Patent ID: 8286516

Claim:
A device for measuring the movement of a subsea deformable pipeline in relation to a seabed, said measuring device comprising an accommodating support anchored in said seabed to accept said subsea deformable pipeline, said subsea deformable pipeline being configured to move over a determined travel with respect to said accommodating support when said pipeline deforms, said movement having an amplitude that varies according to the deformation of said subsea pipeline; a plurality of frangible elements each secured to at least one of said subsea deformable pipeline and said accommodating support, said plurality of frangible elements extending in and being arrayed along a mean direction that is substantially parallel with said determined travel of said subsea pipeline; said frangible elements are configured, oriented and located to be broken in succession by the other of said at least one of said subsea deformable pipeline and said accommodating support when said pipeline is caused to move over said determined travel, such as to measure and indicate said amplitude of said movement as a function of a number of broken said frangible elements.