Method and installation for carrying out operations under water

摘要

Method for carrying out operations under water by means of a crane (3) equipped with a tool which is erected on a pontoon (1) which has been fixed and which can be jacked up, characterized in that an underwater working room (4) which is mainly open at the bottom is let down on the place of work, in that the water is pushed out of this working room (4) by means of compressed air, an that the place of work is divided in compartments in the working room (4) itself, i.e. out of the water, and in that one or several positions of the compartment division in which the crane (3) will have to carry out an operation are transmitted to the crane (3), after which the underwater working room (4) is lifted and the crane carries (3) out the operation.