A vortex induced vibration suppressor and method is disclosed. The
apparatus includes a body that is a flexible member of a polymeric (eg.
polyurethane) construction. A plurality of helical vanes on the body
extend longitudinally along and helically about the body. A longitudinal
slot enables the body to be spread apart for placing the body upon a
riser, pipe or pipeline. Adhesive and/or bolted connections optionally
enable the body to be secured to the pipe, pipeline or riser.