What Sanco Group does

Sanco Group AS is a privately-held Norwegian offshore vessel operator headquartered in Gjerdsvika, Norway, founded in 1996 by Ivar Slettevoll. The company owns and operates a fleet of five purpose-built seismic vessels — Sanco Star (2008), Sanco Spirit (2009), Sanco Sailor/Atlantic (2010), Sanco Swift (2013), and Sanco Sword (2014) — configured for 2D, 3D, and 4D marine seismic survey operations. Vessels are equipped with advanced airgun systems, MAN 32/40 diesel engines, and D-Value helidecks, and are designed to conduct offshore seismic data acquisition without costly port calls. Sanco Group was the first operator to deploy Teledyne's newly engineered cast-component Bolt 1900 Airgun, reflecting ongoing technology adoption.

The company serves major international geophysical and oil & gas exploration companies through long-term charter contracts and project-based engagements. Revenue is generated through vessel charter and seismic survey services on a recurring contract basis, with pricing negotiated directly with clients based on project scope, duration, and vessel requirements. The company's distribution model is direct enterprise field sales, with no intermediaries. Family-controlled with no disclosed external investors, Sanco Group is managed by a specialized team including a Master Mariner HSEQ Manager and a Chief Engineer CTO, supporting its positioning as a high-reliability vessel operator serving the offshore energy industry.

Name

Sanco Group

Legal name

Sanco Group AS

Website

https://sanco.no

Company type

Private

Founded year

1996

Operating status

Operating

Headcount range

251–500 employees

Short description

Sanco Group AS is a Norwegian offshore vessel operator founded in 1996 that owns and operates five purpose-built seismic vessels serving major international geophysical and oil & gas exploration companies through long-term charter contracts.

Ownership category

akta.pro rank

Product category

Offshore Seismic Vessel Charter

NAICS

Navigational Services to Shipping (488330)

SIC

Water Transportation (4400), Oil & Gas Field Exploration Services (1382)

akta.pro primary industry

Seismic Survey & Geotechnical Offshore Vessel Construction (IMAJACAF)

Keywords

• Offshore vessel charter
• Seismic survey services
• Marine geophysical operations
• Vessel fleet management
• Offshore energy support

Headquarters

HQ city

No

HQ country

Denmark

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Marketing or Sales

Revenue model

1. Vessel Charter and Seismic Survey Services: Sanco Group owns and operates a fleet of seismic vessels (Sanco Sword, Sanco Swift, Sanco Sailor, Sanco Spirit, Sanco Star) providing seismic survey services to geophysical companies. Revenue is generated through long-term charter contracts and project-based seismic survey operations for clients in the offshore energy industry.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Sanco Group AS owns and operates five purpose-built seismic vessels — Sanco Star (2008), Sanco Spirit (2009), Sanco Sailor (2010), Sanco Swift (2013), and Sanco Sword (2014) — delivering 2D, 3D, and 4D marine seismic survey services to major international geophysical companies. The company provides direct vessel charter, ship management, and operational support including at-sea bunker and provision replenishment to avoid costly port calls.

Product overview

Sanco Group operates as a single unified fleet of purpose-built seismic vessels serving the offshore energy industry. The company owns and operates five advanced seismic vessels—Sanco Star (2008), Sanco Spirit (2009), Sanco Sailor/Atlantic (2010), Sanco Swift (2013), and Sanco Sword (2014)—capable of delivering 2D, 3D, and 4D seismic survey services. Originally founded in 1996 to supply bunkers and provisions to seismic vessels at sea, the company evolved to become an operator of highly advanced seismic survey vessels working for major geophysical companies worldwide.

