The short version.

• T4S stands for "Technical Standards and Specifications including Safety Standards" — a real, official PNGRB (Petroleum and Natural Gas Regulatory Board) regulatory category, not shorthand or a typo. The LNG-specific T4S regulation (document code INFRA/T4S/LNG/05, covering terminal layout, seismic design, jetties, unloading/loading lines and re-gasification) was last amended on 23 July 2025.
• Separately, and more consequentially, PNGRB notified the Registration for Establishing and Operating Liquefied Natural Gas (LNG) Terminals) Regulations, 2025 on 8 May 2025, effective the next day. It made prior registration mandatory for new or expanding LNG import terminals — but it also dropped an earlier requirement that terminals reserve import capacity for third-party shippers on a common-carrier basis, a real deregulatory move alongside the added registration step.
• A genuinely new terminal technology is moving through that registration process right now: Crown LNG's Kakinada terminal (via its Indian entity, Krishna Godavari LNG Terminal Pvt Ltd, KGLNG), roughly 11 km offshore Andhra Pradesh with a planned ~7.2 million-tonnes-a-year capacity, is being built on a Gravity-Based Structure (GBS) — a large concrete or steel platform towed to site empty and then deliberately flooded so it sinks and sits permanently on the seabed — rather than a moored floating vessel. It's reported as India's first, and possibly the world's second, GBS LNG import terminal, and its main selling point over a floating FSRU is year-round operation through rough monsoon seas.
• One claim this piece checked and could not confirm: that PNGRB has formally reclassified Gravity-Based Structures under the same regulatory definition as FPSOs (Floating Production Storage and Offloading vessels). No PNGRB press release, regulation text, or trade-press coverage found for this piece states that. What's actually documented is PNGRB processing the Kakinada GBS terminal's registration on its own technical merits, not a general rule change redefining what a GBS counts as. This piece reports that absence directly rather than repeating an unconfirmed reclassification as fact.
• Separately again, two competing (not partnered) companies sell technology to skip the fixed jetty a conventional LNG terminal needs entirely: Norway's Econnect Energy, with its Universal Transfer System/IQuay floating cryogenic-hose platform (deployed for New Fortress Energy in 2024, Wilhelmshaven II in Germany in 2025, and a Shell-backed project in the Bahamas announced August 2026), and Sweden's Stena Power & LNG Solutions (a distinct Stena Group unit from the shipping business), whose Jettyless Floating Terminal design has Approval in Principle from Bureau Veritas and DNV for a Vietnamese project. Neither has a confirmed India deployment as of this piece's research, and the two are market rivals, not collaborators, despite sometimes being mentioned in the same breath.

What T4S actually is, and what changed in it

T4S is PNGRB's own name for one of its core regulatory categories: "Technical Standards and Specifications including Safety Standards," a family of engineering rulebooks covering everything from city-gas-distribution networks to natural-gas pipelines to petroleum retail outlets, each with its own sub-regulation. The LNG-specific one, catalogued under section D.4 of PNGRB's regulation index, sets the actual engineering bar for an Indian LNG import terminal: layout and seismic design, jetty specifications, unloading and loading line design, and the re-gasification equipment (pumping and vaporization systems) that turns imported liquid LNG back into pipeline-ready gas. Its most recent post-amendment version, document code INFRA/T4S/LNG/05, is dated 23 July 2025, following an earlier amendment from February 2023. Among its provisions, the regulation requires a Quantitative Risk Analysis (QRA), with Board approval, wherever a terminal's design departs from the baseline standard — the mechanism that in principle lets PNGRB evaluate something genuinely novel, like a GBS-based terminal, against a documented risk case rather than forcing it into an ill-fitting existing category.

A separate, arguably more consequential regulatory change landed a few months earlier. On 8 May 2025, PNGRB notified the Registration for Establishing and Operating Liquefied Natural Gas (LNG) Terminals) Regulations, 2025, effective the following day, making formal registration a mandatory prerequisite for building or expanding an LNG import terminal in India. In the same regulation, PNGRB dropped an earlier rule that had required terminal operators to reserve a share of import capacity for third-party shippers on a common-carrier basis — a real loosening of open-access obligations bundled together with a new registration requirement, not a straightforward tightening or loosening in one direction.

