Figure 1 depicts some offshore platform installations. These components included drilling/production marine risers, composite risers, mooring lines, and marine hoses. In addition, there are supporting attachments for these offshore installations that are used for a variety of functions and in a variety of water depths and environments globally. Hence, the facilities on the offshore structures require project management, asset/facilities management, and general maintenance. These offshore platforms can also be used for dynamic positioning, exploratory activities, drilling/production, navigation, ship (un)loading, fluid transport, and bridge support. Advances in ocean engineering are currently being undertaken, with a variety of new offshore structure designs spanning from fixed platforms to floating platforms. In the same vein, complex deep water assets such as Floating Production and Storage Offloading (FPSO), Mobile Offshore Production Unit (MOPU), Tension Leg Platform (TLP), and semi-submersible structures, are also examples of offshore structures. Fixed offshore structures, monopods, and guyed wire caissons are examples of offshore structures. However, the main categories include fixed and floating offshore structures. Although offshore wind farm facilities are renewable energy facilities, while Very Large Floating Structures (VLFS) could have offshore applications, they are sometimes classified as offshore structures. Oil and gas facilities include offshore structures and onshore structures, onshore oil tanks, as well as both downstream and upstream assets. Ultimately, for long-term operations, various types of offshore platforms for specific seawater depths are available. The review also includes information on cutting-edge offshore platforms and industry advancements. It also lists various software programs used in engineering designs covering software programs for structural analysis, 3D rendering, computer-aided design (CAD), hydrodynamic design, oceanic flow analysis, offshore structures analysis, mathematical modelling, coding/algorithm development software, and programming software to aid analytical calculations. Some discussions on the design parameters such as water depth and environmental conditions were presented. The ultimate goal is to provide a general overview of the many processes of offshore platform design, construction, loadout, transportation, and installation. Some historical developments of some offshore structures are presented, and some project planning routines are undertaken in this research. To achieve these, proper planning must be conducted for lifting, transportation, installation, design, fabrication, and commissioning of these offshore platforms. This paper is the second part, which outlines various processes, loads, design approaches and project management of offshore platforms. Different actions for suitable equipment selection, platform type design, and drilling/production processes are required for the applications of these offshore structures, as given in Part I. These structures are tailored for certain environments and sea depths. Offshore structures exist in a variety of forms, and they are used for a variety of functions in varied sea depths.
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