-
In 1990 the company opens a third office in Essen, Belgium, to oversee offshore personnel matters
-
Lorelay and Trenchsetter successfully complete the Mossgas project, offshore South Africa
-
Allseas becomes a global player with the award of the Santa Ynez project, offshore California, by Exxon Mobil; the project is Allseas' first in the USA and the first deepwater project, in 300 m (985 ft) water depth

- Improving oil prices and increased turnover lead to good profitability
-
Allseas Engineering moves from its four offices in The Hague in 1992 to new premises in Delft, the Netherlands, where it is possible for the Dutch part of the company to work under one roof
-
The company announces plans in August 1992 to build Solitaire, which when complete will become by far the largest pipelay vessel in the world
-
Repurchases the bulk carrier "Trentwood" and conversion to Solitaire gets underway at Sembawang Shipyards in Singapore
-
Allseas obtains ISO 9001 accreditation
-
The in-house designed automatic welding system Phoenix becomes operational and proves an instant success

-
In 1994 the company opens a new office in Houston, USA, in preparation for its first Gulf of Mexico contract; the Auger field development for Shell
-
E-mail is introduced throughout the company
-
During the course of 1994 various problems arise with the Solitaire conversion, hampering progress