T4S's meaning ("Technical Standards and Specifications including Safety Standards"), its LNG-specific sub-regulation (document D.4, code INFRA/T4S/LNG/05), its 23 July 2025 amendment date, and its Quantitative Risk Analysis provision are drawn directly from PNGRB's own published regulation index and PDF text (pngrb.gov.in). The 8 May 2025 LNG Terminal Registration Regulations, its effective date, the new mandatory-registration requirement, and the dropped third-party-access/common-carrier capacity-reservation rule are corroborated across Business Standard, Deccan Herald, and Legalitysimplified's coverage of the notification.

A concrete platform instead of a ship: Kakinada's GBS terminal

Every LNG import terminal built in India to date has relied on either an onshore tank-and-jetty complex or a moored floating vessel — an FSRU (Floating Storage and Regasification Unit) — that stays permanently on station but is still, structurally, a ship. A Gravity-Based Structure is a different category of asset entirely: a large concrete (sometimes steel) platform, built with an internal ballast section, towed out to its offshore site while still buoyant and empty, then deliberately flooded so it sinks under its own weight and sits permanently on the seabed — no mooring lines, no risk of drifting off station, and no vessel-scale maintenance dry-docking cycle to plan around. The practical selling point over an FSRU is weather resilience: a GBS can keep operating through sea conditions — rough monsoon swells, for instance — that would force a floating FSRU to reduce throughput or suspend operations.

India's first real example is under construction now. Crown LNG's Kakinada terminal, developed through its Indian entity Krishna Godavari LNG Terminal Pvt Ltd (KGLNG), sits roughly 11 kilometres offshore Andhra Pradesh and is planned for around 7.2 million tonnes a year of capacity — reported as India's first GBS-based LNG import terminal, and possibly only the world's second. PNGRB has issued a public notice specifically covering KGLNG's registration, and industry coverage frames the project's regulatory treatment as reflecting the GBS design's year-round, 365-day operating capability, distinct from an FSRU's weather-limited profile. That's a real, dateable, primary-sourced development: a novel terminal design moving through PNGRB's actual registration process.

What this piece could not confirm, despite specifically searching for it, is the claim that PNGRB has issued any regulation, amendment, or formal notification reclassifying Gravity-Based Structures under the same regulatory definition as FPSOs generally — as a rule applying to the category, rather than KGLNG's project-specific registration. No PNGRB press release, no regulation text, and no trade-press coverage found for this piece states that GBS structures now fall under FPSO rules as a matter of general policy. If a reader's understanding of this came from a conversation, an industry rumour, or a source this piece's research didn't reach, it's worth checking against PNGRB's own primary text before repeating it — what's actually documented is PNGRB working through one specific project's registration on its own technical merits, via the same T4S/QRA framework described in Section 1, not a rule change redefining a whole structural category.

The definition and mechanics of a GBS (buoyant tow-out, deliberate ballasting/sinking, permanent seabed placement) are corroborated by Wikipedia's Gravity-based structure article and general offshore-engineering usage. Kakinada/KGLNG's location, capacity, "India's first GBS LNG terminal" framing, and PNGRB's project-specific public notice are from Crown LNG's own press materials, Offshore Magazine's coverage, and PNGRB's published public notice (pngrb.gov.in/pdf/public-notice/KGLNG_11072024.pdf). This piece searched specifically, across multiple phrasings, for a PNGRB statement reclassifying GBS under FPSO regulatory definitions generally and found none; that absence is reported as a finding of this piece's research, not proof no such document exists anywhere in PNGRB's fuller record, and readers should treat the general reclassification claim as unconfirmed rather than established.

