SJELVGAENDE UNNDERVATTENSFORDON FOR UTFORANDE AV GREVNINGSARBETEN OCH SCHAKTNING AV JORD PA HAVSBOTTEN ELLER ETT LIKNANDE UNDERLAG

摘要

A self-powered submergence vehicle is provided with digging tools for entrenching previously laid pipelines on the like. Movement of the vehicle is controlled through the sensing of the position of the pipeline so that deviations in the movement of the vehicle relative to the pipeline are automatically compensated for.