Southwest Shipyard LP

What they make

• shipbuilding
• gas freeing
• cleaning
• steaming
• flaring
• surface preparation
• painting
• wastewater treatment
• South Texas
• deep water access
• government marine industry

NAMED ON THE COMPANY’S OWN WEBSITE, READ JUL 29, 2026

Open positions

Openings read from Southwest Shipyard LP’s own job board on ADP, last checked OCT 26, 2026. FactoryRegistry does not host applications — each title opens the posting where the company published it.

• Deckhand - Channelview, TX
  Channelview, TX, US · posted OCT 21, 2026
• Foreman - Gas Front
  Channelview, TX, US · posted OCT 15, 2026
• Barge Cleaners
  Channelview, TX, US · posted AUG 17, 2026
• Industrial Blaster / Painter
  Channelview, TX, US · posted NOV 20, 2025
• Structural Fitter
  Channelview, TX, US · posted OCT 30, 2025
• Welder (SMAW)
  Channelview, TX, US · posted OCT 30, 2025
• Welder Helper
  Channelview, TX, US · posted MAR 27, 2024

• Crawler Crane Operator (1ST SHIFT)
  Houston, TX, US · posted AUG 18, 2026
• Carpenter Helper
  Brady Island, Houston, TX, US · posted APR 27, 2026
• Welder (FCAW)
  Galveston, Galveston, TX, US · posted APR 18, 2026
• Welder Helper
  Houston, TX, US · posted APR 15, 2026
• Pipe Welder
  Houston, TX, US · posted JAN 8, 2026
• Structural Fitter
  Houston, TX, US · posted OCT 30, 2025
• Welder (SMAW)
  Brady Island, Houston, TX, US · posted OCT 30, 2025
• Combo (Welder and Fitter)
  Houston, TX, US · posted JAN 31, 2025

Where it is

Other plants nearby

Facility	City	Industry	Status	Distance
SJSan Jac Marine LLC	Channelview	Ship Building and Repairing 336611	● ACTIVE	2.7 KM
DEDelta Engineering	Houston	Ship Building and Repairing 336611	◐ LIKELY ACTIVE	5.9 KM
Rio Controls & Hydraulics INC	Channelview	Fluid Power Cylinder and Actuator Manufacturing 333995	● ACTIVE	5.7 KM
BRBrown & Root Incorporated Greens Bayou Fabrication Yard	Houston	Fabricated Structural Metal Manufacturing 332312	◇ UNVERIFIED	12.2 KM
Wilhelmsen Ships Service, INC	Pasadena	Other Basic Inorganic Chemical Manufacturing 325180	● ACTIVE	16.2 KM

Every listed plant in Harris County

Also at this address

No other federal record shares this street address.

Where this record comes from

6 sources hold this plant, and 12 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, CEDRI, ECRM, EIS, ICIS, NPDES, RCRAINFO, TRIS, TX-TCEQ ACR · EPA site type STATIONARY.

• The company’s own websiteOPERATING
  first seen JUL 2026 · last seen OCT 2026
• EPA Facility Registry ServiceEXISTENCE
  Record 110000463533 · first seen MAY 2026 · last seen MAY 2026
• SAM.gov entity registrationOPERATING
  Record XPM6UTXVLSB1 · first seen APR 2026 · last seen APR 2026
• EPA Toxics Release InventoryOPERATING
  first seen DEC 2024 · last seen DEC 2024
• DOL Form 5500 retirement plan filingsOPERATING
  Record 760515702|TX|77530|18310 market st · first seen DEC 2024 · last seen DEC 2024
• SBA Paycheck Protection Program loan recordsEXISTENCE
  Record TX|channelview|18310 market st · first seen APR 2020 · last seen APR 2020

IN HARRIS COUNTY23 other plants share this one’s industry (Ship and Boat Building, NAICS 3366); 3 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.

Name

EPA: SOUTHWEST SHIPYARD, LP · JUL 2026 · ON THIS PAGE

SAM.gov: SOUTHWEST SHIPYARD LP · APR 2026 · ON THIS PAGE

Street addressSOURCES DISAGREE

EPA: 18310 MARKET STREET · JUL 2026

SAM.gov: 18310 MARKET ST · APR 2026 · ON THIS PAGE

City

EPA: CHANNELVIEW · JUL 2026 · ON THIS PAGE

SAM.gov: CHANNELVIEW · APR 2026 · ON THIS PAGE

State

EPA: TX · JUL 2026 · ON THIS PAGE

SAM.gov: TX · APR 2026 · ON THIS PAGE

County (FIPS code)

EPA: 48201 · SEP 2026

Coordinates

EPA: 29.7933,-95.06496 · JUL 2026

Website

SAM.gov: https://www.swslp.com/ · APR 2026

CAGE code

SAM.gov: 31XZ9 · APR 2026

Retirement plan filing (Form 5500)

DOL: 380 active participants, plan year ending 2024-12-31, 2 plan(s) · DEC 2024

PPP loan

SBA PPP: PPP loan x1, approved 2020-04-05, 500 jobs reported · APR 2020

SAM registration expires

SAM.gov: 2027-04-06 · APR 2026

State business registration

TX Comptroller: SOUTHWEST SHIPYARD, L.P., registered with the Texas Comptroller of Public Accounts; Limited partnership; formed 1996-09-27; active · SEP 1996