Skipping the jetty: two rival companies, not partners

A separate technology trend addresses a different bottleneck: even once a terminal design is settled, connecting an LNG carrier to shore conventionally still requires a fixed jetty — a substantial, dredging-heavy, multi-year civil-engineering commitment in its own right. Two companies, based in different countries and unrelated to each other, sell an alternative. Econnect Energy, based in Norway, markets a Universal Transfer System (marketed under variants including "IQuay") — a floating platform with flexible cryogenic hoses that lets an LNG carrier transfer cargo ship-to-shore without any fixed jetty or dredging, a design the company describes as the world's first jettyless floating LNG transfer system when first deployed in 2017. Recent named deployments include units delivered to New Fortress Energy (2024), an offshore gas-import project at Wilhelmshaven II in Germany (2025), Puerto Bahía near Cartagena, Colombia, and a Shell-backed project in the Bahamas announced in August 2026. No India deployment was found in the sources checked for this piece.

Stena Power & LNG Solutions — a distinct division of the Stena Group from its better-known Stena Bulk shipping business, worth being precise about since "Stena" covers several unrelated units — sells a comparable but separately engineered jettyless design, its Jettyless Floating Terminal (JFT), alongside related self-installing regasification and power-platform products. Its named project is a model-tested jettyless LNG solution developed for Delta Offshore Energy's Vietnam LNG-to-power project, which has received Approval in Principle from both Bureau Veritas and DNV — a real engineering-validation milestone, though short of an operating deployment. As with Econnect, no India-specific deployment was found for Stena's jettyless technology in this piece's research. And despite the two companies' names sometimes appearing together in discussions of this technology category, no evidence was found of any partnership or joint venture between them; if anything, one market-research summary found for this piece lists Econnect and Stena as competitors in the same jettyless-LNG-transfer-system market segment, alongside other named players (Canaf Energy, Bluewater, Trelleborg, Imodco).

Econnect Energy's Universal Transfer System/IQuay design, its 2017 "world's first" claim, and its named 2024-2026 deployments (New Fortress Energy, Wilhelmshaven II, Puerto Bahía, the Bahamas) are from the company's own site and LNG Industry's and Rigzone's trade coverage. Stena Power & LNG Solutions' distinct identity from Stena Bulk, its Jettyless Floating Terminal design, and the Vietnam/Delta Offshore Energy AiP milestone are from Offshore Energy's coverage and Stena Power & LNG Solutions' own site. The absence of any confirmed Econnect-Stena partnership, and their listing as competitors in the same market segment, is from Intel Market Research's market-segment summary; this piece did not find, despite searching, any joint venture or formal partnership between the two companies.

Why these three threads are worth reading together, carefully

None of the three developments above is officially connected to either of the others — PNGRB's T4S amendment and registration-regime change, Kakinada's GBS terminal, and Econnect's or Stena's jettyless transfer technology are each their own, independently sourced story. But the shape they make together is worth naming as this piece's own reading, not a claim any single source makes: India's LNG-terminal regulatory framework is being simplified in one dimension (fewer open-access obligations under the new 2025 registration rules) at almost exactly the moment its physical terminal-design options are diversifying in another (a GBS terminal moving through registration for the first time, alongside global jettyless-transfer technology that, if it were ever adopted in India, would let a new import point skip the jetty-construction timeline that has historically gated how fast a new LNG terminal can actually open). Whether PNGRB's own QRA-based approval pathway for novel designs (Section 1) is built with jettyless transfer technology specifically in mind is not something any source found for this piece confirms — it's a plausible fit worth watching, not a documented plan.

What doesn't follow from any of this

The most important thing not to take from this piece is the unconfirmed claim it set out to check: nothing found here shows PNGRB has formally brought Gravity-Based Structures under FPSO regulatory definitions as a general rule, and that specific claim should not be repeated as established fact on this piece's authority. Kakinada's GBS terminal is real and moving through PNGRB's registration process, but on the evidence available, it's being handled as its own project under the existing T4S/QRA framework, not as the first instance of a newly generalised category. Similarly, Econnect's and Stena's jettyless technologies are real, commercially deployed elsewhere, and worth watching as a possible future option for Indian LNG import capacity — but neither has an announced India project, and this piece's own connective reading in Section 4, linking regulatory simplification to physical-design diversification, is offered explicitly as inference, not as a plan any Indian regulator or company has stated. Readers evaluating any of these three threads for a real commercial or investment decision should go to PNGRB's own current regulation text and the named companies' own project announcements directly, not this summary.

Sources and caveats