Thoma-sea Marine Constructors LLC

6130 Highway 308, Lockport, LA 70374

LIKELY ACTIVELAST SEEN IN FEDERAL DATA MAY 2026 · 2 SOURCES

Operating signal within 24 months, or from a single source.

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What they make

Ship Building and Repairing336611

Where it is

29.65365, -90.53592 · CENSUS TIGER

COUNTY

Lafourche County

METRO AREA

Houma-Bayou Cane-Thibodaux, LA

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Other plants nearby

Facility	City	Industry	Status	Distance
G&s Marine INC	Lockport	Turbine and Turbine Generator Set Units Manufacturing 333611	UNVERIFIED	0.8 KM
Bollinger Shipyards Lockport, L.l.c.	Lockport	Ship Building and Repairing 336611	ACTIVE	6.0 KM
Bollinger Shipyards Lockport LLC	Lockport	Ship Building and Repairing 336611	LIKELY ACTIVE	6.3 KM
Bendco #'s 2 & 3 Tank Battery - Valentine Field	Valentine	Boat Building 336612	UNVERIFIED	9.1 KM
Bourg Dry Dock & Service CO	Bourg	Ship Building and Repairing 336611	LIKELY ACTIVE	10.3 KM

Every listed plant in Lafourche County

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 8 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in AIR, AIRS/AFS, BR, EIS, LA-TEMPO, NPDES, OSHA-OIS, RCRAINFO, TRIS · EPA site type STATIONARY.

SAM.gov entity registrationOPERATING
Record MKC5N9TCVJL5 · first seen MAY 2026 · last seen MAY 2026
EPA Facility Registry ServiceEXISTENCE
Record 110012383438 · first seen JUN 2017 · last seen JUN 2017

ALSO RECORDED ASTHOMA-SEA MARINE CONSTRUCTORS LLC - LOCKPORT YARD

IN LAFOURCHE COUNTY19 other plants share this one’s industry (Ship and Boat Building, NAICS 3366); 6 of them have a size band on record.

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

NameSOURCES DISAGREE: EPA: THOMA-SEA MARINE CONSTRUCTORS LLC - LOCKPORT YARD · JUL 2026; SAM.gov: THOMA-SEA MARINE CONSTRUCTORS LLC · MAY 2026 · ON THIS PAGE
Street address: EPA: 6130 HIGHWAY 308 · JUL 2026 · ON THIS PAGE; SAM.gov: 6130 HIGHWAY 308 · MAY 2026 · ON THIS PAGE
City: EPA: LOCKPORT · JUL 2026 · ON THIS PAGE; SAM.gov: LOCKPORT · MAY 2026 · ON THIS PAGE
State: EPA: LA · JUL 2026 · ON THIS PAGE; SAM.gov: LA · MAY 2026 · ON THIS PAGE
County (FIPS code): EPA: 22057 · SEP 2026
Coordinates: EPA: 29.65365,-90.53592 · JUL 2026
CAGE code: SAM.gov: 8AWY3 · MAY 2026
SAM registration expires: SAM.gov: 2027-05-14 · MAY 2026

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