Abstract: The disclosure provides an efficient system to obtain a pile from a storage location on a vessel and shift the pile across the vessel without significant rotation of the pile. The pile can be transferred into an assembly that can lower the pile and launch the pile. The disclosure provides a method of translating and launching a pile for a marine application, comprising: storing at least a first pile on a rack located on a vessel; transporting the pile to an installation site; lifting the pile from the rack with a cart; supporting the pile on the cart; shifting the cart and the pile to a launch arm assembly; transferring the pile from the cart to a first portion of the launch arm assembly adjacent a side of the vessel; lowering the first portion with the pile; and releasing the pile from the first portion into a marine environment.

Abstract: The disclosure provides an efficient system to obtain a pile from a storage location on a vessel and shift the pile across the vessel without significant rotation of the pile. The pile can be transferred into an assembly that can lower the pile and launch the pile. The disclosure provides a method of translating and launching a pile for a marine application, comprising: storing at least a first pile on a rack located on a vessel; transporting the pile to an installation site; lifting the pile from the rack with a cart; supporting the pile on the cart; shifting the cart and the pile to a launch arm assembly; transferring the pile from the cart to a first portion of the launch arm assembly adjacent a side of the vessel; lowering the first portion with the pile; and releasing the pile from the first portion into a marine environment.

Abstract: A leg mating system for aligning a pre-constructed deck portion with a previously situated base portion of an offshore platform. The deck portion is supported upon a barge and brought into position above the base. A plurality of stabbing pins are hydraulically extended from the legs of the deck portion and are received in capture members in the legs of the base portion. A first spring having a first spring rate and a second spring having a second spring rate higher than the first, are operative in that order to resiliently oppose reduction of the separation between the deck and base portions with a spring rate which increases as the separation decreases. The capture members are capable of accommodating axial misalignment between the legs of the deck and base portions of up to five degrees.