all U.S. territories, Guam, Diego Garcia, Souda Bay Greece, Japan, South Korea, Germany, Australia, Italy, and Scotland.

Version history

SAM.gov has posted 2 notices under solicitation N65236-26-RFPREQ-LSUBP00035-0009, oldest first.

12 November 2026 — Sources Sought (this page)
12 November 2026 — Sources Sought (latest)

Documents in the solicitation package

4 files are attached to this notice.

PIEE Solicitation Module Link for N65236-26-RFPREQ-LSUBP00035-0009
Web Based Training for the PIEE Solicitation Module
Registration Instructions for the PIEE Solicitation Module
Department of Defense Procurement Toolbox

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Market context: DoD and NAICS 541330

About the buyer and the industry, not this specific solicitation. Source: USASpending.gov award data, updated nightly.

In fiscal year 2026, DoD obligated $8.7B across 3,569 contract actions under NAICS 541330.
4,472 contracts worth $46.9B in this category end within the next 18 months.

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Source: this notice on SAM.gov. FedSift republishes public federal procurement data and is not affiliated with the U.S. Government. Always confirm dates and requirements against SAM.gov before responding.