🔗 Mooring System Evolution in FPSO and FLNG Units (2015–2025)

Over the past decade, the offshore industry has witnessed a clear divergence in mooring strategies between FPSOs and FLNGs:

⚓ FPSOs are increasingly adopting spread mooring systems, driven by cost efficiency, design simplicity, and operational flexibility.

🌀 FLNGs, on the other hand, continue to rely on turret and yoke-based systems to meet the stringent requirements of cryogenic LNG transfer in side-by-side offloading configurations.

📌 This article explores:

The operational implications of heading control

Key differences between internal/external turrets, SYMS, and SSYMS

Real-world examples: PFLNG SATU, Coral Sul FLNG, Golar Hilli

👉 A valuable read for professionals involved in complex offshore developments, where mooring system selection directly impacts safety, efficiency, and project economics.

📄 Interested in the full article? Let’s connect or drop a comment below!

Floaters Intelligentia

#FLNG #FPSO #MooringSystems #OffshoreEngineering #HeadingControl #Petronas #EnergyTransition #CryogenicTransfer #FloatingProduction

‍🚢 LNG Containment Systems in FLNG: GTT vs SPB vs MOSS (UPDATED FEBRUARY 2026)

As FLNG projects scale globally, the choice of LNG containment technology has become one of the most strategic decisions in project design, EPC execution, and lifecycle performance.

Floaters Intelligentia has just published a fully updated comparison of the three dominant tank technologies used in FLNG units:
🔹 GTT Mark III membrane systems
🔹 SPB (Self‑Supporting Prismatic Type B)
🔹 MOSS spherical tanks

The article examines how each technology impacts:
✅ Construction sequence & yard strategy
✅ Thermal and structural performance
✅ Sloshing resistance and operational envelope
✅ CAPEX, schedule risk, and maintainability
✅ Suitability for newbuild vs conversion FLNG units

Key insights:
✨ GTT membrane systems remain the benchmark for newbuild FLNG thanks to high shape efficiency and parallelized installation (hull completion followed by in‑hold panel installation), supported by a mature global yard ecosystem.
✨ SPB tanks—pioneered by IHI and now featured on Wison’s Nguya FLNG for Eni—demonstrate fast‑track potential at the module level when tanks are fabricated off‑hull and integrated as a package. However, SPB installation sits on the dry‑dock critical path and requires heavy lifts, so the overall schedule advantage depends on yard capability and execution readiness.
✨ MOSS tanks continue to play a vital role in FLNG conversions (e.g., Gimi), offering outstanding sloshing resistance but lower volumetric efficiency, which makes them less common in newbuild FLNG.

This updated piece includes:
📌 A revised technical comparison table
📌 A detailed construction & integration section
📌 Thermal management analysis (cofferdams vs void systems)
📌 A full set of APA‑formatted references
📌 Updated field examples from Prelude, Coral Sul, Coral Norte, PFLNGs, GTA Gimi, Nguya, and Genting FLNG

🔍 If you work in FLNG development, EPC execution, naval architecture, or LNG operations, you’ll find practical insights drawn directly from real projects and shipyard practices.

👉Read the full article below: