Technical articles
Execution, schedules, and the discipline behind FPSO & FLNG delivery
Offshore project schedules and delays, EPC execution models, and risk and cost optimization strategies from people who have run these projects.
Before an FPSO or FLNG sails away, the actual lightship weight and center of gravity must be verified through an inclining test. These results form the basis for stability assessments, ballast strategies, transportation studies, and operational safety.
For floating production units, years of design changes, additional steel, piping modifications, and equipment installations can significantly affect the final weight distribution. The inclining test provides the confidence that the facility will perform as intended offshore.
🔧 Top 7 Errors During Testpack Preparation 🔍
In the fast-paced world of shipbuilding and construction, preparing piping testpacks accurately is critical to project success. Yet, recurring mistakes can lead to delays, rework, and compliance issues.
Read the article and confirm if you had similar issues in your experience. Let’s collaborate to improve!
#Shipbuilding #ConstructionManagement #TestpackPreparation #QualityControl #ProjectExecution #EngineeringExcellence #FPSO #FLNG #piping
ICCP vs SACP: Choosing the Right Corrosion Protection for Floaters
FPSOs and FLNGs operate for 20+ years without dry-docking, making hull corrosion protection a critical design decision. Two main approaches dominate offshore practice:
🔹 Impressed Current Cathodic Protection (ICCP)
🔹 Sacrificial Anode Cathodic Protection (SACP), Passive, fail-safe system using zinc/aluminum anodes.
🌊 Methanol FPSOs: From Oil Floaters to Floating Power‑to‑X
Methanol is moving fast from niche chemical to cornerstone of the energy transition. With shipping fleets going methanol‑ready and regulators tightening carbon rules, the real question is how we scale.
At Floaters Intelligentia, we see Methanol FPSOs (MFPSOs) as the bridge:
Blue MFPSOs monetize stranded gas with CCS, offering a pragmatic near‑term pathway.
Green (e‑)MFPSOs harness offshore wind, solar, and CO₂ capture to create true floating Power‑to‑X platforms.
This is a fundamental redesign of the FPSO: from oil separation trains to compact chemical reactors, modular distillation, and advanced methanol storage systems.
👉 Will methanol outpace ammonia as the first mover in offshore low‑carbon fuels?
#Methanol #FPSO #EnergyTransition #FloatersIntelligentsia #BlueMethanol #GreenMethanol #PowerToX #MarineFuels #Decarbonization #OffshoreEnergy #SustainableShipping
🚢💡 Can Ammonia FPSOs Compete Economically?
In Part 2 of our series at Floaters Intelligentia, we dive into the financial reality of ammonia FPSOs. While technically feasible, their economic viability depends on energy density, CAPEX intensity, and market conditions.
🔍 Key insights:
• Blue ammonia FPSOs: viable near CO₂ hubs with cheap gas
• Green ammonia FPSOs: power-price sensitive, policy-driven
#AmmoniaFPSO #FloatersIntelligentia #EnergyTransition #Decarbonization #OffshoreEnergy #FLNG #FPSO #GreenAmmonia #BlueAmmonia #CarbonCapture #ShippingFuel #CleanTech
🔍 Can floating ammonia production units truly reshape the offshore decarbonization landscape?
In the first article of our new series at Floaters Intelligentia, we explore the technical and energy fundamentals of Ammonia FPSOs—a concept gaining traction as a scalable solution for low-carbon fuel production at sea. A few insights:
A 1 MTPA ammonia FPSO delivers only ~0.6 GW of energy—just one-tenth of a 100,000 bbl/day oil FPSO.
Energy conversion efficiency for blue ammonia (56–66%) is significantly lower than LNG liquefaction (~95%).
Green ammonia FPSOs require gigawatt-scale offshore power, while blue ammonia units demand high thermal + electrical input—often exceeding onboard generation capacity.
🛠️ Industry leaders like Samsung Heavy Industries, MODEC, SBM Offshore, Yinson, and Wison New Energies are actively developing ammonia FPSO concepts, with ABS already granting several Approvals in Principle.
FLNG liquefaction has a hidden constraint: the MCHE.
The Main Cryogenic Heat Exchanger is the heart of an LNG train—conceptually like a refrigerator evaporator, but operating at −160 °C and at massive scale.
MCHE market and technology in a nutsheel:
▪️ The MCHE market is very small and highly specialized
▪️ Only a few suppliers worldwide can deliver offshore‑qualified units
▪️ MCHEs are long‑lead items (typically 30–36 months or more)
▪️ Damage to the cryogenic core can mean a multi‑year loss of capacity, as recent events in Qatar have shown
👉 As a result, the choice of liquefaction technology, and MCHE type, is one of the earliest and most strategic decisions in FLNG project development, locking in schedule, risk, and operability.
The industry is clearly splitting:
🔹 Baseload, high‑capacity FLNG → CWHEs (Honeywell, Linde)
🔹 Mid‑scale, modular FLNG → Plate‑fin & SMR concepts (Chart, B&V PRICO®)
Understanding the strengths and limits of each MCHE technology is no more optional, it’s an essential core competence.
Why “4‑Point Status” Should Drive Topside Planning
In modular FPSO and FLNG construction, a critical fact is often underestimated:
👉 A topside module does not behave as a rigid structure during deck stacking.
As decks are progressively installed, the structure remains statically indeterminate, its stiffness changes, and global deflections continue.
This directly affects equipment installation and piping erection.
Execution success is not about installing faster —
it’s about knowing when the structure stops moving.
If you work in EPC, shipyards, or topside integration, this principle can dramatically reduce rework and commissioning risk.
Everyone in LNG talks about process optimization — SMR, C3MR, DMR.
But in floating LNG, the true bottleneck isn’t thermodynamics.
It’s mechanical power.
Just like in Star Trek, shouting “Give me more power!” doesn’t change what the machinery can physically deliver. And for FLNG, the limit is very real: the driver defines the train.
🚢 FLNG Is Entering Its Modular Era — and One Liquefaction Technology Is Clearly Taking the Lead.
In our new article you can find a comprehensive review of LNG liquefaction cycles — SMR, C3MR, DMR, MFC, IPSMR® and N₂ expander systems — with a specific focus on their real‑world performance in FLNG applications.
🔍 The takeaway is unmistakable:
Single Mixed Refrigerant (SMR) technologies — PRICO® and IPSMR® — are now the dominant force in the global FLNG market.
Here are the numbers that define today’s landscape:
✅ 9 FLNG units in operation or construction use SMR (6 PRICO®, 3 IPSMR®)
✅ 3 units use DMR (Shell DMR or AP‑DMR)
⚙️ Only 2 units rely on other cycles (Shell MR, N₂ expander)
🚀 Robotic Welding Is Redefining Offshore Construction
Robotic welding isn’t about introducing new welding processes — it’s about industrializing what we already know works. FCAW, GMAW, autogenous and orbital welding remain the backbone, but robots deliver them with unmatched consistency, repeatability, and endurance.
Because they never rest, welding robots typically deliver a 5–10× increase in arc-on time, raising throughput while stabilizing schedule performance.
Robotics is reshaping shipyard work we know, to a safer, faster, more predictable ecosystem built on human expertise plus robotic precision.
The yards ready to embrace this shift will define the future of offshore construction.
Nuclear fusion is usually imagined as a massive land-based facility.
But what if the first commercial fusion plants were built… at sea?
The offshore industry has already demonstrated that extremely complex energy systems can be installed on floating structures — from FPSOs to floating LNG plants weighing hundreds of thousands of tons.
So a natural question emerges: Could fusion reactors also be deployed offshore?
In a new article on Floaters Intelligentia, we explore the conceptual feasibility of a 400 MWe floating fusion power barge.
High-pressure Small Bore Tubing in FPSO & FLNG Facilities
Application Context, Standards Alignment, and Execution Control
In floating production projects, welding piping remains the structural backbone of hydrocarbon processing, supporting by decades of engineering practice under frameworks such as ASME B31.3.
But small bore high-pressure tubing systems are not secondary of informal solutions.
