Abstract: A pipeline weight including: transversely opposing longitudinally extending sidewalls; a plurality of transverse walls transversely bridging the sidewalls and having respective upper and lower edges, wherein two of the transverse walls are longitudinally opposing end walls; and a floor spanning respective lower edges of the sidewalls and the end walls to form a compartment having an upper opening defined by respective upper edges of the sidewalls and the end walls, the floor defining at an underside thereof a longitudinally extending pipeline channel; wherein: the transverse walls are formed of a flexible material; and at least one of the transverse walls is a panel wall forming at least one panel sleeve having a sleeve opening proximal the upper edge of the panel wall.