Cfd News

Damen Shipyards has launched a Combi Freighter (CF) 3850 at the Ba Son Shipyard in Vietnam, built for German shipping company Reederei M. Lauterjung.The CF 3850 is the first in a two-vessel order from Reederei M. Lauterjung. Following this order, Damen’s client has placed an order for a third CF 3850.The vessels are to be named MV Arion, MV Hestia and MV Neptune.Upon delivery, MV Arion and MV Hestia will enter into a long-term charter with Amadeus Schiffahrts- und Speditions, a subsidiary of HGK Shipping.

DESMI has secured third-party validation for the effectiveness of its aquaculture UV treatment systems from DNV.This development moves beyond the traditional certification provided by the Norwegian Veterinarian Institute (NVI) which verifies UV doses of at least 25 mJ/cm2. With many aquaculture operations requiring higher UV doses, typically ranging from 70 to 200 mJ/cm2, DESMI says its validation from DNV provides a much-needed layer of credibility and assurance.Historically…

RINA has awarded an Approval in Principle (AiP) for Blue Wasp Marine’s Pelican performance prediction software for wind-assisted ships.With this, Pelican has become the first software of its kind to have received class recognition.Pelican, the product of over 10 years of PhD research, is able to simulate the performance of a ship equipped with wind propulsion technologies using specific wind conditions and sea states. Pelican features a built-in force module for both aero- and hydrodynamics.

Big data, advanced computers and AI are allowing vessel designers to prepare models that leave essentially nothing to chance.“Lastly, it may be of considerable importance to form from the draught a block model of the vessel from which a still more accurate judgment may be formed of the fitness and beauty of the body. And should any defect be discovered, farther alterations must still be made, till the draught and the model are perfectly approved of. These different alterations and repeated calculations may appear very tedious…

The Golden Gate Yacht Club (GGYC) represented by BMW Oracle Racing and the Société Nautique de Genève (SNG), the Americas Cup defending champion, represented by Team Alinghi were entwined in a 2.5-year legal battle over multiple court cases, including hearings in the New York Supreme Court and the Appellate Division of the New York Supreme Court, prior to the 33rd edition of the race, due to take place in 2010.The parties disagreed about the location, format, and restrictions on boat design, all of which were changed by the courts prior to the race.

The United Arab Emirates' Abu Dhabi National Oil Company (ADNOC) has taken delivery of ADNOC MD 01, the first in a series of two new dive support vessels.The aluminum catamaran was designed by Canadian naval architects Robert Allan Ltd. and built by Grandweld Shipyards in Dubai for local diving operations in the UAE.ADNOC MD 01 and its to-be-delivered sister vessel were designed and constructed to the following notation: BUREAU VERITAS 1 ✠ HULL • MACH, SPECIAL SERVICE, FAST DIVING SUPPORT…

Researchers from the Korea Maritime & Ocean University have developed a new path-tracking technique for maritime autonomous surface ships (MASS).A multi-national team of researchers, led by Assistant Professor Daejeong Kim, has studied the path-following performance of MASS using a free-running computational fluid dynamics (CFD) model combined with the line-of-sight (LOS) guidance system, at low speeds under adverse weather conditions.MASS need to follow a pre-determined path at sea, considering factors such as obstacles, water depth and ship maneuverability.

Despite short-term obstacles driven by high inflation and interest rates coupled with supply chain issues, we maintain that the foundations supporting long-term offshore wind activity remain solid. As we prepare for the new year, let us look at 10 factors that will shape the offshore wind sector in 2024.1. A Continuously Dynamic Energy TrilemmaThe dynamic relationship of the three key drivers of affordable energy, energy security and energy transition was clearly evident in 2023 as energy affordability and security were generally more prominent themes than the transition.

Emirates Shipping Line (ESL) reports that it has cut 20% emissions on 75% of its fleet using a multi-prong approach of equipment technology and operational technique.A central aspect of the program involved a re-design of ESL’s vessels' propellers. In collaboration with designers from Mecklenburger Metallguss GmbH (MMG), ESL and the Peter Döhle group jointly developed and installed upgraded propellers on each ship. The use of these propellers reportedly yielded a significant improvement in overall flow and efficiency.

DNV awarded an Approval in Principle (AiP) certificate to China Merchants Jinling Shipyard (Nanjing) Co., Ltd. for its 11,000-CEU capacity pure car and truck carrier (PCTC) design.Recognized as the world's largest PCTC, the 234m long and 40m wide ship will have 14 decks allowing 11,000 car equivalent units (CEUs) to be stored simultaneously, which not only increases efficiency but also reduces the transport cost per vehicle.By implementing a combination of decarbonization measures…

Governments have decided to pay up to revive offshore wind farm developments after rising costs put at risk multiple projects that are needed to help them cut emissions and reach climate targets.Many countries are relying on a huge and rapid build-out of offshore wind farms which have high upfront costs but over the longer term can provide cheaper energy than fossil fuel plants.But some countries' wind power capacity targets started to look unrealistic this year after developers cancelled projects in the U.S.

