Improvements bringest to the flat - shapes of the type off -, in particular to the extreme shapes flat -

摘要

The invention relates to platforms of the off-shore type. It consists principally in arranging the base of the platform in the form of an elongated reservoir able to float and of a sufficient length to serve as a support for a column during transport to the anchoring point. For positioning the reservoir-base on the sea-bed, the reservoir is first of all tilted under the effect of ballasting until one of the ends of the reservoir touches the sea-bed. Then the column is released to assume its vertical position by way of floats connected thereto; and the operation is completed by ballasting to bring the reservoir-base to a horizontal position on the sea-bed.