What Seacor Marine Holdings does

SEACOR Marine Holdings Inc. is a Houston-based, publicly-traded (NYSE: SMHI) provider of offshore marine transportation and logistics services to the global offshore energy industry, principally oil and gas exploration and production companies and offshore wind farm operators. Founded in 2017 as a spin-off from SEACOR Holdings Inc. and headquartered at 12121 Wickchester Lane, Houston, the company operates a 38-vessel fleet spanning five continents across Platform Supply Vessels (PSVs), Fast Support Vessels (FSVs) including the proprietary McCall and CREWZER sub-brands, liftboats, crew transfer vessels, anchor handling towing supply vessels, emergency response vessels, and specialty vessels.

The company is a first-mover in hybrid battery-powered offshore vessels, having delivered the first hybrid PSV to the Americas and Asia and the first hybrid battery-powered well stimulation vessel. Core technologies include lithium battery hybrid power systems integrated with diesel-electric propulsion (reducing fuel consumption and emissions by up to 20%), DP1/DP2/DP3 dynamic positioning, dynamic ride control, ballast water treatment systems, and IMO 2020 low sulfur fuel compliance. SEACOR Marine is ISO 9001/14001/45001 certified and holds additional certifications under ISM, ISPS, STCW, MARPOL, SOLAS, and MLC 2006, with recent industry recognition including the 2025 NOIA Culture of Safety Award and 2025 OSJ Environmental Award.

SEACOR Marine generates revenue through contract-based time charters, voyage charters, and service contracts negotiated directly with enterprise energy clients, with Q4 2025 average day rates of $17,519 and 69% fleet utilization. The company maintains a record contracted revenue backlog exceeding $500 million as of year-end 2025 and is executing a fleet renewal strategy through two newbuild 4,650 DWT Integrated Hybrid PSVs scheduled for delivery in Q4 2026 and Q1 2027. The business model is capital-intensive, with fleet financing historically provided by EnTrust Global via sequential term loan facilities ($122M in 2023, $391M in 2024). The company's enterprise value exceeds $1 billion against a market capitalization of approximately $181 million, and shareholder activists in 2026 are pressing for strategic alternatives given the gap to broker-appraised NAV.

Name

Seacor Marine Holdings

Legal name

SEACOR Marine Holdings Inc.

Website

https://seacormarine.com

Company type

Public

Founded year

2017

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

SEACOR Marine (NYSE: SMHI) is a Houston-based provider of offshore marine transportation and logistics services to global oil and gas and offshore wind operators, operating a diversified 38-vessel fleet across five continents with record backlog above $500M.

Ownership category

akta.pro rank

Product category

Offshore Marine Transportation Services

NAICS

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

SIC

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

akta.pro primary industry

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

akta.pro secondary industry

Offshore Support & Marine Logistics Vessel Operators (PSV/AHTS) (TLADABAL)

Keywords

• Offshore support vessels
• Marine transportation services
• Platform supply vessels
• Offshore crew transfer
• Offshore wind support

Headquarters

HQ city

Houston

HQ country

United States

HQ region

North America

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Personnel, Infrastructure, Others

Revenue model

1. Offshore Marine Transportation Services: SEACOR Marine generates revenue through chartering and operating offshore support vessels to serve the global offshore energy industry. Revenue is derived from time charters, voyage charters, and service contracts for vessels providing crew transportation, cargo supply, accommodation, and maintenance support to offshore installations worldwide.
2. Vessel Contract Services: The company provides comprehensive offshore support services including platform supply, fast crew transfer, liftboat operations, and emergency response services under long-term contracts with major oil and gas operators. Revenue is earned through contracted day rates and service fees.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

SEACOR Marine provides global marine and support transportation services to offshore energy industries, predominantly oil and gas exploration and production, and offshore wind. The company operates and manages a diversified fleet of 38 offshore support vessels including Platform Supply Vessels (PSVs), Fast Support Vessels (FSVs), and Liftboats, delivering crew transportation, platform supply, accommodation, and maintenance support across five continents.

Product overview

SEACOR Marine operates a diversified fleet of offshore support vessels providing global marine and support transportation services to offshore energy facilities. The company offers multiple vessel categories: Platform Supply Vessels (PSVs) including Hybrid PSVs for cargo transport and supply; Fast Support Vessels (FSVs) including McCall class and CREWZER class catamarans for crew transportation; Liftboats for offshore construction, maintenance and decommissioning; plus Crew Transfer Vessels, AHTS, Emergency Response vessels, and Specialty vessels. The portfolio also includes newbuild Integrated Hybrid PSVs scheduled for delivery in late 2026/early 2027. The company pioneered hybrid battery powered solutions in the offshore marine industry and continues to invest in environmentally sustainable vessel technologies.

