The Department of Defense, through the Naval Surface Warfare Center, is soliciting proposals for support related to Unmanned Maritime Systems (UMS) under the Seaport NxG Multiple Award Contract (MAC). This opportunity is specifically set aside for Service-Disabled Veteran-Owned Small Businesses (SDVOSBC) and requires that only holders of the Seaport MAC are eligible to submit proposals. The UMS support services are critical for enhancing naval operations and capabilities, reflecting the increasing reliance on unmanned systems in maritime environments. Interested parties must submit their responses via the PIEE Solicitation Module by January 16, 2026, at 4 PM CST, and can reach out to Melissa Ryan at melissa.m.ryan12.civ@us.navy.mil or Matthew Hammond at matthew.a.hammond4.civ@us.navy.mil for further inquiries.

\*\*\*ONLY SEAPORT MAC HOLDERS are eligible for award under this solicitation.\*\*\* Request for Proposal (RFP) under the Seaport NxG Multiple Award Contract (MAC), number N6133126R3102 for the Unmanned Maritime Systems (UMS). This RFP will also be posted within the Seaport NxG Opportunities Page. This effort has been previously been posted within the Seaport NxG portal under the Opportunities page as the following: Source Sought Notice N61331-25-SN-Q31, dated 6/13/2025 and the follow-up Advance Planning Notice/Pre-Solicitation Notice dated 8/20/2025. Previous references this potential solicitation as number N6133125R3009. Responses must be submitted via the PIEE solicitation module. 

Service-Disabled Veteran-Owned Small Business Set Aside

Unmanned Maritime Systems (UMS) Support

\*\*\*ONLY SEAPORT MAC HOLDERS are eligible for award under this solicitation.\*\*\* Request for Proposal (RFP) under the Seaport NxG Multiple Award Contract (MAC), number N6133126R3102 for the Unmanned Maritime Systems (UMS). This RFP will also be posted within the Seaport NxG Opportunities Page. This effort has been previously been posted within the Seaport NxG portal under the Opportunities page as the following: Source Sought Notice N61331-25-SN-Q31, dated 6/13/2025 and the follow-up Advance Planning Notice/Pre-Solicitation Notice dated 8/20/2025. Previous references this potential solicitation as number N6133125R3009. \*\*\*RESPONSES MUST BE SUBMITTED VIA THE PIEE SOLICIATION MODULE.\*\*\* \*\*\*UPDATE 12/8: This announcement was posted in the Seaport opportunities page, PLEASE UTILIZE THE DOCUMENTS FOUND WITHIN THE SEAPORT ANNOUCEMENT, Opportunity - Unmanned Maritime Systems RFP N6133126R3102. Opportunity Type: Other.\*\*\*

\*\*\*ONLY SEAPORT MAC HOLDERS are eligible for award under this solicitation.\*\*\* Request for Proposal (RFP) under the Seaport NxG Multiple Award Contract (MAC), number N6133126R3102 for the Unmanned Maritime Systems (UMS). This RFP will also be posted within the Seaport NxG Opportunities Page. This effort has been previously been posted within the Seaport NxG portal under the Opportunities page as the following: Source Sought Notice N61331-25-SN-Q31, dated 6/13/2025 and the follow-up Advance Planning Notice/Pre-Solicitation Notice dated 8/20/2025. Previous references this potential solicitation as number N6133125R3009. \*\*\* RESPONSES MUST BE SUBMITTED VIA THE PIEE SOLICITATION MODULE.\*\*\* \*\*\*UPDATE 12/8 This announcement was posted in the Seaport opportunities page, PLEASE UTILIZE THE DOCUMENTS FOUND WITHIN THE SEAPORT ANNOUCEMENT, Opportunity - Unmanned Maritime Systems RFP N6133126R3102. Opportunity Type: Other.\*\*\* UPDATE 12/10 Response time updated to 01/05/2025 4 PM CST to match the RFP. 

\*\*\*ONLY SEAPORT MAC HOLDERS are eligible for award under this solicitation.\*\*\* Request for Proposal (RFP) under the Seaport NxG Multiple Award Contract (MAC), number N6133126R3102 for the Unmanned Maritime Systems (UMS). This RFP will also be posted within the Seaport NxG Opportunities Page. This effort has been previously been posted within the Seaport NxG portal under the Opportunities page as the following: Source Sought Notice N61331-25-SN-Q31, dated 6/13/2025 and the follow-up Advance Planning Notice/Pre-Solicitation Notice dated 8/20/2025. Previous references this potential solicitation as number N6133125R3009. \*\*\* RESPONSES MUST BE SUBMITTED VIA THE PIEE SOLICITATION MODULE.\*\*\* \*\*\*UPDATE 12/8 This announcement was posted in the Seaport opportunities page, PLEASE UTILIZE THE DOCUMENTS FOUND WITHIN THE SEAPORT ANNOUCEMENT, Opportunity - Unmanned Maritime Systems RFP N6133126R3102. Opportunity Type: Other.\*\*\* UPDATE 12/19 Response time updated to 01/16/2026 4 PM CST \*\*\*\*. 

\*\*\*ONLY SEAPORT MAC HOLDERS are eligible for award under this solicitation.\*\*\* Request for Proposal (RFP) under the Seaport NxG Multiple Award Contract (MAC), number N6133126R3102 for the Unmanned Maritime Systems (UMS). This RFP will also be posted within the Seaport NxG Opportunities Page. This effort has been previously been posted within the Seaport NxG portal under the Opportunities page as the following: Source Sought Notice N61331-25-SN-Q31, dated 6/13/2025 and the follow-up Advance Planning Notice/Pre-Solicitation Notice dated 8/20/2025. Previous references this potential solicitation as number N6133125R3009. \*\*\* RESPONSES MUST BE SUBMITTED VIA THE PIEE SOLICITATION MODULE.\*\*\* \*\*\*UPDATE 12/8 This announcement was posted in the Seaport opportunities page, PLEASE UTILIZE THE DOCUMENTS FOUND WITHIN THE SEAPORT ANNOUCEMENT, Opportunity - Unmanned Maritime Systems RFP N6133126R3102. Opportunity Type: Other.\*\*\* UPDATE 12/19 Response time updated to 01/16/2026 4 PM CST \*\*\*\*.Please refer to the Amendment Log found within the Seaport announcement for updates to the RFP. 

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