Abstract: An embodiment of a method of assessing characteristics of a proposed offshore structure design includes: receiving input data from a user via a user interface, the input data including characteristics of a proposed design of an offshore structure; estimating, by a processor, a weight of the offshore structure and expected forces on the structure based on the input data; calculating allowable stresses and stability of the offshore structure based on the estimated weight and expected forces; estimating a cost of fabrication of the offshore structure based on the input data; estimating a cost of transportation and installation of the offshore structure based on the input data; calculating a total estimated cost of the offshore structure based on the cost of fabrication and the cost of transportation and assembly; and outputting the estimated weight, expected forces and total cost to the user via a display.

Abstract: A subsea facility for hydrocarbon recovery in deep waters and methods of installation are provided. More specifically, the subsea facility equipment is on multiple modules equipped with a buoyancy system to allow the modules to sink to the sea floor. The modules can be attached and unattached to each other, thus allowing for a module to be raised to the surface for repairs without affecting the rest of the subsea facility.

Abstract: A subsea facility for hydrocarbon recovery in deep waters and methods of installation are provided. More specifically, the subsea facility equipment is on multiple modules equipped with a buoyancy system to allow the modules to sink to the sea floor. The modules can be attached and unattached to each other, thus allowing for a module to be raised to the surface for repairs without affecting the rest of the subsea facility.