Edison Chouest Offshore
family of marine transportation companies

Edison Chouest Offshore (ECO), which started as Edison Chouest Boat Rentals in 1960, is a family of companies in the marine transportation business based in Cut Off, Louisiana. ECO owns and operates a fleet of platform supply vessels, Subsea Construction / IMR vessels, a Riserless Light Well Intervention vessel, Anchor handling tug supply vessels, Oil Spill Response Vessels, and Well Stimulation Vessels, as well as an independently owned fleet of Research Vessels and Ice Breakers.
Edison Chouest Offshore operates five shipyards:
North American Shipbuilding (NAS) in Larose, Louisiana was founded in 1974 on the Dixie Delta Canal running to Lake Salvador. 29.585°N 90.375°W / 29.585; -90.375
Gulf Ship LLC, in Gulfport, Mississippi, in 2007 30.427°N 89.0455°W / 30.427; -89.0455
Tampa Ship, the former Tampa Bay Shipbuilding, founded in 2008. 27.926°N 82.444°W / 27.926; -82.444
La Ship, in Houma, Louisiana, founded in 2011 29.547°N 90.7019°W / 29.547; -90.7019
North American Fabricators, (NAF), in Houma, Louisiana, founded in 1996 (now part of LaShip) 29.5699°N 90.700°W / 29.5699; -90.700
Estaleiro NavShip, in Navegantes, Brazil at Superporto do Açu on the Itajaí-Açu river founded in 2005 26.878°S 48.689°W / -26.878; -48.689
ECO's offshore vessels range from 109 feet to 525 feet.
Edison Chouest Offshore has an office in Houston Texas and has a fleet of over 200 vessels some with Remotely operated underwater vehicles (ROV-subsea).
Edison Chouest operates the Edison Chouest Offshore Training Center.
Port services
Port Fourchon C-Port and C-Logistics, loading and unloading, dockside services.
C-Innovation, riserless light well intervention (RLWI) services.
Martin Terminal large staging lot.
Begin with the source’s own compact description: “Edison Chouest Offshore” is family of marine transportation companies. The dossier treats that line as a proposition to test through Edison, Chouest and Offshore, not as a finished interpretation.
Why this record matters
The phrase “family of marine transportation companies” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Sep 11, 2026. The linked authority identifier is Q5338367. 1 of 2 selected statements include explicit references; 1 carry qualifiers and 0 use preferred rank. The first chronological checks are 1960, 1974, 2007 and 2008.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Edison Chouest Offshore”, its source revision and the description used here.
- Expand the search: follow Edison Chouest Offshore primary sources, Edison Chouest Offshore archive and Edison research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Edison Chouest Offshore”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “Edison Chouest Offshore” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.