About Us

For over 20 years, The Thoma-Sea family of companies have been constructing quality vessels for the commercial marine sector. In early 1990, Thoma-Sea Boat Builders, Inc. started with a single shipyard located along the bank of the Intracoastal Waterway in Houma, La. There the Thomassie family began building projects for brown water towing and vessels for foreign fisheries. Thoma-Sea continued to expand, building offshore tugs, escort tugs, and small PSV's.

In January 2003, Thoma-Sea expanded by purchasing the then defunct Halter Shipyard in Lockport, Louisiana. This spelled the beginning of Thoma-Sea Shipbuilders, L.L.C. The acquisition of the Lockport facilities added the capacity to build larger, more complex vessels, and Thoma-Sea soon became a regional leader in PSV construction. Continued investments at the Lockport facility have continued to increase capabilities and productivity.

In 2005, Thoma-Sea expanded it's operations by breaking ground on a new construction facility in Houma, becoming the first tenant for the newly developed Port of Terrebonne.

In 2008, Thoma-Sea began repair and conversion operations in the Port of Terrebonne, and is currently expanding the repair/ conversion operations through the development of a new 60 acre siite.

In 2010 Thoma-Sea merged the Lockport & Houma facilities under one entity, and Thoma-Sea Marine Constructors, L.L.C. was born. Utilizing the combined resources of multiple locations, Thoma-Sea is able to compete favorably, and offer exceptional value for our customers in the marine industry.

Our Services


Contact Us

Call us at

(985) 853-0620

Or submit your information and we will contact you regarding your needs.

Manufacturers & Distributors

We listened - access to Influencers is a challenge and penetrating new markets is tough. Therefore, we’ve built a powerful database to attract new customers.

Engineers & Designers

We listened - sourcing equipment is a pain and comparing equipment data online is impossible. Therefore, we’ve built a powerful database to fix that.

Shipyards & Vessel Owners

We listened - calling, emailing and faxing numerous Vendors creates long exhaustive days. Therefore, we’ve built a powerful platform to streamline communication.