an apparatus for installation and protection of subsea cables comprises at least a first tubular member and at least a second tubular member . both these are arranged to be installed subsea with a subsea foundation . this allows passage of cable through it . the first tubular member is arranged telescopically within the second tubular member so as to extract outwardly towards seabed from an end portion , with respect to the second tubular member , only up to a prefixed length . this ensures that a continuous conduit for the cable is obtained through the scour protection of the foundation . the present invention also includes a methodology for installation of the apparatus and a method for installing a cable through the scour protection of the foundation , by using the apparatus .