Differentiator

Problem solved

Functional benefit

Products and services

• Sanco Star Purpose-built seismic vessel entered service in 2008, measuring 80M in length with 16M max breadth and 3953T gross tonnage, equipped with a D-Value 20M 11T helideck for offshore operations. Used by major geophysical companies for marine seismic surveys.
• Sanco Spirit Purpose-built seismic vessel built in 2009, measuring 86.5M in length with 16.0M max breadth and 4396T gross tonnage, designed for offshore seismic survey operations serving geophysical companies.
• Sanco Sailor (Sanco Atlantic) Purpose-built seismic vessel built in 2010, the largest in the fleet at 106.80M length with 19.20M max breadth, powered by a MAN 32/40 engine producing 13000 kW, used for offshore seismic survey operations.
• Sanco Swift Purpose-built seismic vessel built in 2013, measuring 96.15M in length with 23.0M max breadth, equipped with four MAN 32/40 engines delivering 4 x 4000 kW for advanced seismic survey operations.
• Sanco Sword Purpose-built seismic vessel built in 2014, measuring 96.15M in length with 23.0M max breadth, powered by four MAN 32/40 engines producing 4 x 4000 kW for seismic survey operations supporting 2D, 3D, and 4D offshore data acquisition.
• Marine Seismic Survey Services End-to-end marine seismic survey service delivering 2D, 3D, and 4D offshore data acquisition for geophysical companies, executed from purpose-built vessels equipped with advanced airgun systems and navigation capabilities.
• At-Sea Bunker and Provision Replenishment At-sea support service supplying bunkers and provisions to seismic vessels while in operation, eliminating costly port calls and supporting continuous survey operations.

Quantifiable outcome

• 25% weight reduction in airgun components
• +1 more outcomes

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

Feature1 record

Partnerships

One partnership is on record.

• Teledyne Geophysical InstrumentscoreTechnology or Integration · 14 January 2026Sanco Group became the first operator in the marine seismic industry to deploy Teledyne's newly engineered cast components for the Bolt 1900 Airgun. Sanco Group was instrumental in the testing and validation process. The cast components replace machined stainless steel parts using advanced casting processes, offering 25% weight reduction, improved durability, and enhanced reliability while remaining compatible with existing systems. Both companies view the deployment as a significant advancement for offshore seismic operations.

Scale indicators4 records

Recent moves5 records

Expansion highlights3 records

Regional players

• Solstad Offshore: Norway-based offshore vessel operator providing AHTS, PSV, and subsea construction vessels to global offshore energy markets. Comparable as a Norwegian-headquartered offshore vessel operator serving the same offshore energy client base, though focused on subsea/PSV/AHTS rather than seismic.
• DOF Subsea: Norway-based owner and operator of subsea construction, offshore support, and IMR vessels serving the global offshore energy industry. Comparable to Sanco as a Norwegian offshore vessel operator serving offshore energy clients, but focused on subsea/IMR rather than seismic.
• Siem Offshore: Norwegian offshore vessel owner and operator providing AHTS, PSV, and offshore subsea construction vessels to the global offshore energy market. Comparable to Sanco as a Nordic offshore vessel operator serving energy clients, though focused on support rather than seismic.

Direct peers

• PGS (Petroleum Geo-Services): Global marine seismic acquisition company operating one of the largest fleets of seismic vessels and providing 2D/3D/4D data to oil & gas clients. Directly comparable to Sanco Group in core activity (seismic survey vessel operations), customer base (international geophysical/oil & gas), and 2D/3D/4D capability, though at materially larger scale.
• Shearwater GeoServices: Operator of a large fleet of seismic vessels providing marine seismic acquisition and processing services to oil & gas and offshore renewables clients. Directly comparable vessel-operator business model and target market to Sanco Group.
• Polarcus: Marine seismic acquisition company operating a fleet of modern seismic vessels providing 3D and 4D seismic data acquisition services to oil & gas clients. Closely comparable to Sanco Group in vessel-operated seismic acquisition services.
• TGS: Leading multi-client geoscience data company that charters and operates seismic vessels to acquire subsurface data for the offshore energy industry. Direct comparable to Sanco in seismic acquisition services and target customer base, with a strong position in 2D/3D/4D seismic data.
• CGG (Compagnie Générale de Géophysique): Global geophysical services company operating seismic vessels and providing geological/geophysical data and services to oil & gas exploration companies. Comparable to Sanco in vessel-based seismic acquisition and offshore E&P customer base.

Broad incumbents

• WesternGeco (Schlumberger): Subsidiary of SLB operating a large fleet of seismic vessels for offshore oil & gas exploration and integrated geophysical services. Overlaps with Sanco's core seismic vessel business, but at significantly larger scale and as part of SLB's broader energy services portfolio.

Emerging players

• Bourbon (offshore services): Global operator of offshore support vessels (AHTS, PSV, subsea) serving oil & gas and offshore wind clients, including seismic-related field work. Comparable in vessel-based offshore services model and adjacent to Sanco's seismic-focused niche.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/sancoshipping
• LinkedInlinkedin.com/company/sanco-shipping

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

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 Sanco Group