Differentiator

Problem solved

Functional benefit

Brands

• McCall FSVs: Fast Support Vessels in the McCall class, featuring over 13,000 BHP, speeds exceeding 38 knots, and lengths ranging from 130 to 206 feet. The McCall brand originated from Norman McCall who pioneered crew boat technology.
• CREWZER

Products and services

• Platform Supply Vessels (PSVs) Offshore support vessels ranging from 190 to over 250 feet in length used to transport essential material and equipment to support deepwater drilling and production operations. Features include Dynamic Positioning systems, methanol carrying capability, high-volume liquid mud, and dry bulk capacities. Used by offshore oil and gas E&P operators and drilling contractors.
• Fast Support Vessels (FSVs) High-speed vessels reaching speeds over 38 knots, ranging from 145 to 200 feet in length. Includes McCall class vessels with over 13,500 BHP and CREWZER class catamarans capable of carrying up to 150 passengers at speeds up to 40 knots, offering a cost-efficient alternative to helicopter transportation for crew transfers.
• Liftboats Self-propelled vessels ranging from 235 to 300 feet in leg length, providing stable platforms for offshore wind farm installation and maintenance, production platform construction, inspection, maintenance and removal, well intervention and work-over, and decommissioning operations in water depths up to 230 feet. Used by offshore wind developers and oil and gas operators.
• Crew Transfer Vessels Vessels designed for efficient personnel transfer to offshore installations, supporting the offshore wind and oil and gas industries with reliable crew transportation services.
• Anchor Handling Towing Supply Vessels (AHTS) Vessels designed for offshore anchor handling, towing operations, and supply duties supporting offshore drilling and production activities.
• Emergency Response and Rescue Vessels (ERRVs) Specialized vessels providing emergency response services and rescue capabilities for offshore operations.
• Specialty Vessels Specialized offshore support vessels designed for unique or specialized maritime operations beyond standard vessel categories.

Quantifiable outcome

• Fuel consumption and emissions reduced by up to 20% with hybrid vessel technology
• +2 more outcomes

Named customers2 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Scale indicators7 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Hornbeck Offshore Services: OSV operator focused on deepwater Gulf of Mexico with PSVs, AHTS, and OSVs serving similar offshore E&P customers. Comparable vessel categories and customer base, though smaller scale post-financial restructuring.
• DOF Group: Norwegian-based OSV operator with PSV, AHTS, and subsea vessel fleet serving offshore oil and gas and renewables customers globally. Comparable vessel categories, geographic footprint, and contract-based day rate revenue model.
• Solstad Offshore: Norwegian-based global OSV operator providing PSVs, AHTS, and subsea construction vessels to offshore oil and gas and offshore wind markets. Comparable fleet composition and customer overlap in the North Sea, Mediterranean, and select international regions.
• Tidewater Inc. Largest global offshore support vessel operator with a fleet of PSVs, AHTS, crew boats, and other OSVs serving offshore oil and gas and wind customers across similar geographies. SEACOR's PSVs, FSVs, AHTS, and liftboats directly compete head-to-head across the Gulf of America, Latin America, West Africa, and Southeast Asia.
• Siem Offshore: Norwegian-based offshore vessel operator with PSVs, AHTS, and subsea construction vessels serving global offshore oil and gas and renewables customers. Comparable vessel categories and contract-based day rate revenue model.
• Maersk Supply Service: Subsidiary of A.P. Moller-Maersk operating a global fleet of OSVs including PSVs, AHTS, and subsea support vessels. Comparable vessel categories and service offering to offshore oil and gas and renewables clients across multiple geographies.
• Bourbon Corporation: French-headquartered global OSV operator with a fleet of PSVs, AHTS, and crew boats serving offshore oil and gas customers in West Africa, Europe, and Asia. Comparable vessel categories, customer base, and contract-based day rate revenue model.
• Edison Chouest Offshore: Privately held major OSV operator with a diverse fleet of PSVs, AHTS, crew boats, and specialty vessels serving global offshore oil and gas and wind markets. Comparable scale, vessel mix, and customer overlap with SEACOR Marine, particularly in the Gulf of America and select international regions.

Broad incumbents

• Vantage Drilling International: Offshore drilling contractor with some support vessel exposure, serving overlapping offshore oil and gas E&P customers. Less direct overlap on vessel categories but similar customer base and offshore industry exposure to SEACOR.

Regional players

• Vallianz Holdings: Singapore-based OSV operator with PSVs, AHTS, and crew boats primarily serving Middle East and Southeast Asia offshore oil and gas markets. Overlaps with SEACOR's Middle East/Asia operations but with limited direct competition in the Americas.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/seacor-marine-inc

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries1 record

Funding overview

Funding rounds4 records

Investors1 record

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

M&A1 record

Investments

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

Frequently asked questions about Seacor Marine Holdings