Cfd News

American Bureau of Shipping (ABS), HD Korea Shipbuilding & Offshore Engineering (HDKSOE) and Siemens have signed a memorandum of understanding to develop digital twin technology for assessing leak behavior and safety aboard ammonia-fueled vessels.The collaboration, announced at Gastech 2026, will combine computational fluid dynamics analysis with digital twin technology to rapidly predict how ammonia would disperse in the event of a leak.The technology is intended to allow a range…

Classification society ABS has reviewed bound4blue's methodology for calculating Pwind values used to quantify the contribution of the company's eSAIL suction sails toward compliance with maritime emissions regulations.The review covered the company's methodology for producing aerodynamic force matrices used in Pwind calculations for the Energy Efficiency Design Index (EEDI), the Energy Efficiency Existing Ship Index (EEXI) and FuelEU Maritime compliance.bound4blue said the methodology combines computational fluid dynamics (CFD) modelling…

Korean Register (KR) has published the "Numerical Calculation Guidelines for the Determination of the Attained EEDI," developed through a joint research initiative with HD Hyundai Heavy Industries (HD HHI) and Samsung Heavy Industries (SHI).The guidelines establish a standardized methodology for numerical analysis based on Computational Fluid Dynamics (CFD), providing an alternative to the conventional physical model testing previously used to verify vessel energy efficiency.As the International Maritime Organization (IMO) continues to tighten greenhouse gas reduction regulations…

Saildrone has announced its newest platform, Spectre. At 52 meters (170 feet) long, weighing 250 tonnes, and capable of up to 30 knots, Spectre is a high-endurance USV designed to deliver multi-mission effects above and below the surface. Spectre’s design is engineered from the keel up for long-range, quiet, persistent operations.Spectre is Saildrone’s largest, fastest, and most capable platform to date.The US Navy is facing unprecedented challenges in maintaining maritime superiority across numerous regional hotspots simultaneously, says the company.

EcoNavis Solutions has completed retrofit installation of its Eco Boss Cap to a second vessel operated by Thailand-based Kaizen Ship Management. The successful installation marks the first repeat order for the energy-saving propeller technology since market introduction last year.The latest retrofit, carried out last week on the 32,491dwt bulk carrier YC Fortitude, follows the July 2025 installation on the 31,807dwt general cargo ship SYFC Araya. After six months of operation…

EcoNavis has launched a new online savings calculator to help shipowners and operators make an initial assessment of the fuel-saving potential of an Eco Boss Cap retrofit.Available on the EcoNavis website (econavis.co.uk), the Eco Boss Cap Savings Estimator allows users to enter basic vessel information – ship type, dimensions, engine power and fuel price – to generate an indicative estimate of annual fuel and cost savings from the novel propeller hub. The tool is intended as…

Daughter Craft No. 3, commissioned by Purus, is progressing through final outfitting ahead of sea trials. Engines are now installed with Volvo Penta IPS drives, and the vessel’s electronics and interior systems are well underway in outfit.Diverse Marine has worked with Chartwell Marine to produce this daughter craft design, with inboard propulsion systems fitted with IMO Tier 3 exhaust after-treatment to reduce emissions.The Daughter Craft can serve as a nearshore CTV as well…

Damen Shipyards Group announced the completion of sea trials for the latest Island Class ferry for BC Ferries. The seventh Island Class vessel in a series of ten undertook trials during weeks 49 and 50 last year in the Black Sea.Damen is currently constructing four Island Class vessels for the Canadian ferry operator. Upon delivery, the vessels will fulfil an important function, connecting coastal communities along the British Columbian coast, a role that is thoroughly aligned with Damen’s values, says Project Manager Richard Tijpens. “We are a family company, with deeply held family values.

Poland allocated 3.4 gigawatts (GW) of capacity in its first competitive offshore wind auction, the country's energy regulator URE said on Thursday, a boost for the renewable energy sector after setbacks in neighbouring markets.The auction was seen as a test of investor confidence in offshore wind, coming after U.S. President Donald Trump's opposition to renewables effectively froze the U.S. market and recent auctions in Denmark, Germany, and the Netherlands failed to draw bidders.Poland awarded 25-year contracts at a price range of 476.88 zlotys ($133.09) and 492.32 zlotys per megawatt hour…

DNV has awarded an Approval in Principle (AiP) to the joint consortium of MSC, Zhoushan Changhong International, and CIMC ORIC for a new 21,700 TEU ammonia-dual fueled ultra-large container ship design.The AiP is another milestone in the development of next-generation, zero-carbon mainline container shipping.The proposed 21,700 TEU container ship integrates the latest-generation of ammonia dual-fuel main engines alongside oversized C-type ammonia tanks.The hull design, with a new vertical bow…

Lloyd's Register (LR) has granted Approval in Principle (AiP) to Rondal for its Aero Wing Sail, following completion of concept-level assessment activities in line with LR’s Guidance Notes on Wind Assisted Propulsion Systems (2025). The AiP was awarded in a ceremony at Metstrade 2025 in Amsterdam. The Aero Wing Sail is a rigid wing-sail concept designed for application on large yachts and multihull platforms to provide wind-assisted propulsion capability and ease of integration within vessel layouts.

