Patent ID: 7509919
Filing Date: 2009-03-31
Classification: B63B

Abstract:
1. An installation vessel which includes a hull with a periphery formed by bow and stern ends and port and starboard sides, wherein said vessel has an upper working deck with a flat working surface area of at least one hundred meters 2 , wherein: said vessel has a lower working deck with a flat working surface area of at least one hundred meters said bow and stern ends form longitudinally spaced vessel front and rear ends, said vessel has a middle lying halfway between said vessel front and rear ends, and said vessel has a rear half extending longitudinally from said middle to the rear end of the vessel; said upper deck extends rearward of said vessel middle by a length that is a majority of the length of the rear half of the vessel, and said open lower deck portion extends at least 10 meters rearward of said upper deck rear end.