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A method and apparatus for the water-based transfer of heavy loads. The invention is a lightweight apparatus is reconfigurable, and it includes a gantry arrangement mounted on beams or a platform and the apparatus is used to transfer heavy load items. The apparatus reconfigurable and may be used in

A method and apparatus for the water-based transfer of heavy loads. The invention is a lightweight apparatus is reconfigurable, and it includes a gantry arrangement mounted on beams or a platform and the apparatus is used to transfer heavy load items. The apparatus reconfigurable and may be used in a water-based loading environments in performing a variety of loading functions in situations involving one or more watercrafts and/or a pier or the like.

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1. A lightweight buoyant apparatus for transferring heavy loads, comprising: a floating platform arrangement comprising; a first end portion,a second end portion, anda removable middle portion between the first end portion and the second end portion, wherein each of the first end portion, the second

1. A lightweight buoyant apparatus for transferring heavy loads, comprising: a floating platform arrangement comprising; a first end portion,a second end portion, anda removable middle portion between the first end portion and the second end portion, wherein each of the first end portion, the second end portion, and the middle portion comprise a plurality of inflated tubes,a gantry comprising: a plurality of substantially U-shaped load transferring frames, each of the substantially U-shaped load transferring frames comprising; a first vertical strut on the first end portion,a second vertical strut supported on the second end portion, anda substantially U-shaped crossbeam extending from the first vertical strut to the second vertical strut, the substantially U-shaped crossbeam having a horizontal rail support section extending in an X-direction over the removable middle portion of the floating platform arrangement, anda rail for slidingly supporting a load, the rail extending in a Y-direction, perpendicular to said X-direction, the rail supported at a midpoint of each of the plurality of horizontal rail support sections. 2. The lightweight buoyant apparatus of claim 1, wherein in the floating platform arrangement, the first end portion comprises at least two elongated inflated tubes attached to each other with connectors, each of the at least two elongated inflated tubes extending in said Y-direction substantially perpendicular to said X-direction,the second end portion comprises at least two elongated inflated tubes attached to each other with connectors, each of the at least two elongated inflated tubes extending in said Y-direction substantially perpendicular to said X-direction, andthe removable middle portion comprises a plurality of elongated inflated tubes attached to each other with connectors, each of the plurality of elongated inflated tubes extending in said Y-direction substantially perpendicular to said X-direction. 3. The lightweight buoyant apparatus of claim 2, wherein in the floating platform arrangement, the at least two elongated inflated tubes of the first end portion have a length L in said Y-direction, the at least two elongated inflated tubes of the second end portion have a length L in said Y-direction, and the removable middle portion comprises first and second raft sections of substantially equal sizes, in a side-by-side symmetrical arrangement, wherein said plurality of elongated inflated tubes in each of the first and second raft sections have a length of about L/2 in said Y-direction, so that in said side-by-side symmetric arrangement, the first and second raft sections have a combined length of about L in said Y-direction. 4. The lightweight buoyant apparatus of claim 3, wherein the floating platform arrangement further comprises a plurality of modular grating sections positioned on the inflated tubes of each of the first end portion, the second end portion, and the middle portion of the floating platform arrangement. 5. The lightweight buoyant apparatus of claim 4, wherein the first end portion and the second end portion further include stiffened aluminum transition support extending vertically upwards between adjacent inflated tubes towards the grating sections. 6. The lightweight buoyant apparatus of claim 5, wherein the rail for slidingly supporting a load is a monorail, the lightweight buoyant apparatus further comprising a bracket with a hook for carrying the load, the bracket slidingly attached to the monorail, and an actuator for moving the bracket along the monorail back and forth in the Y-direction.