When applied within its intended service envelope, tubing can add value:
· Eliminate field welding within its scope
· Reduce hot-work exposure offshore
· Improve installation flexibility during modular integration
· Support late-stage hook-ups and commissioning activities
In offshore projects, the real conversation is not tubing vs piping. It is selecting the right system for the right service and executing it correctly.
🔥 NEW on Floaters Intelligentia: GTT NEXT1 Changes the Game
GTT’s NEXT1 containment system—now approved by Bureau Veritas and Lloyd’s Register—delivers Mark III Flex+‑level thermal performance (~0.07% BOR) thanks to its dual‑metallic membrane and reinforced PU foam insulation.
Compared to the classic Mark III system used on major FLNGs, which operates around 0.15% BOR, NEXT1 cuts boil‑off nearly in half—a major gain for efficiency and offshore reliability.
In our new deep dive, we also explain why Mark III became more widespread than NO96, despite NO96’s robust metal‑metal design.
Gas Turbines: The Powerhorse Behind Every FloaterOn FPSOs and FLNGs, gas turbines aren’t just another piece of equipment—they’re the heart of the operation. Even as dual-fuel diesel generators appear on new designs, large compressors for LNG refrigeration and export remain turbine-driven.But here’s the catch:Choosing between SAC (Single Annular Combustor) and DLE (Dry Low Emissions) at project kickoff can shape your entire execution strategy. It impacts: ✅ Emissions compliance✅ Commissioning duration✅ Time-to-marketKey insight:SAC = fastest commissioning (months ahead of DLE), ideal when emissions rules are minimal.DLE = built-in low NOx, but adds complexity and tuning time.SAC + SCR = strict compliance, but longest schedule hit.📊 Decision Matrix:(Emissions vs Speed to Market)Why it matters:With tightening EU/UK/US/Norway regulations, DLE or SCR may be unavoidable—but if your project’s priority is first gas fast, SAC can still win the race.👉 Read the full analysis on Floaters Intelligentia at link below
Living Quarters: More Than Just Comfort on FPSO & FLNG Units
At first glance, the Living Quarters (LQ) might look like the fancy part of an offshore vessel—a place with cabins, lounges, and a helideck on top. But the reality is very different.
✅ LQ is the lifeline of offshore operations.
It’s where safety meets engineering complexity:
Fire-rated and blast-protected structures
Redundant HVAC systems with positive pressurization
Integrated telecom hubs and emergency control points
Helideck designed to CAP437 standards
Whether part of a new build or an FPSO refurbishment, LQ design is about more than a canteen and a gym. It’s about creating a haven that allows offshore teams to rest, recover, and maintain a healthy mindset in one of the harshest environments on Earth.
Key Takeaway:
Living Quarters are not just accommodation—they are the strategic heart of offshore energy projects.
📌 Read the full article on Floaters Intelligentia
🚢 Cybersecurity in Offshore Floating Units: Why It’s Non-Negotiable for FPSO & FLNG Projects 🔐
Digitalization has transformed FPSO and FLNG assets into highly connected systems—bringing efficiency and new vulnerabilities. A single cyber incident can disrupt commissioning, compromise safety, and cascade across yards and offshore operations.
What’s changing? ✅ IMO MSC.428(98) and IACS UR E26/E27 now make cyber resilience mandatory for new builds.
✅ Bureau Veritas, ABS, and DNV lead with dedicated guidelines (BV NR 659, ABS CyberSafety™, DNV RP-G108).
✅ Other societies rely on IMO/IACS standards—owners seeking structured compliance should know the difference.
Key Takeaways from Our Latest Article: 🔹 Embed cybersecurity from FEED to operations—zone segmentation, DMZs, SIS isolation.
🔹 Demand vendor assurance: BV Type Approval, ABS/DNV hardening checklists.
🔹 Continuous monitoring, drills, and OT-aware patching are essential for resilience.
🔹 Compliance is not just a checkbox—it’s a competitive advantage for safer startups and fewer unplanned shutdowns.
compliance strategy combining BV, ABS, and DNV best practices.
This article dives deep into the differences between upstream-integrated FLNG and midstream-only FLNG, explaining why this distinction matters for engineering complexity, risk, and commercial models.
Why does this matter?
✔ Flexibility & Speed: Offshore liquefaction reduces infrastructure bottlenecks.
