Sumiju Yokosuka Kogyo Co., LTD.

Sumiju Yokosuka Kogyo Co., LTD., a foreign-owned Japanese subsidiary of Sumitomo Heavy Industries, LTD., operates as a prime contractor delivering construction, facility maintenance and repair, equipment rental and leasing, and ship support services to U.S. Department of Defense agencies across Japan and the Pacific region, competing on full-and-open basis without set-aside designations. The company is headquartered in Yokosuka, Kanagawa, Japan, and holds primary NAICS codes in specialty trade contracting (118 awards), ship building and repair (82 awards), and commercial/institutional building construction (39 awards); PSC codes center on equipment lease or rental for HVAC and marine systems (33 awards combined).

Sumiju Yokosuka's recent footprint comprises 526 prime awards across 22 customer agencies, with combined potential value reaching $6.68 billion and approximately $313 million obligated as of July 2026. Activity has grown modestly year-over-year through 2023, declining to 14 awards in 2025 and 4 in the first half of 2026; fifteen awards totaling $44.6 million in potential value will reach ultimate completion within the next twenty-four months, representing near-term recompete exposure. The vendor operates exclusively as a prime contractor across all awards captured—no subcontract footprint appears in the source data.

Customer concentration is pronounced and geographically concentrated. The top five funding agencies by award count account for 80 percent of awards: Naval Sea Systems Command (208 awards, $23.7 million potential value) anchors volume through routine small-dollar equipment rentals, while Naval Installations Command (89 awards, $113.4 million) and Naval Facilities Engineering Command (41 awards, $595.2 million) dominate dollars through larger infrastructure and construction delivery orders. Concentration by potential value diverges sharply: Pacific Air Forces commands 37 awards carrying $5 billion in combined potential value (primarily via the Okinawa MACC vehicle), Marine Corps places 40 awards worth $767.3 million, and Army Corps of Engineers Engineering District Japan accounts for 13 awards valued at $153 million. This split reflects the vendor's heavy reliance on construction and major facility repair work at Okinawa and broader Pacific installations.

Sumiju Yokosuka holds four primary vehicle positions. The Kadena Multiple Award Construction Contract (MACC) with Pacific Air Forces, awarded September 2025 and running through September 2028, carries a $995 million ceiling and has generated 60 task orders worth $115.3 million; representative delivery orders include a $6.5 million jet engine maintenance shop repair at Kadena Air Base, a $4.5 million F-15 aircraft support facility repair, and a $2.5 million school transformer replacement project. The Kanto Japan Plains Operation MACC with Naval Facilities Engineering Command (250 million dollars, through June 2028) has produced thirty-one delivery orders worth approximately $24.2 million for design-build and design-bid-build work at Navy facilities; major awards include a $9.3 million caisson dry dock overhaul, $4.1 million caisson outer sill repair, and $4.0 million building repairs at Commander Fleet Activities Yokosuka. Naval Sea Systems Command's indefinite delivery contract N6264909A0005, valued at $3.96 million through September 2026, supports electrical control system upgrades on naval vessels (LC42–LC46) with unit values between $335 thousand and $403 thousand. A single-award Blanket Purchase Agreement for equipment rental (purchase and lease over 60 days, rental under 60 days) with Naval Sea Systems Command, awarded January 2026 and running through January 2031, carries a $5 million ceiling and funds temporary HVAC, dehumidifier, generator, compressor, and transformer support across naval operations.

Named representative work spans three capability bands. Large construction and facility repair orders (seven figures to mid-nine figures) include overhauls and upgrades of dry docks, caisson repairs, seawall rehabilitation, hangar door repairs, building system replacements, and HVAC improvements at Camp Foster and other Okinawa installations under Marine Corps and Air Force MACCs. Mid-range design-build projects (hundreds of thousands to low millions) comprise roof replacements, ductwork and outside plant system installation, concrete pads, restroom facilities, security lighting, transformers, and miscellaneous facility improvements. Routine equipment rental and lease calls (tens of thousands) for temporary air conditioning, dehumidifiers, compressors, transformers, and generators to support naval and shore facility operations represent the largest award count but smallest individual dollar values.

Place of performance is Japan and subordinate military installations across the Kanto Plains (Yokosuka, Sasebo, Commander Fleet Activities), Okinawa Prefecture (Kadena Air Base, Camp Foster, Marine Corps Air Station Futenma, Naha Port), and broader Pacific region. Sumiju Yokosuka has been registered in the System for Award Management since May 9, 2005, and as a foreign-owned entity competes without SBA certifications or set-asides across all federal work.