Nagamine Okawa Engineers Inc.

Nagamine Okawa Engineers Inc., a minority-owned, self-certified small disadvantaged business and Asian-Pacific American-owned firm headquartered in Honolulu, Hawaii, provides structural engineering, architectural design, and engineering assessment services as a prime contractor (98% of recent awards) to Department of Defense installations across the Pacific region, predominantly in Hawaii. The firm is a Subchapter S corporation operating under primary NAICS 541512 (Engineering Services) and PSC codes centered on architect-engineer general services.

Nagamine Okawa's customer concentration is heavily skewed toward Navy programs. The top five funding entities account for 79% of awards by count and 95% by combined potential value. Naval Facilities Engineering Command dominates the portfolio with 59 awards valued at $170.6 million combined potential value, while Navy Installations Command places 79 awards valued at $22.5 million. The Army Corps of Engineers Engineering District Honolulu contributes 17 awards ($21.4 million), the Marine Corps 16 awards ($2.4 million), and the Army Installation Management Command Pacific Region 3 awards ($1.3 million). Across these customers, the vendor competes largely on full-and-open basis; recent awards using set-asides (Total Small Business designation) represent roughly 25 percent of the sampled prime work, with the majority awarded without socioeconomic set-aside.

Nagamine Okawa's core capability centers on structural engineering studies, design-bid-build package preparation, seismic and geotechnical assessments, and post-construction award services (PCAS) for military facility repair and modernization. Representative recent prime work includes a $1.68 million delivery order from Navy Installations Command to prepare design-bid-build construction packages for aeration and anoxic tank repairs at Joint Base Pearl Harbor-Hickam (awarded April 2024), a $1.41 million Naval Facilities Engineering Command delivery order for architect-engineer services on Building 230 Hayden Hall renovation at Naval Computer and Telecommunications Area Master Station Pacific in Wahiawa (September 2023), a $2.3 million Naval Facilities Engineering Command delivery order for post-construction award services on Dry Dock No. 4 floor and electrical upgrades (August 2023), and a $724,566 Navy delivery order for repair work at Marine Corps Base Hawaii Kaneohe Bay under task order N6274225F0373 (September 2025). The firm also executes work on specialized projects including multi-year ultrasonic testing of drydock caisson structures, underwater structural inspections, wharf load rating studies, and window and equipment replacement at military installations.

Nagamine Okawa operates under five primary Indefinite Delivery/Indefinite Quantity (IDIQ) vehicles with Naval Facilities Engineering Command and related Navy commands. Indefinite Delivery Contract N6247820D5038 anchors the portfolio with 38 task orders valued at $15.9 million combined potential value; N6247808D5001 carries 38 task orders ($9.8 million); N6247816D5024 carries 36 task orders ($9.3 million); and N6247810D5008 carries 38 task orders ($4.5 million). These single and multiple-award vehicles enable the firm to provide on-demand engineering support across Hawaiian military installations. The vendor also holds a $9.9 million multiple-award IDIQ with the Army Corps of Engineers Engineering District Honolulu and a $30 million single-award IDIQ with Naval Facilities Engineering Command, both supporting broader infrastructure maintenance and design work across the region.

The vendor's activity has remained steady over the past five years — 11 awards in 2022, declining to 6 in 2023, recovering to 7 in 2024, rising to 10 in 2025, and 1 award so far in 2026. Across all 244 prime and sub awards in the source data spanning 1999 to March 2026, combined potential value reaches $229.3 million, with $47.9 million obligated (21% of potential). Seventeen awards with ultimate completion dates in the next twenty-four months carry combined potential value of $7.3 million and therefore face recompete risk in that window. In its subcontractor role, Nagamine Okawa performs engineering services under HDR Engineering, Inc., including wells and storage tank engineering at Helemano Military Reservation on Oahu and amphibious combat vehicle wash rack engineering services at Camp Schwab, Okinawa (awards March 2026 and December 2025 respectively), as well as facility assessments under a Builder SMS AE IDIQ with Marine Corps Base Hawaii (July 2023). The firm has maintained continuous SAM.gov registration since 2001 and competes predominantly full-and-open on its Navy IDIQ vehicles, leveraging established technical qualifications and geographic proximity to Hawaii-based military installations to anchor its federal footprint.