Abstract: An elongated, mobile apparatus for filling and depositing marine mattresses for use in erosion control. The apparatus comprises a frame system for supporting the apparatus on the ground and positioning for depositing an aggregate filled marine mattress at a desired location. The frame includes plural transverse support members fixedly mounting a like plurality of planarly aligned vertical support posts, where the vertical support posts includes a first forward facing wire mesh wall, and the support posts terminate in aligned free ends. Further included is a plurality of planarly aligned, second vertical support posts, where the second vertical posts are mounted for sliding engagement with the plural transverse support members. The second wall in a vertical orientation cooperates with the first wall to define an elongated space to receive a marine mattress container to be filled with aggregate, while in a horizontal orientation allows the filled container to be deposited on the ground.