McDonough Marine Service

Name

McDonough Marine Service

Website

https://mcdonoughmarine.com

Company type

Private

Founded year

1945

Operating status

Operating

Headcount range

11–50 employees

Ownership category

akta.pro rank

Product category

Marine Transportation Services

NAICS

Support Activities for Water Transportation (4883), Other Support Activities for Water Transportation (48839)

SIC

Water Transportation (4400), Oil & Gas Field Services, Nec (1389)

akta.pro primary industry

Subsea Cable Construction, Marine Installation & Repair Services (HDAIALAC)

akta.pro secondary industry

Offshore Marine & Aviation Support (PSVs, AHTS, Crew Boats, Helicopters) (EUALABAJ)

Keywords

• Marine transportation services
• Marine logistics
• Vessel chartering
• Barge operations
• Jones Act shipping

Headquarters

HQ city

Metairie

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Core offering

McDonough Marine Service is a marine transportation and logistics company operating in the United States. The company provides Jones Act-compliant marine services, including support for subsea transmission cable installation for offshore wind projects, telecommunications infrastructure, and industrial subsea cable applications. Operations center on specialized vessel-based services, including a 300-foot Jones Act-compliant cable lay barge (Marmac 306) with a 3,500-ton capacity carousel expandable to 7,000 tons.

Product overview

McDonough Marine Service is a marine service company. The primary source data (mcdonoughmarine.com homepage) returns only a verification/loading page with no accessible product or service content. The news source references the company in the context of a Crowley-Nexans partnership for offshore wind cable installation, where the Marmac 306 barge is mentioned; however, this is not McDonough Marine Service's own product announcement.

Differentiator

Problem solved

Functional benefit

Products and services

• Jones Act-Compliant Cable Lay Services (Marmac 306)

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Three partnerships are on record, tiered core and supporting.

• Crowley Wind ServicescoreStrategic or Co-development Partner · 31 July 2025Strategic partnership between Nexans and Crowley Wind Services to develop and operate the Jones Act-compliant cable lay barge Marmac 306. The partnership aims to provide subsea transmission cable installation services for offshore wind projects, with the vessel designed to support Equinor's Empire Wind 810-MW array off New York, as well as telecommunications and industrial subsea cable applications. The 300-foot barge features a 3,500-ton capacity carousel expandable to 7,000 tons, vertical injectors, and dynamic positioning systems.
• NexanscoreStrategic or Co-development Partner · 31 July 2025Nexans announced partnership with Crowley Wind Services to develop and operate the Jones Act-compliant cable lay barge Marmac 306. Nexans brings subsea transmission cable installation expertise while the partnership operates the specialized vessel for offshore wind and telecommunications projects.
• LAD ShipyardsupportingTechnology or IntegrationLAD Shipyard in Morgan City, Louisiana built and outfitted the Marmac 306 cable lay barge. The shipyard constructed the 300-foot Jones Act-compliant vessel featuring a 3,500-ton expandable-to-7,000-ton capacity carousel.

Scale indicators2 records

Recent moves1 record

Expansion highlights2 records

Direct peers

• Subsea 7: Global subsea engineering and construction company specializing in subsea cable installation, SURF, and offshore wind cable lay. Comparable to McDonough because it delivers the same core service — installing subsea transmission cables for offshore wind and telecom — at much greater scale.
• Van Oord: Dutch marine contractor with a dedicated offshore wind subsea cable installation business. Comparable to McDonough because it bundles marine transport and installation capabilities to lay subsea power cables for offshore wind farms, the same use case McDonough targets with the Marmac 306.
• Nexans: Global cable manufacturer and subsea installation contractor, and an explicit strategic partner of McDonough in the Marmac 306 venture. Comparable because it designs, supplies, and installs subsea transmission cables for offshore wind and telecom — the same work McDonough supports.
• Global Marine Systems: Specialist submarine cable installation and maintenance company with its own cable lay fleet. Comparable to McDonough because it installs and maintains subsea telecommunications and power cables, overlapping with the telecommunications and industrial subsea use cases McDonough serves.
• Prysmian Group: World's largest cable manufacturer with its own subsea installation and cable lay vessel fleet. Comparable to McDonough because it integrates cable supply with marine installation for offshore wind and telecom subsea projects, directly adjacent to McDonough's value chain role.
• Jan De Nul Group: Marine and offshore contractor with substantial offshore wind cable installation and burial capabilities. Comparable to McDonough because it provides the integrated marine transport, vessel, and installation services required to install and bury subsea cables on offshore wind projects.

Broad incumbents

• Boskalis: Large Dutch marine services group with offshore wind subsea cable installation among its service lines. Comparable to McDonough as a broader incumbent offering similar subsea installation and marine transport capabilities, though across a far wider portfolio.
• Crowley Maritime Corporation: US marine solutions and logistics company with offshore wind services and Jones Act vessel operations, and McDonough's direct partner on the Marmac 306. Comparable because it provides marine transport, vessel operations, and offshore wind installation support to similar US-based customers.
• McDermott International: Global engineering, procurement, construction, and installation contractor for offshore energy. Comparable to McDonough because it delivers subsea and offshore installation services to the offshore wind and oil & gas markets that McDonough also addresses.

Regional players

• Edison Chouest Offshore: US-based, family-owned operator of offshore support vessels and marine service assets. Comparable to McDonough because it is a privately held, US-flagged marine services provider with specialized offshore vessels serving energy and infrastructure customers.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat2 records

Key risks5 records

Key highlights5 records

Customer concentration

• Xx.com/McDonoughMarine

Revenue estimate

Valuation estimate

Number of profiles

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 McDonough Marine Service