Finland-based Bluetech has partnered with NYSE-listed INSW to develop Bluetech’s new ‘SeaWasp’ tanker vessel design, purpose-designed for wind but still practical for INSW MR fleet operations.With the support of wind-propulsion specialist Norsepower, Bluetech modified its BT50 design to extract maximum forward thrust from two 35-metre Rotor Sails. This resulted in a total savings of up to 876kW of propulsion power on one representative INSW MR tanker route from San Francisco to…

The European Union (EU)-funded MARPOWER project (Efficient zero-emissions gas turbine POWER system for MARitime transport) is addressing the decarbonization of maritime transport. Shipping is responsible for almost 3% of global greenhouse gas emissions, a figure expected to rise in the coming years, making it essential to deploy cleaner, scalable, and economically viable solutions that meet tightening international climate regulations.To respond to this need, the MARPOWER project…

Voltron Future announced the launch of its CTV-26 RON, a high performance crew transfer vessel designed for the offshore wind sector. This project marks Voltron Future’s official entry into the maritime industry. Developed in consultation with wind farm operators and marine professionals, the vessel prioritizes efficiency, reliability and crew comfort.The CTV-26 RON is a 26-meter multihull catamaran engineered for reduced fuel consumption, extended range and superior seakeeping. With capacity for 24 passengers and four crew, it achieves a top speed of 36 knots.

As shipowners eye a future full of alternative fuel solutions -- LNG, ammonia, methanol, and LPG, among others -- a technical sticking point traditionally has been the fuel pump, as different fuels pose different technical challenges. DESMI says it has developed a gamechanger.The DesFuel Deepwell PumpThe new DesFuel Deepwell Pump from DESMI is touted by the company as the world’s first marine fuel pump designed from the ground up for all alternative fuel compatibility and flexibility.

On 27 August, Damen Shipyards Group launched the latest Island Class ferry for Canada’s BC Ferries. The vessel is the second of four Island Class vessels currently under construction at Damen Shipyards Galati in Romania. Once operational, the ferries will provide low emission services connecting coastal communities along the coast of British Columbia.When delivered, the ferry will be the eighth Island Class vessel that Damen has built for BC Ferries. The Island Class is based…

French ferry operator Corsica Linea has achieved up to 22% fuel savings on its RoPax ferry Pascal Paoli following the installation of a retrofit package delivered by Finnish technology group Wärtsilä.The upgrade, completed in late 2024, included the installation of a twin screw controllable pitch propeller (CPP) system optimized for the ship’s operating profile, an EnergoProFin energy-saving propeller cap, and updated control systems with customized combinator curves for different…

bound4blue has taken a step forward in simplifying the adoption of wind power worldwide, with DNV validation of its "wind propulsion system force matrix" calculation method. This validation provides shipowners, designers, and yards with a trusted, regulation-ready tool to evaluate the performance of bound4blue’s eSAIL.The validation gives the industry a reliable tool to easily calculate the benefits of bound4blue’s eSAIL suction sail technology, without the need for full-scale testing.

Lloyd’s Register Advisory has verified the performance of Anemoi Marine Technologies’ wind-assisted rotor sails on TR Lady Kamsarmax following a year-long, multi-voyage testing period.In a Statement of Fact, Lloyd’s Register Advisory confirmed the methodology Anemoi used for calculating fuel and emissions savings from the three 24 meters high Rotor Sails installed on TR Lady - a Kamsarmax bulk carrier owned in funds managed by Tufton Investment Management and chartered by Cargill.The…

How does ammonia behave when it leaks in an engine room? How does a cloud of escaped ammonia disperse during bunkering operations? These and many other critical safety questions that must be understood if ammonia is to become widely adopted as a marine fuel are addressed in ABS' latest research.Safety Insights for Ammonia as a Marine Fuel brings together the findings of advanced ABS research into the performance of ammonia on board.ABS performed computational fluid dynamics (CFD)…

CMA CGM Seine, a new 24,000 TEU LNG dual-fuel container ship classed by Bureau Veritas (BV) and built by Hudong-Zhonghua Shipbuilding (HZSY), was delivered.CMA CGM Seine the first vessel in a four-ship series, with BV providing classification and BV Solutions Marine & Offshore (BVS) providing advisory services. The CMA CGM SEINE plays a crucial role in CMA CGM’s low-carbon strategy. The vessel integrates a dual-fuel propulsion system supported by GTT Mark III membrane-type LNG bunker tanks…

Globally recognized maritime research institute MARIN has verified that efficiency levels modeled for ABB Dynafin™ propulsion concept will convert to real-world ship performance gains, following tests at its Concept Basin in the Netherlands.Launched in May 2023, after a decade of development, ABB Dynafin™ consists of a main electric motor that powers the rotation of a large horizontal wheel which supports vertical blades – each controlled by an individual motor to mimic the motion of a whale’s tail.

Italian waterjet systems company Castoldi has announced recent successful sea trials for two patrol vessels equipped with dual installations of the latest Castoldi Turbodrive 400 HCT waterjets.One newbuidings has been built for the Italian Coastguard, the other for fisheries patrol duties in the North Sea, Germany.The new 16-meter patrol vessel for the Italian Coastguard recently exceeded its design brief in an early sea trial, said Giacomo Castoldi, owner at Castoldi. “This new generation…