Abstract: The invention relates to a machine for performing work on land and/or in water, which comprises an underframe which moves on wheels or corresponding mechanism, a platform body on top of the underframe, and extension arm attached to the underframe which rotates in relation to the underframe and platform body and a work implement attached to the extension arm. A machine according to the invention has an extension arm which is a telescopic extension arm, to the end of which detachable work implements may be attached, a platfrom body which is attached to the underframe and can move along the longitude of the underframe, and a front edge on the platform body which is essentially open to enable loading and unloading.

Abstract: A dredger comprising a floating hull supported on floatable means, for instance on pontoons or the like, a transport basin movably supported at said hull for the reception of a mass lifted from the bottom and means for said movable support, said transport basin including a mainly open front portion and a rear portion, and means for the transfer of the mass from a dredged area into the transport basin. Said transport basin is operated by hoist devices so that at least said front portion of the basin is descendable down to the bottom for said mass reception and hoistable up to a transport position or to a position above said transport position, and said mass transfer means comprise a digger plate or the like, which is movable by means of powered members relative to and within said basin.