MARINE PIPELAYING SYSTEM AND METHOD FOR LOWERING AND/ OR RAISING AN OFFSHORE PIPELINE AND INCLUDING ONE OR MORE ACCESSORIES THERETO

摘要

A marine pipelaying system and method for lowering and/or raising an offshore pipeline and including one or more accessories thereto, includes a pipeline launch device, a pipeline clamp, an accessory connecting device and a controlled load hoisting device. An accessory handling device is provided including an accessory transport track and a cart adapted to engage and support one of the one or more accessories, such that the accessory handling device is adapted to engage said accessory at the engagement position, position the accessory in the pipeline connecting position in the firing line above the pipeline clamp. The accessory can be connected to the pipeline and support and allow displacement of the accessory between the engagement position and the pipeline connection position.