MODEC Unveils New FPSO Designs

The newly introduced MODEC NOAH (top) and M350 FPSO designs (Image: MODEC)
The newly introduced MODEC NOAH (top) and M350 FPSO designs (Image: MODEC)

Japanese floating production specialist MODEC has developed a pair of next generation new build hull designs for floating production, storage and offloading (FPSO) vessels developed in partnership with Mitsui E&S Shipbuilding, targeting greater production and storage capacity.

As a result of increases in required crude oil and gas production capacities, FPSO topsides have become bigger and heavier, which has led to insufficient deck space area and insufficient crude oil storage capacity on on converted very large crude carriers (VLCC), MODEC said. Additionally, MODEC said it sees durations of client contracts are increasing, thereby requiring longer FPSO design lives, and it expects that there will be a heightened demand for newbuild FPSO hulls.

In response to these market demands, MODEC joined forces with Mitsui to develop a next generation new built hull for FPSOs called the MODEC NOAH, based on a next generation hull design for FPSOs (called the noah-FPSO Hull, with "NOAH" standing for New Offshore Adapted Hull) that had already been developed by Mitsui E&S Shipbuilding. However, the MODEC NOAH is MODEC's own new hull design for FPSOs, and it was developed with the aim of achieving MODEC's top priority of maximizing the lifecycle value that each FPSO can provide to clients and other stakeholders through their whole lifetime, more than 20 years from the start until the end of operations. Furthermore, the MODEC NOAH has been developed to overcome challenges that have constituted technical limitations in oil tanker conversion FPSOs, the company said.

According to MODEC, key features of the MODEC NOAH are:

  • Adaptable to a wide range of shipyards around the world
  • Large deck area to cope with the trend toward larger, heavier and more complex topsides
  • Modular design concept, to accommodate a large variety of requirements for various FPSO projects, including various mooring configurations
  • Standardization of fore/aft modules and the parallel-body module with adjustable lengths which can be separately constructed at different shipyards, thus significantly expanding the options for construction locations, as well as scheduling flexibility based on dock availability
  • Strategic unique hull form consisting of flat or two-dimensional bending plates, which can reduce construction costs while maintaining seakeeping properties and minimizing green water and slamming loads impact
  • Adoption of a unique design of the hull which enables a machinery room volume, beneficial changes for the functionality of the piping, and an improvement in safety of the living quarters
  • Adoption of a hull form that allows the storage tanks to be continuously inspected during stable ongoing operations by providing sufficient inspection accesses
  • Work efficient layout for adequate maintenance activities required in the long-term operations
  • More comfortable living area for crewmembers

MODEC received Approval in Principle (AiP) for the design of MODEC NOA" from the American Bureau of Shipping (ABS) in March 2019, as well as from the Bureau Veritas (BV) and the DNV GL in May 2019.

MODEC has also developed a second next generation new built FPSO hull, the M350, which has received AiPs from ABS and DNV GL. The M350 has been jointly developed with Dalian Shipbuilding Industry Co., Ltd. (DSIC), a subsidiary of China Shipbuilding Industry Corporation (CSIC), with ultra-modern shipbuilding facilities and technologies, MODEC said.

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