Company History


Dr.-Ing. Wolf-Dieter Longrée and Dipl.-Ing. Joachim Berger founded IMPaC Offshore Engineering GmbH in Hamburg


Schwedeneck (Baltic Sea): Transport and installation design and supervision for the first offshore oilfield in the German Baltic


Subsea storage tank: A project supported by the Federal Ministry for Economic Affairs and Energy that led to the development of a subsea storage tank for oil products suitable for operation in shallow waters.


Mittelplate (North Sea): Innovative design for heavy duty installation in very shallow water conditions (tidal flats)


Lagos (Nigeria): Comprehensive project management for construction of Escravos Gas Pipeline


Hazira (Indien): First offshore ethylene lighterage / concept (ship-to-ship lighterage with flexible hoses), design and project management


North Germany: IMPaC commences with the development and design for more than 30 gas fields in northern Germany spread over two decades


Europipe (North Sea): IMPaC designs the first float-in method for tunnel pipeline installation / crossing the Wadden Sea natural conservation area

since 1996

IMPaC becomes a sought-after designer and consultant for onshore and offshore gas field developments, e.g.

- As Sarah, Libya

- Kuzey Marmara, Turkey

- Chergui, Tunesia

- Bonny, Nigeria


Establishment of IMPaC’s subsidiary IMPaC Oil & Gas Engineering Ltd. In Port Harcourt, Nigeria

Caspian Sea: Development of the world’s largest posted barge for drilling operations in ice covered shallow water

since 1998

IMPaC engages more deeply into applied Research and Development. Examples of successful projects are:

- ice drift resistant offshore underwater structures





Development of super large cooling water utilities for Mobin industrial complex


IMPaC is prime contractor for Mossel Bay offshore pipeline repair project


Okoloma Gas Plant, part of the Afam Gas to Power Project (Nigeria):
The largest project in IMPaC history so far Project value about 750 Mio EUR E&P and attendance on Construction carried out for Shell Nigeria.


Establishment of a Joint Venture with Dolphin Offshore Enterprises Limited in India


Baltic Sea: IMPaC contributes significantly to the Nord Stream Pipeline Project – one of the world’s largest offshore gas pipelines - from the early stages of the project including Authority Engineering and permitting support services up to the commissioning of the two pipelines.


Upgrade of an offshore oil & gas production system and development of new reservoirs in the Black Sea. A fast track project to which IMPaC provided over 150,000 engineering hours.


Foundation of the Employees Shareholding Company IMBG


The design of two met masts for the offshore wind farms Nordsee Ost and Ijmuiden brings a new momentum to IMPaC’s business in the offshore wind sector


Offshore Wind: IMPaC prepares a number of studies, concepts and designs for offshore HVDC converter platforms for projects such as: DolWin gamma, BorWin alpha, BorWin beta, HelWin alpha, HelWin beta and SylWin alpha


Design of the first Accommodation Platform for the offshore wind industry: Vattenfall’s DanTysk wind farm in the German North Sea


Sale of IMPaC's Nigerian subsidiary


Oil & Gas:  Comprehensive integrity study, Basic design & detailed FEED for an onshore oil field development in Libya including gas utilization, power supply, oil stabilization, and waste water treatment as well as the development of a new station for Mellitah Oil & Gas B.V.

2014-to date

IMPaC creates a number of highly innovative conceptual designs for different foundation structures with the aim of further driving down LCOE (Levelized Cost of Energy)


Transfer of majority shareholding from Dr.-Ing. Wolf-Dieter Longrée to Inka Longrée and Mark Longrée. New Members in IMBG are appointed.


Installation of the Offshore Accomodation Platform 'Dan Tysk' in the North Sea. A Milestone for the (German) Offshore Wind Industry has been reached with this first of its kind Platform.