✔ Midstream Advantage: Tolling models make FLNG attractive for producers with strong pipeline networks—think USA, Canada, Qatar.
✔ Mega Projects:
Delfin Midstream & Samsung Heavy Industries signed a landmark fabrication agreement for modular FLNG units in the Gulf of Mexico (up to 13.2 MTPA).
AMIGO LNG & Dubai Drydocks World will deliver the world’s largest midstream-only FLNG facility off Mexico’s west coast (4.2 MTPA), reinforcing the scale and ambition of this segment.
FLNG isn’t just part of the LNG value chain—it’s shaping its future.
Read the full analysis below
#FLNG #LNG #EnergyTransition #OffshoreGas #Midstream #OilAndGas #FloatingLNG #EnergyMarkets #CleanEnergy #FutureOfEnergy
🔗 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.
🚢 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.
🔌 Rethinking Power Generation on FPSOs & FLNGs
As the offshore industry evolves, so must the way we generate power.
Traditionally, gas turbines have been the default for FPSOs and FLNGs. But with the rise of newbuild barge-shaped hulls and the push for lower emissions, new options are emerging.
⚙️ Why Dual-Fuel Generators?
• Higher efficiency
• Faster load response
• Fuel flexibility (LNG, diesel, biofuels)
• Shorter lead times
• Lower emissions potential
These systems are modular, easier to maintain, and better suited for dynamic offshore operations.
⚡ Electrification from Shore
Projects like Goliat FPSO, Johan Castberg, and Cedar LNG are proving that power-from-shore is not only possible—but powerful.
✅ Zero emissions at point of use
✅ Reduced noise and maintenance
⚠️ Infrastructure cost and grid access remain key challenges
🔮 Looking Ahead
The future of offshore power may lie in hybrid strategies:
• Modular onboard generation
• Clean shore-based electricity
• Alternative fuels
• Smart power management
• Carbon capture integration
💬 Final Thought
There’s no one-size-fits-all solution. Each project has unique constraints and opportunities. As we move toward a lower-carbon future, what mix of technologies do you think offers the best balance of efficiency, resilience, and sustainability?
Let’s discuss. 👇
🚢 AI Is Coming Aboard: The Future of Offshore Floaters Is IntelligentAs FPSOs, FLNGs, and FSRUs become more complex and crew sizes shrink, Artificial Intelligence (AI) is emerging as a critical enabler for safe, efficient, and autonomous offshore operations.But deploying AI offshore isn’t plug-and-play. It comes with real challenges: ⚠️ Data scarcity and fragmentation⚠️ Accountability in safety-critical decisions⚠️ Cybersecurity risks⚠️ Legacy system integration⚠️ Cultural and organizational readinessDespite these hurdles, leading contractors are already making bold moves:🔹 Technip Energies is deploying AI-powered digital twins, predictive maintenance, and robotic systems for unmanned operations.🔹 Wison New Energiesis co-developing AI-enabled FLNGs with SUPCON for autonomous, low-carbon performance.🔹 Saipem and AVEVA are building AI-enhanced engineering tools for smarter, faster project delivery.🔹 SBM Offshore and Microsoft are launching AI-enabled floating gas power units with real-time carbon monitoring.🔹 MODEC has spun off a new software company to develop AI platforms for FPSO optimization and remote operations.📊 According to DNV, the AI market in oil & gas is set to grow from $3B in 2024 to $5.2B by 2029. Yet only 15% of operators use AI in live operations today.The opportunity is massive. The transformation is underway.💬 Are you working on AI in offshore or energy transition projects? Let’s connect—I’d love to hear your perspective.
FLNG 101: Bringing the LNG Plant Offshore
While more than 300 FPSOs have been deployed worldwide, the FLNG industry remains much younger, with only around 15 facilities currently in operation or under construction.
In this latest Floaters Intelligentia article, we will introduce the key process systems that transform natural gas into LNG onboard an FLNG, from gas pre-treatment through liquefaction, storage and export.
At its core, an FLNG is arguably the world's largest floating refrigeration plant.
#FLNG #LNG #FPSO #OffshoreEngineering #Energy