Abstract: A method and system for cleaning an underwater floor is disclosed. The method includes: submerging a self-propelled underwater vehicle into a body of water, such as a basin, for example; directing the vehicle to traverse the basin floor; suctioning sediment particles from the basin floor as the vehicle traverses the floor; and providing a suction force to the vehicle. In one embodiment, the act of suctioning includes removing substantial amounts of particles smaller than a predetermined size from the floor while not removing substantial amounts of particles larger than the predetermined size from the floor. The system includes: the submersible, self-propelled vehicle for traversing the underwater floor; a first vacuum hood, coupled to the vehicle, for suctioning sediment particles from the underwater floor; and a first pump, coupled to the hood, for providing a suction force to the hood.

Abstract: A storage unit, in the category of a cabinet, bookcase, locker and cubby, as provided which includes a frame defining top, bottom, and side walls to the storage unit. At least one shelf member and at least one shelf supporting member are received in the frame to divide the frame into separate storage cubicles or lockers. The frame is made from two blanks. A first blank forms the top and at least a part of the sides. The second blank forms at least a part of the bottom and may form a part of the sides. Each blank, as well as the shelves and shelf supports, are made from a core having upper and lower surfaces which are covered with a coating. The coating extends beyond edges of the blanks to define a channel which receives a finishing piece. Grooves are formed in the top blank to define bending points and separate the what will be the top of the frame from the sides of the frame. Shallower grooves are formed in the first and second blanks and define one guide channels for the shelves and shelf supports.