Cenac Marine

What Cenac Marine does

Cenac Marine Services, L.L.C. is a third-generation, family-owned marine transportation and vessel services company headquartered in Houma, Louisiana. Founded in the 1920s and operating continuously for more than 100 years, the company provides marine towing and tank barge transportation of crude oil, residual fuels, petrochemicals, and LPGs across the US Inland Waterways System, alongside construction, repair, repowering, and maintenance of push boats and tank barges. Its primary customers are major oil companies, refineries, and energy-sector shippers, served through direct B2B sales and long-term contracts; pricing is quote-based and not publicly disclosed. The company is led by Arlen "Benny" Cenac Jr. and employs approximately 400 people.

The company's core asset base is a modern, inland-waterways fleet that company leadership describes as the youngest in the industry, supported by a dedicated support facility on the Intracoastal Waterway. Cenac is among the earliest recipients of a US Coast Guard Certificate of Inspection under Subchapter M and holds Towing Safety Management System (TSMS) certification administered through ABS as third-party organization. The business is vertically integrated through Main Iron Works (acquired 2016), a wholly-owned subsidiary handling marine vessel construction, tugboat building, and repair.

The revenue model is service-based and transaction-fee in nature, encompassing towing and transportation contracts plus professional services revenue from vessel construction and repair. In 2019, the company divested a package of inland tank barges and modern vessels to Kirby Corporation, an event that materially reshaped the operating fleet but did not interrupt operations. The company remains privately held with no institutional or private equity ownership disclosed, and growth signals are primarily organic — craft-labor hiring, regulatory and safety credentialing, and training partnerships rather than acquisitions, capital raises, or geographic expansion.

Name

Cenac Marine

Legal name

Cenac Marine Services, L.L.C.

Website

https://cenac.com

Company type

Private

Founded year

1920

Operating status

Operating

Headcount range

51–100 employees

Short description

Cenac Marine Services is a third-generation, family-owned marine transportation company headquartered in Houma, Louisiana, providing towing, tank barge transport of petroleum and LPG cargo, and vessel construction, repair, and maintenance across the US Inland Waterways System to oil, gas, and refinery customers.

Ownership category

akta.pro rank

Product category

Marine Transportation Services

NAICS

Deep Sea, Coastal, and Great Lakes Water Transportation (48311), Ship and Boat Building (3366), Support Activities for Water Transportation (4883)

SIC

Water Transportation (4400), Ship & Boat Building & Repairing (3730)

akta.pro primary industry

Coastal/Sea Towage (Long-Distance Towing of Vessels/Barges) (TLAHAHAE)

akta.pro secondary industries

Marine Terminals & Cargo Handling Infrastructure (RoRo, Bulk, Container) (IMAFAJAF), Marine Electrical Installation, Commissioning & Field Services (IMAJAJAL)

Keywords

• Marine towing services
• Inland waterway transportation
• Tank barge operations
• Vessel construction repair
• Petroleum marine logistics

Headquarters

HQ city

Houma

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales, Supply Chain

Revenue model

1. Marine Towing and Transportation Services: Towing and transportation services for inland waterways including push boat operations and tank barge transportation of liquid petroleum and other cargo.
2. Vessel Construction, Repair, and Maintenance: Construction, repair, repowering, and maintenance of push boats and tank barges for internal fleet and potentially external customers.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Cenac Marine Services provides marine towing and tank barge transportation of liquid petroleum, natural gas, propane, and other cargo on the US Inland Waterways System, primarily serving oil companies and refineries. The company also constructs, repairs, repowers, and maintains push boats and tank barges, including through its wholly owned Main Iron Works subsidiary, delivering vertically integrated marine logistics and fleet support.

Product overview

Cenac Marine Services is a marine transportation company offering a comprehensive suite of services for the inland waterways industry. The core offerings include marine towing and tugboat operations, tank barge transportation for petroleum and natural gas products, and vessel construction, repair, and repowering services. The company also provides tankerman training through a partnership with South Louisiana Community College. All vessel operations are TSMS certified and Subchapter M compliant, with oversight from third-party organization ABS.

