Japan Marine United Corporation

Japan Marine United Corporation, a subsidiary of Japan-based Ishikawajima-Harima Heavy Industries Co., Ltd., provides ship repair, maintenance, and overhaul services to the U.S. Navy and Army as a prime contractor (80% of awards) and subcontractor, competing under full-and-open procurement with no set-aside designations. The company is an international for-profit organization headquartered in Yokohama, Japan, operating in NAICS 327806 (Ship Building and Repairing) and PSC H408 (Non-Nuclear Ship Repair—West), with all work performed at its Japan-based facilities.

Japan Marine United dominates the Navy and Army watercraft repair market. Its customer concentration is extreme: the Department of the Army's TACOM Life Cycle Management Command accounts for 8 awards carrying $499.6 million in combined potential value (91% of the company's entire $547.3 million portfolio), while the Department of the Navy's Naval Sea Systems Command and Military Sealift Command together represent 30 awards with $34.7 million. This concentration reflects two large IDIQs awarded in January 2026 by TACOM for Army Watercraft Sustainment Maintenance (AWSM) Program work across two overseas zones: a $211 million IDIQ for OCONUS Zone 2 (through July 2031) and a $69.8 million IDIQ for Zone 3 Pier Side (through July 2031), each with a ceiling-value structure but minimal task order activity to date. Beyond the TACOM IDIQs, Japan Marine United holds three Navy BOAs and several naval delivery orders for specific vessel work: a $2.1 million November 2025 delivery order for USS FITZGERALD (DDG 62) ship repair under NAVSEA, a $7.8 million December 2021 delivery order for APL-40 dry dock overhaul under NAVSEA, and an $8.8 million November 2021 delivery order for USNS BRUNSWICK mid-term availability under Military Sealift Command.

Activity patterns show volatility tied to large contract events: two awards in 2020, nine in 2021, three in 2022, then eleven in 2025 and four in early 2026, driven by the January 2026 TACOM IDIQ awards. Only $69.4 million of the $547.3 million portfolio has been obligated (13%), signaling that the bulk of potential value sits in IDIQ ceiling space awaiting task orders. Japan Marine United subcontracts to Crowley Government Services under vessel operations and maintenance contracts, supplying parts, valve fabrication, motor coils overhaul, and grey water modification services on Navy and Military Sealift Command vessels (ten sub awards in 2025 alone). The company's capability set is narrowly specialized in overseas ship repair and watercraft sustainment, with no domestic construction work, no production contracts, and no growth beyond Navy and Army maritime customer sets.