The paper discusses the construction of a dry dock in western Scotland designed for the fabrication of offshore concrete oil production platforms. The project involved the excavation of some 830 000 m3 of soft material and rock from a tidal inlet to a base level between 11 and 13 m below Chart Datum. The construction period was limited through the necessity to meet a climatic window for float out. The progress achieved and the organizational relationships of the project are described.
The site investigations prior to commencement of the site work were limited. These and the subsequent investigations carried out during the course of the works are described. The authors also discuss methods of construction, and show how certain aspects of these and the original designs were modified as the work proceeded.