Marine fall pipe system providing an intermediate opening, and marine vessel comprising such fall pipe system.

摘要

A marine fall pipe system (100) is constructed for placing blocks of stone and/or rock (R) on a seabed (SB) and configured for suspension from a marine vessel (10). The fall pipe system comprises a substantially tubular fall pipe (100) having an open end for discharging the blocks of rock and/or stone, and the fall pipe system comprises an opening arrangement constructed such as to allow opening the substantially tubular fall pipe to provide an intermediate opening (170) at a position along its length for discharging the blocks of stone and/or rock at said position from the fall pipe. The fall pipe may be locally discontinued by releasing one or more fall pipe segments (110) of the fall pipe, may comprises fall pipe segments with weakened parts where they will break, or a fall pipe segment may be movable sidewards to provide the intermediate opening.