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General enquiries
Tel. +45 7916 6666


Semco Maritime
Esbjerg Brygge 30
DK- 6700 Esbjerg

Oil & Gas


Our multi-disciplined engineering teams encompass all disciplines.

Engineering is at our core

In-house competences

We perform innovative concept studies and designs for both onshore and offshore within a wide variety of standards to your exact need.  

Our skilled engineers provide high quality solutions that are in line with the newest rules and regulations. We keep up with new trends and standards to make sure that you will not have to update an installed product in the near future.  

We provide full scale engineering involvement from receiving requirement, over reviewing specifications and guidelines from customers to the final customer approval.  

Successful project completion involves key stakeholders, long term forecasting, reporting optimization of the schedule and creating one single project plan. Efficient  project management reduces costs without compromising safety and quality.

A core competence for 40 years

Electrical and instrumentation engineering:

  • Short circuit calculation
  • Selectivity study
  • Load balance and short circuit calculations
  • Key diagrams
  • Single line diagrams
  • Loop diagrams
  • Inter connection diagrams
  • Electrical and instrument layouts
  • I.S. calculations
  • Power management and systems
  • Green Energy solutions
  • Electrical and Instrumentation drawing design reviews
  • Hazardous (Ex) areas
  • Condition control and measuring
  • Remote surveillance equipment
  • Power distribution systems
  • Light study, both for emergency and normal light
  • Power saving analysis
  • Generator SCR analysis
  • High voltage switchboards
  • Heat Radiation Study
  • Rig interface
Dedicated specialists


  • Concept studies
  • Detail design
  • Verification of existing structures
  • Surveys
  • Installation manuals and methods
  • Fabrication sparring
  • Handling guides and methods
  • Design risk assessment  
  • 3D scanning
Customised solutions


  • Mechanical/Structural deliverables and reports
  • Structural analysis
  • Steel constructions
  • Bespoke platforms for all applications
  • Pipe Spools
  • Pipe flow and pressure calculation
  • Bespoke Modules and Accommodation units
  • Modal analyses
  • Skids
  • Static analyses
  • Dynamic analyses
  • Fatigue analyses
  • Buckling
  • Wellhead control panels
  • Dropped object” analyses
  • Crane calculations
  • 2D/3D design in SolidWorks, Inventor and AutoCad
  • Documentation requirements
  • Pipe flow and pressure calculation
  • Sea fastening, lashing and transport calculation
  • Load balance and sea motion analysis
  • Lifting design and procedures
  • Skid solutions
End-to-end solutions


We deliver end-to-end solutions, which combines design and engineering of Instrumentation systems with interfaces to all required systems including firefighting, HVAC, ESD, Telecom and SCADA systems.

Our engineering projects are completed in accordance with ATEX directive, Norsok, NFPA, IMO, DNV, GL, ABS, BV, IEC and others. Semco Maritime work in close cooperation with the client ensuring tailor made solutions, which satisfy customer needs.

Specification and design of field or panel instrumentation are done in accordance with eg. SIL and ATEX – whether for wind farms, petrochemical or power plants.

40 years on in-house experience


Our in-house telecom specialists design your solution based on factors such as the capacity, functionality, distance and physical environment at site in question.

We supply a broad range of transmission and data communication solutions, and we always integrate our systems into packages that are easy to use, simple to service and inexpensive to maintain.

EPCI: We supply everything from conceptual studies, design and procurement to construction and installation


With highly qualified engineers and designers, our multi-disciplined engineering teams encompass process, mechanical and electrical systems, structure, piping, instrumentation, control, survey, 3D scanning and documentation.


Our dedicated procurement team works as an integral part of the project. Our aim is to ensure that, regardless of the size or type of project, the materials, products and services are available from the right suppliers at the right time, to meet your technical, quality and budget requirements. 


Quality is assured by our own production planning and control system - and thanks to our in-house engineering and fabrication capabilities, cooperation between engineers and production personnel is seamless. And, with all this expertise under one roof, we can provide an increased degree of flexibility, moving resources where they’re needed most – fast. Lear more

Installation and comissioning

We will ensure that the team has experienced engineers who can test the interfaces towards the existing platform systems, and resolve any issues by use of combined practical and analytical skills. In the commissioning phase we assure that all systems and components are designed, installed, tested, operated and maintained according to your requirements. Learn more

Multi-discipline projects

Working together to find the best solutions

Our multi-discipline teams give our customers the best solution possible. We understand system interfaces and make sure that everything is integrated perfectly. At the same time our people in the field benefit from a back-office of all types of engineers ready to support them with specialist knowledge.