| 摘要 |
The invention relates to a vessel provided with tubular means descending from or beside the vessel, said tubular means being intended for depositing material therethrough on the underwater bottom surface. Driving means are provided near the bottom end of said tubular means, b y which the end of the tubular means is movable transversely to the longitudinal axis of the tubular means. Along at least most of its length the tubular means is built up of a number of shells arranged one above the other, whose upper sides and bottom sides are open, said shells slightly tapering off toward the bottom, whereby the upper end of a shell overlaps the bottom end of a shell located therebelow, while forming an open gap between said overlapping shell ends. Each shell is connected, by flexible connecting means, to the shell located directly therebelow.
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