Underwater Mechanix Services LLC

Underwater Mechanix Services LLC Marine Construction Division, a self-certified small disadvantaged business based in Jacksonville, Florida, performs underwater emergency response, marine construction, dredging, and pier repair services to federal agencies as a prime contractor on 26 awards (84% of the vendor's recent footprint) and as a subcontractor on 5 subawards. The vendor competes predominantly under total small business set-asides for individual task orders and purchases, though it holds a $24 million multiple-award indefinite delivery contract with the Army Corps of Engineers Nashville District (awarded March 1, 2023, running through March 5, 2028) that permits both set-aside and unrestricted competition on delivery orders.

Customer concentration is split between maritime agencies and infrastructure authorities. The Coast Guard leads by award count with 13 awards totaling $6.1 million in combined potential value, while the Army Corps of Engineers (across multiple districts) anchors the dollar value with $40.1 million combined potential value across six awards — the largest being a $9.4 million dredging contract for Big Fishweir Creek and Little Fishweir Creek in Duval County, Florida (awarded September 25, 2022, completed August 16, 2023), a $5.79 million definitive contract for Thatcher Lock and Dam construction at Calion, Arkansas (awarded September 10, 2025, scheduled completion December 31, 2026), and the $24 million Nashville District MATOC. The portfolio also includes work with the National Oceanic and Atmospheric Administration, the Department of the Navy Installations Command, and other smaller federal customers across 12 distinct agencies. Awards covered in the top-customer list represent 74% of recent awards, though dollars are concentrated in the single large Corps of Engineers contracts.

Capability footprint is concrete and marine-focused: underwater structural work including cofferdam installation and dewatering operations; bank stabilization and erosion control; dredging and material excavation; floating and fixed pier structural repairs and installation; emergency dive response for oil spills and hazardous-chemical incidents; and cathodic protection and marine infrastructure maintenance. Representative work includes the $34,499 Coast Guard contract for floating pier repairs at Station Tybee Island, Georgia (April 2023), a $20,000 delivery order under the Nashville MATOC for stabilization work in Tennessee (March 2023), and multiple small total-small-business BPA calls and purchase orders for dive operations and marine construction across Corps of Engineers district offices.

Activity trajectory shows volatility: four awards in 2022, dropping to one in 2024, then rising to four in 2025. The vendor faces a recompete cliff with two awards (combined potential value $5.8 million) scheduled for completion within the next twenty-four months. On the subcontractor side, Underwater Mechanix performs marine construction and dive-team support under primes including Vectrus Systems LLC (potable water and infrastructure work at Naval Station Guantanamo Bay, awarded December 2025), RQ Construction LLC (magnetic silencing facility repairs at Naval Station Kings Bay, Georgia, October 2024), Gilbane Federal (station reconstruction in Panama City Beach, Florida, September 2022), and D7 LLC (piling installation for a lighterage mooring berth, June 2022).

SCI-reported invoicing for federal service contracts above the $150,000 threshold totaled $4 million across FY2022–FY2023 (prime records), with 9.1 FTEs in FY2022 and 7.5 FTEs in FY2023. Government-paid hourly rates on those prime contracts ran a median of $118.99/hr, with the spectrum ranging from $86.71/hr at the tenth percentile to $151.27/hr at the ninetieth percentile. Across SCI-reportable prime contracts, the vendor performed 100% of contractor hours in-house, with no subcontractor labor share recorded. The vendor's broader federal footprint — encompassing goods (dredging, materials, equipment), micro-purchases, and classified work — is substantially larger than the SCI slice. Combined obligated dollars across all awards total $41.1 million (89% of combined potential value across 31 prime and sub awards), indicating a relatively mature portfolio with high execution and obligation rates.

Underwater Mechanix Services LLC is a woman owned small business providing a full range of commercial diving services, including underwater inspection, repair, maintenance and installation. We will travel and offer 24 hour emergency service.