Differentiator

Problem solved

Functional benefit

Products and services

• Marine Towing Services
• Tank Barge Transportation
• Push Boat and Tank Barge Construction
• Vessel Repair, Repowering, and Maintenance
• Tankerman Training Program

Quantifiable outcome

• LWCC Safest 70 Award received for multiple years (2015, 2016, 2020, 2022) demonstrating safety excellence

Named customers1 record

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Four partnerships are on record, tiered minor and core.

• Louisiana Wildlife FederationminorOthers · 1 January 2018Cenac was a proud supporter of the 54th Governor's State Conservation Achievement Awards Program, supporting conservation and education of Louisiana wildlife and coastal restoration efforts.
• American Bureau of Shipping (ABS)coreTechnology or Integration · 1 December 2017ABS was awarded the third party organization (TPO) contract to provide Subchapter M compliance oversight. ABS serves as Cenac's sole TPO, providing oversight of their Internal Survey program and additional support with ABS surveyors. Partnership established to ensure Cenac's safety and maintenance standards comply with USCG Subchapter M requirements.
• South Louisiana Community College (SLCC)coreStrategic or Co-development Partner · 1 November 2017Cenac donated a fully refurbished 158-foot by 40-foot tank barge to SLCC's Maritime Training Program. The barge is an exact replica of a standard Cenac tank barge and enables hands-on training for students. Two Cenac boat captains serve as tankerman instructors. Partnership supports training the next generation of maritime industry professionals.
• Wounded Warrior ProjectminorOthers · 1 January 2016Cenac is a proud sponsor of the Wounded Warrior Project. Company hosts Wounded War Heroes during the annual Houma Oilman's Fishing Tournament, providing lodging, transportation, and fishing experiences for veterans.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Direct peers

• Crescent Towing: Gulf-based marine towing and harbor services operator with comparable push boat and tank barge operations on the Gulf Intracoastal Waterway, competing for the same oil & gas and petrochemical customers as Cenac.
• Kirby Corporation: Largest US inland tank barge operator and a direct competitor on the Inland Waterways, transporting petroleum and petrochemicals. Kirby is also a counterparty that acquired part of Cenac's fleet in 2019, validating Cenac's asset quality.
• Florida Marine Transporters: Operates one of the largest fleets of inland tank barges and towboats in the US, with deep Gulf Coast and Intracoastal Waterway presence serving petrochemical and petroleum customers similar to Cenac.
• Campbell Transportation Company: Inland marine towing and barge operator serving the US river system with push boats and tank barges for petroleum and chemical customers — directly comparable fleet, customer base, and service offering to Cenac.
• Bouchard Transportation: Family-owned marine transportation company operating tank barges and tugboats along the US coast and inland waterways, transporting petroleum and chemical cargo — closely comparable in service mix and customer types to Cenac.
• Marquette Transportation Company: Inland marine transportation company operating tank barges and towboats on the Mississippi River System and Gulf Intracoastal Waterway — directly overlapping service territory and customer base with Cenac.
• McAllister Towing & Transportation: Long-standing family-owned marine towing and transportation company operating tugboats and barges along the US East Coast, Gulf, and inland waterways — comparable in heritage, family ownership, and petroleum customer base to Cenac.
• American River Transportation Company (ARTCO): Subsidiary of Archer Daniels Midland operating one of the largest US inland barge fleets, transporting both liquid and dry cargo. Comparable in scale, route network, and liquid-bulk tank barge operations to Cenac.

Broad incumbents

• Overseas Shipholding Group (OSG): Larger diversified marine transportation company with tankers and articulated tug-barges moving petroleum and chemicals in US waters. Overlaps with Cenac in liquid-bulk marine transport but operates at significantly larger scale and broader geographic scope.

Others

• American Bureau of Shipping (ABS): Maritime classification society and Cenac's sole third-party organization for Subchapter M and TSMS compliance. Included as an ecosystem partner rather than a competitor; relevant for understanding the regulatory architecture that shapes Cenac's compliance moat.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/cenac-towing

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Cenac Marine