UK-based offshore vessel designer Chartwell Marine has partnered with a designer and shipbuilder of specialized vessels, VARD, to introduce the Midi-SOV: a "revolutionary" 55-meter offshore wind craft. "Coming to both the US and European markets in 2024, the vessel represents the combined expertise of the respective crew transfer vessel (CTV) and SOV design leaders — providing a brand-new solution to the ongoing challenge of expanding wind power across the globe. The vessel is designed Jones Act-compliant…

Bellingham, Wash. shipbuilder All American Marine (AAM) announced it has delivered a new research vessel for the University of Hawai’i at Mānoa on behalf of the Hawai’i Institute of Marine Biology (HIMB).The state-of-the-art research vessel, Imua, is a 68.5’ x 25’ semi-displacement aluminum catamaran hull that was developed by Nic de Waal of Teknicraft Design in Auckland, New Zealand. The vessel contains proven design elements found in the recently commissioned research vessels Blue Manta and Shearwater built for BlueTide Puerto Rico and Duke University…

The goal of engineering analysis is to use models of the real world to simulate and predict the performance of a design with confidence, explore design modifications, and inform downstream stakeholders—the owners, builders, operators, and passengers—with knowledge that the design works as intended before it is built. To do so, we need models that characterize the physical world. That is easier said than done, but it underpins much of what we do as engineers. This is precisely…

CB&I, McDermott's storage business, has received Approval in Principle (AiP) for its design of a liquid hydrogen (LH2) cargo containment system from DNV.CB&I collaborated with Shell International Trading and Shipping Company Limited to provide safe LH2 shipping solutions that enable hydrogen energy supply chains using gas carriers.The containment system design is based on CB&I's proven vacuum-insulated spherical technology for onshore LH2 storage. CB&I has designed and constructed more than 130 large, field-erected LH2 storage tanks worldwide over the past 60 years.

Classification society ABS said it is using advanced modeling and simulation technologies to develop emergency response methods to assist ports and crew in responding to ammonia leaks or spills.It is the first step toward a comprehensive and fast ammonia release response system, capable of predicting the behavior of an ammonia plume and directing emergency mitigation services accordingly.Thanks to its potential for zero-carbon emissions, ammonia is widely viewed as a promising…

Ship design company Ulstein Design & Solutions has designed an offshore wind installation vessel that it says is "a safer, smarter, and more competitive ship design solution for transporting, upending and installing large monopiles on DP."The patent-pending U-STERN design, according to the company, enables longitudinal storage of monopiles and upending in the ship center line. "This allows the ship to head into the waves during the installation process, minimizing ship motions and fuel consumption, while the U-STERN provides excellent shielding from the waves.

Bellingham, Wash. shipbuilder All American Marine (AAM) announced it has delivered a new research and hydrographic survey vessel for NV5-Geodynamics. The vessel was sea-trialed on Bellingham Bay, prior to shipping via cargo ship to its homeport of Beaufort, N.C.Built to service the growing offshore wind market as well as accomplish many other scientific survey missions, Shackleford is a 73- by 26.7-foot semi-displacement aluminum catamaran developed by Nic de Waal of Teknicraft Design in Auckland, New Zealand.

U.K.-based NR Marine Services has placed an order with compatriot shipbuilder Divers Marine for a new new crew transfer vessel (CTV) to service the offshore wind industry. This newbuild, to be named NR Predator, will be a first of class Diverse Marine 27-meter CTV featuring a traditional catamaran hull form that has been CFD tested and optimized to provide class-leading seakeeping coupled with reduced fuel consumption and emissions, the builder said.This vessel is being built as "hybrid ready" with an insulated generator space ready to receive generators and batteries.

MAN Energy Solutions announced it will begin developing retrofit solutions for medium-speed marine engines as part of a research association including WTZ Roßlau gGmbh and TU-Darmstadt. The three-year research project, ‘CliNeR-ECo’, is funded by the German Federal Ministry for Economic Affairs and Climate Action (BMWK) with initial work having already commenced at the beginning of 2023.CliNeR-ECo aims to develop concepts for diverse, medium-speed, marine engines that will enable the retrofitting of entire ship fleets at reasonable economic and technical costs.

The increased performance of the fast-responsive Schottel RudderPropeller Dynamic SRP-D was confirmed by external sources. Initial investigations into the effect of thruster response on DP positioning were carried out in cooperation with MARIN, based in the Netherlands, and Polish ship designer MMC. The results obtained demonstrated much-improved position accuracy and enhanced operability of the vessel.Further calculations made by DNV and simulations from a cooperation with VARD showed that the SRP-D greatly improves the vessel’s operational performance and environmental impact…

Oscar Propulsion Limited and the University of Strathclyde have come up with a way to reduce underwater radiated noise from ship propellers.According to Oscar Propulsion, its patented PressurePores system reduces propeller tip vortex cavitation by applying a small number of strategically placed holes in the propeller blades. The addition of these pressure-relieving holes allows ships to operate with a more silent propeller.Lars Eikeland, Marine Director, Oscar Propulsion, said…

HydroComp is a well-established, small engineering firm focused on hydrodynamic and propulsion system simulation, providing design tools for engineers and naval architects to focus on vessel performance, including emissions. Don MacPherson, HydroComp’s long-tenured Technical Director, discusses the impacts of tightening emissions regulations, with insights on maximizing new vessel designs and refits.Don, maritime has been in the crosshairs of regulators to reduce emissions. What do you see as the top new regulatory issues that are impacting ship and boat design…