Thoma-Sea Marine Constructors, L.L.C.

Thoma-Sea Marine Constructors, L.L.C. Headquarters Division is a for-profit limited liability company headquartered in Houma, Louisiana, that delivers ship repair, drydock maintenance, vessel construction, and maritime infrastructure services to federal agencies as a prime contractor on 100% of its recent awards — predominantly under total small business set-asides in the past three years, with a recurrence toward full-and-open competition on larger vessel construction work. The company operates under primary NAICS 336611 (Ship Building and Repairing) with a 1,300-employee size standard and holds a subsidiary, Thoma-Sea Marine Constructors LLC, certified as a small disadvantaged business.

Thoma-Sea's customer concentration is extreme and aligned to maritime mission-critical work. The Department of Commerce's National Oceanic and Atmospheric Administration dominates potential value with $650 million across two awards (59% of combined potential value), driven by a single $650.034 million definitive contract awarded June 23, 2023, for detail design and construction of Class B vessels with ultimate completion December 30, 2031. The Department of the Navy Naval Sea Systems Command follows at $212.8 million across three awards, while the Department of Homeland Security US Coast Guard anchors 34 awards worth $86 million combined potential value — the highest count but lower dollars per award than Navy work. The Army Corps of Engineers Engineering District Philadelphia contributes $95.6 million across ten awards, and the Department of the Army adds $26.3 million across four awards. These five customer agencies represent 97% of combined potential value and 88% of award count, with no customer beyond Navy, NOAA, or Army Corps appearing as a significant player.

Thoma-Sea operates on two parent vehicle frameworks. A $20 million multiple-award Blanket Purchase Agreement with the Army Corps of Engineers (awarded May 31, 2024, ceiling through May 30, 2029) generates three task orders for drydock services. A single-award Indefinite Delivery Contract with the Coast Guard (awarded May 5, 2026, ceiling $2.78 million) supported one $4.905 million delivery order issued the same day for USCGC Harry Claiborne drydock repairs. Most Coast Guard work flows through firm fixed-price definitive contracts and purchase orders rather than standing IDVs. Recent representative work includes the $650.034 million NOAA vessel construction contract, a $22.118 million Army definitive contract for Phase 1 shipyard preparation on the Dredge Hurley (awarded October 7, 2024, ultimate completion June 15, 2026), a $4.905 million Coast Guard delivery order for USCGC Harry Claiborne repairs (May 5, 2026), a $4.169 million Coast Guard definitive contract for USCGC Joseph Napier drydock repairs (June 10, 2025), and a $3.175 million Army total small business set-aside purchase order for Dredge Murden shipyard repairs (April 15, 2025).

Activity has remained volatile but broadly consistent over five years — three awards in 2022, nine in 2023, six in 2024, nine in 2025, and five through mid-2026 — reflecting the episodic nature of vessel availability cycles and large-vessel construction schedules. Four awards (combined potential value $31.3 million) face ultimate completion within the next twenty-four months, creating recompete exposure in the FY2026–FY2027 window. The $650 million NOAA contract reaching December 2031 presents the highest dollar exposure on the far side of the recompete cliff.

Thoma-Sea operates as a fully self-performing contractor on federal service contracts captured in the Service Contract Inventory. SCI data covering FY2022–FY2024 show $15.8 million in invoiced revenue across 17 reportable contracts at the prime level, with zero subcontractor engagement (0% sub-hours share across SCI records). Workforce scale ran 19.4 FTEs in FY2022, dropped to zero SCI-reportable FTEs in FY2023 (a function of which contracts crossed the $150,000 SCI reporting threshold), and reached 26.1 FTEs in FY2024. Government-paid hourly rates on SCI-reportable work ranged from $112.32/hr at the 10th percentile to a median of $173.57/hr and $232.29/hr at the 90th percentile, reflecting a mix of technician, skilled trades, and supervisory labor on drydock and maintenance tasks. The SCI dataset captures only service contracts above $150,000 and excludes goods, products, and the majority of the company's vessel construction and repair revenue; it represents a narrow slice of Thoma-Sea's federal services portfolio, not its total enterprise activity.

Thoma-Sea maintains no recorded subcontractor footprint in the source data — all 60 prime awards reflect direct contract vehicle awards to the parent company. The company's capability and competitive posture are entirely self-performed, leveraging its Houma facility's maritime infrastructure (drydock, fabrication bays, and waterway access meeting 12-foot minimum depth and 55-foot height clearance) and internal skilled workforce (welding certifications, coatings, thermographic inspection, hull preservation, and structural repair specializations). Competition occurs predominantly against other small businesses on total small business set-asides for Coast Guard routine drydock work, and full-and-open against all offerors on larger Navy and NOAA vessel construction contracts where Thoma-Sea's technical depth and facility position anchor its bids.