Sigma, K.K.

Sigma, K.K., a for-profit Japanese corporation headquartered in Nagasaki, Japan, provides shipboard maintenance, repair, and fiber optic system services to the U.S. Navy as a prime contractor under full-and-open (non-set-aside) delivery orders placed against single-award Basic Ordering Agreements. The company operates exclusively as a prime, with no subcontract footprint, and serves a single federal customer across three related Navy organizations.

Sigma's capability portfolio centers on insulation replacement, lagging repair, and fiber optic cable and connector maintenance for amphibious transport dock and dock landing ship classes forward-deployed to the 7th Fleet area of operations in the Pacific. Representative recent work includes a $22,567 firm fixed-price delivery order from Naval Sea Systems Command in January 2026 for shipboard maintenance on an LPD-class vessel; a $11,254 May 2025 delivery order for insulation replacement on the USS San Antonio (LPD-18); and a $5,970 August 2025 delivery order for fiber optic cable circuit services on the same vessel. Work is performed in Japan and supports vessels operating in the Western Pacific theater.

Customer concentration is complete within the Department of the Navy. Naval Sea Systems Command dominates the potential-value ranking with 40 awards worth $339 thousand, while United States Pacific Fleet Forces accounts for 48 awards worth $203 thousand. Naval Supply Systems Command holds the remaining two awards. The distinction reflects Naval Sea Systems Command's role as the contracting authority issuing delivery orders against Sigma's BOAs, while Pacific Fleet Forces represents the operational customer base for those orders.

Sigma holds a position on four Navy BOAs that structure its work. The Indefinite Delivery Contract N6824609G0012 carries 53 task orders worth $229 thousand in combined potential value; the Basic Ordering Agreement N6264922G0005 (the primary frame for recent activity, running through September 30, 2027) carries 14 task orders worth $140 thousand; the Basic Ordering Agreement N6824618G0012 carries 13 task orders worth $115 thousand; and the Basic Ordering Agreement N6824614G0012 carries 6 task orders worth $58 thousand. All work falls under NAICS 336611 (Ship Building and Repairing) and PSC non-nuclear ship repair.

Sigma has maintained consistent annual activity over the past five years — ranging from one to five awards per year — with minimal recompete exposure (one award with $23 thousand combined potential value reaching completion within the next twenty-four months). The vendor has held a SAM.gov registration since August 2005 and operates as a single-award regional service provider in the 7th Fleet maintenance network rather than a multi-customer defense prime.