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Conversion FLNG Concept

Conversion FLNG Concept

Since executing its first FPSO vessel conversion in 1985, MODEC has executed a large variety of conversion of oil tankers into FPSOs and FSOs. Built up strong working relationships with the world’s major shipyards and fabricators, many of our converted vessels, such as the FPSO Kakap Natuna that started operation in 1986 offshore Indonesia, have been in service all over the globe.

EPC(I) Track Record (as of November 2017)


23 Conversion / 4 New Build

FSO 10

5 Conversion / 5 New Build

Extensive benchmarking data, knowledge and lessons learned that MODEC has been gaining by conversion projects of FPSOs and FSOs for offshore oil production, are applicable to the Conversion FLNG Concept.

[Key features]

  • A wide range of design options are available for the Conversion FLNG Concept:
    • LNG containment systems: Moss, Type B or Type C LNG Tanks
    • Donor vessels: Bulk currier, Oil tanker or LNG carrier
  • Availability of existing bulk carriers
  • Cost effectiveness
  • Early Delivery

ABS grants AiP for the MODEC Conversion FLNG Concept

American Bureau of Shipping (ABS) has given MODEC Approval in Principle (AiP) for the MODEC Conversion FLNG Concept.

[Design Condition]

  • Candidate Vessel; Double hull bulk carrier (200,000 to 300,000DWT)
  • Multiple Cargo Holds for LNG Storage (SPB tanks)
  • In addition some Cargo Holds can be dedicated to Condensate and/or LPG Storage
  • Wing Tanks are to be Slop tank and Pipe trunk
  • New Deck Plate and Longitudinals will be provided at Hatch openings and Cross Deck
  • MODEC LiBro® pre-cooling technology adopted

Specification of the MODEC Conversion FLNG Concept




Liquefaction Technology Air Products® AP-N LNG Process + MODEC LiBro®
LNG Production Capacity

2.0 MTPA

1.6 MTPA

Refrigerant Compressor Driver Gas TurbineĀ  (PGT25+G4)


LNG Storage Capacity

160,000 m3

LNG Offloading Side-by-Side or Tandem
Condensate Storage Capacity 20,000 m3
Condensate Offloading Tandem with Conventional Floating Hose String(s)
Hull Size 300mL x 50mW

* LiBro is a trademark of MODEC, Inc.