Hybrid pipe for deep water, comprising a metallic rigid central part having
an upper end of which is connected to an upper portion of flexible pipe of
predetermined length and having a lower end of which is connected to a
lower portion of flexible pipe of a length at least equal of the length of
the upper portion of flexible pipe. The lower portion may have a
wave-shaped form to absorb motion. The wave is formed by buoyant members
on the lower flexible portion by an arch tethered to the sea bed on which
the wave-shaped portion rests.