NOVELTY - The plant has a cold water pipe (217) that is attached to the vessel. The cold water pipe is provided with an interface section with an engagement portion in contact with the vessel. A virtual hinge is extended from the engagement portion to a fixed interface. A middle section (217b) is engaged with fixed interface and suspended from the interface section. An intake section is suspended from the middle section.    USE - Ocean thermal energy conversion (OTEC) plant used for power generation.    ADVANTAGE - The cold water pipe assemblies can be used to create cold water pipes that can be attached to and detached from spar structures faster and easier. A cold water pipe to spar structure attachment interface which is easier to align and provide better sealing than certain conventional cold water pipes is provided. The plant reliability is comparable to commercial refrigeration systems, operating continuously for several years without significant maintenance. The increased net efficiency compared to traditional OTEC systems, and lower sacrificial electrical loads is achieved. A floating platform having integrated heat exchange compartments and provides for minimal movement of the platform due to wave action. The pressure loss in warm and cold water passages is reduced. The integrated floating platform can also provide for efficient flow of the warm water or cool water through the multi-stage heat exchanger, increasing efficiency and reducing the parasitic power demand. The energy extracted in the form of electricity reduces the bulk temperature to the ocean. Thus the offshore OTEC power plant has improved overall efficiencies with reduced parasitic loads, greater stability, lower construction and operating costs, and improved environmental footprint.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) a method of connecting submerged vertical pipe to floating structure;    (2) a submerged pipe connection assembly; and    (3) a method of forming cold water pipe for use in OTEC power plant.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of the cold water pipe divided into three sections.    Cold water pipe (217)    Upper section (217a)    Middle section (217b)    Lower section (217c)