Patent ID: 8641272

Claim:
A system for performing dilatometer tests on the seafloor comprising a unit able to rest on the seafloor, comprising: at least a pushing rod comprising at its lower end a dilatometer, and a driver device adapted to drive said pushing rod, and cause said dilatometer to penetrate into the seafloor and bring said dilatometer into a plurality of predetermined test depths, said driver device comprising: a clamping member adapted to clamp said pushing rod, and at least a pushing member for pushing down to said seafloor said clamping member when said clamping member is clamping said pushing rod, causing said rod and the dilatometer to penetrate into the seafloor, and for pushing up said clamping member when said clamping member is not clamping said pushing rod, wherein said pushing member moves up and down said clamping member and moves in an intermittent non continuous way said dilatometer between a predetermined test depth and the subsequent one, and wherein said pushing member is housed in a water proof element.