Sea1 Offshore Inc. Overview
Pro stress-test →Sea1 Offshore owns and operates offshore support vessels for the offshore energy service industry. The company was formerly known as Siem Offshore Inc. and changed its name to Sea1 Offshore Inc. in May 2024. The company serves both traditional oil/gas and renewable energy sectors across multiple global regions.
Strategic Profile
Pro stress-test →The company operates through Subsea Vessels, Anchor-Handling Tug Supply (AHTS) Vessels, Platform Supply Vessels (PSVs), Fast Crew & Oil Spill Recovery Vessels, and provides services including anchor handling, towing, platform supply, well intervention, subsea operations, and trenching for windfarms. It operates in the North Sea, Brazil, Australia, Canada, Southeast Asia, South America and West Africa.
Competitive Landscape
Pro stress-test →Sea1 Offshore competes in the global offshore support vessel market alongside major operators like Subsea 7 and Bristow Group. The company differentiates through its diversified fleet, specialized vessel types (subsea construction, well-intervention), and global operational presence. Competition is driven by vessel utilization rates, contract wins, and operational efficiency in cyclical energy markets.
Industry Context
Sea1 Offshore Inc. operates in Offshore Energy Services / Offshore Support Vessels.
Key facts
Founded: 2005 · Headquarters: Kristiansand, Norway · Employees: 1,390 · Revenue: $272M (TTM as of Sep 2025) · Market cap: 3.98B NOK