Tristein AS

Tristein’s vision is to provide the international offshore and shipping industry with high standard services within marine operations. We deliver innovative quality solutions – at agreed time and price – without compromising the company’s zero accident policy. Our highly motivated and experienced staff ensures cost efficient processes within offshore installation, logistics, base services, engineering and vessel surveys. Our projects are planned, prepared and executed in close cooperation between master mariners and marine engineers/naval architects, ensuring an excellent combination of operational experience and technical know-how. Tristein offices located in Oslo, Stavanger and Kristiansund, all in Norway.

Marine Operations

  • Operation leads
  • Project management
  • Tow- masters/rig-moves
  • Offshore heavy lifts
  • Subsea installation
  • Cable/pipe laying

FPSO & Mooring Services

  • Marine project management/site engineers
  • Concept design/method statements
  • Marine and technical documentation
  • Transit and installation
  • Expediting OFE suppliers
  • In-service inspection mooring systems


  • Development of installation methods and equipment
  • Transport and seafastening design
  • Technical verification and documentation
  • Capacity/mooring analyses and verification
  • Technical evaluations


Base & Logistics Handling
A critical success factor for all offshore installation campaigns is safe and efficient handling of assets and equipment through a well prepared logistics chain including the installation base.

  • TristeinCoordination of activities related to agents and authorities
  • Organising base operations – site logistics
  • Providing Base management and crew
  • High and heavy module handling and transport

Renewable Energy
Utilising our experience within complex marine operations, we have successfully contributed in several Offshore Wind Park developments. Our approach has been to gain hands on experience while further developing industry specific operations, and to adapt tools and methods from the shipping and offshore industry to the Offshore Wind sector for transport of all basic type WTG foundations.

  • Turn Key installations
  • Feasibility studies
  • Concept design
  • Method statement
  • Marine engineering
  • Project management
  • Foundation handling of jackets, gravity bases and mono- piles
  • Heavy-lift supervision
  • Procurement
  • Asset chartering

Survey & Inspection
Our solutions vary from tailor-made client surveys to execution of surveys in accordance with international standards. Tristein’s survey team consist of highly skilled and motivated engineers and master mariners with comprehensive experience from classification societies, underwriters and engineering companies.

  • Insurance Hull & Machinery
  • Insurance Loss of Hire
  • P&I Co-insures cargo inspection
  • Project Specific Suitability Survey
  • Condition Suitability/Fit for purpose
  • Performance/crew evaluation
  • DP- FMEA/ Annual DP Trials
  • On-/Off Hire Surveys
  • CMID /OVID Inspections
Tristein AS
+47 95 14 30 00