A support able to be installed at sea, in grounded or floating manner (1-2, 1-1), said support being fitted on its surface with a storage and guide device for storing and guiding flexible pipes (3, 3a-3b-3c) and suitable for storing and guiding a plurality of said flexible pipes, and preferably at least three of them, the support, the storage and guide device comprising: • a first carrier structure resting on or secured to the deck of said support close to a side of said support, said first carrier structure supporting a plurality of circular turntables arranged one above another; • each of said turntables (4-1, 4a, 4b, 4c) being suitable for being driven in rotation in powered manner by a first motor about a vertical central axis ZZ' independently of one another, preferably about the same vertical central axis ZZ', each turntable having a central orifice surmounted by a central cylinder against and around which a said flexible pipe (3, 3a, 3b, 3c) can be wound in concentric juxtaposed spiral turns of increasing diameter resting on the top face of said turntable, said central orifice of said turntable being fitted with a rotary joint coupling suitable for providing coupling between firstly a first end that is closest to said central cylinder of a flexible pipe wound around said flexible cylinder, said first pipe end being suitable for being driven in rotation together with said turntable, and secondly an end of a stationary transfer pipe having its other end in communication with at least one first tank within said support; and • a plurality of guide means (10, 10a, 10b, 10c), each said guide means being suitable for guiding the portion of said pipe leaving a respective one of each of said turntables in continuity with the portion of pipe wound on said turntable, in such a manner that the various said pipe portions leaving the various turntables are arranged in straight lines, being offset in different positions along a horizontal direction Y 1 Y' 1 parallel to said side, at different heights, and capable of adopting different orientations (α1, α2, α3) for their vertical axial planes (P1, P2, P3) relative to said horizontal direction Y 1 Y 1 ' parallel to said side. • a first carrier structure resting on or secured to the deck of said support close to a side of said support, said first carrier structure supporting a plurality of circular turntables arranged one above another; • each of said turntables (4-1, 4a, 4b, 4c) being suitable for being driven in rotation in powered manner by a first motor about a vertical central axis ZZ' independently of one another, preferably about the same vertical central axis ZZ', each turntable having a central orifice surmounted by a central cylinder against and around which a said flexible pipe (3, 3a, 3b, 3c) can be wound in concentric juxtaposed spiral turns of increasing diameter resting on the top face of said turntable, said central orifice of said turntable being fitted with a rotary joint coupling suitable for providing coupling between firstly a first end that is closest to said central cylinder of a flexible pipe wound around said flexible cylinder, said first pipe end being suitable for being driven in rotation together with said turntable, and secondly an end of a stationary transfer pipe having its other end in communication with at least one first tank within said support; and • a plurality of guide means (10, 10a, 10b, 10c), each said guide means being suitable for guiding the portion of said pipe leaving a respective one of each of said turntables in continuity with the portion of pipe wound on said turntable, in such a manner that the various said pipe portions leaving the various turntables are arranged in straight lines, being offset in different positions along a horizontal direction Y 1 Y' 1 parallel to said side, at different heights, and capable of adopting different orientations (α1, α2, α3) for their vertical axial planes (P1, P2, P3) relative to said horizontal direction Y 1 Y 1 ' parallel to said side.