Fluid Dynamics News

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…

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.

Lt. Lena “Lexie” Royster, a mechanical engineer in the U.S. Coast Guard Marine Safety Center, in Washington, has been selected as the 2023 Coast Guard Engineer of the Year.The Coast Guard Engineer of the Year Award recognizes Coast Guard active duty and civilian engineers for their accomplishments and achievements. The award’s selection panel considers many factors including engineering accomplishments, awards, honors and educational achievements.“I am extremely thankful for the opportunities the Coast Guard has given me,” said Royster.

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.

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.

Finland-based marine technology group Wärtsilä will supply its EnergoFlow and EnergoProFin solutions for ten Bird Class oil and chemical tankers owned by the Singapore-based global tanker operator Hafnia."The combination of the two Wärtsilä systems ensures an optimized waterflow over and after the propeller, thereby improving propulsion efficiency considerably. The order was booked by Wärtsilä in October 2023," Wärtsilä said.According to Wärtsilä, EnergoFlow is an innovative pre-swirl stator that creates an optimal inflow for the propeller…

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…

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.

PD Ports in the U.K. has ordered a new dredging vessel from Dutch shipbuilder Neptune Marine.The 71-meter-long hopper dredge, which has already been named the Emerald Duchess following a competition among PD Ports employees, was ordered for £23 million and will arrive at Teesport next summer.Currently under construction at a shipyard in Poland for commissioning, ahead of trials in the Netherlands in 2024, the Emerald Duchess will replace the Cleveland County, which had served…

As alternative fuel engines start pushing into commercial sectors, the U.S. Department of Defense has taken notice, rationalizing that eventually, as alternative fuel grow in popularity, the diesel availability could drop while prices rise.To that end, Oak Ridge National Laboratory (ORNL) and Fairbanks Morse Defense (FMD) entered into a Memorandum of Understanding (MOU) to collaborate on the development and integration of alternative fuel technologies aimed at reducing the marine engine’s reliance on fossil fuels.

Maersk and Hong Lam Marine have conducted the world’s first ship-to-container ship methanol bunkering operation of a Maersk’s container vessel at the Raffles Reserved Anchorage in Singapore.This was also Singapore’s first methanol bunkering and it was conducted with the support of the Maritime and Port Authority of Singapore (MPA), government agencies and research institutes.Maersk’s container vessel – the world’s first container vessel sailing on green methanol – was successfully refuelled with approximately 300 metric tonnes of bio-methanol via Hong Lam Marine’s Singapore-registered tanker…

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…

bound4blue announced the appointment of Elias Boletis as an external advisor to the company.Boletis has a Doctorate in Applied Sciences from the University of Brussels and holds a MSc in Mechanical and Electrical Engineering from the Technical University of Athens (Greece) and a MSc in Turbomachinery and Fluid Dynamics from the Von Karman Institute (Brussels, Belgium). He has also been recognized with several industry awards and accolades for his contributions to the field such as integration of new technologies…

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.

Naval architecture and marine engineering firm Bristol Harbor Group, Inc. (BHGI) announced the promotion of two members of its team, Ian M. Lawson, P.E. and Teri L. LaForest, P.E.Upon earning his Professional Engineer License in Rhode Island, Lawson has been promoted to Senior Naval Architect. He has been with BHGI for over five years, during which he has filled both engineering and project management roles and specializes in the development of novel vessel designs and concepts, particularly related to alternative fuels and electric propulsion systems.

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…

Operating on Liquefied Natural Gas (LNG) from day one in service, the MV George III, the first of Pasha Group’s two new ‘Ohana Class’, Jones Act-qualified containerships, features a state-of-the-art engine, an optimized hull form, and an underwater propulsion system with a high-efficiency rudder and propeller. George III is the first LNG-powered vessel to fuel on the West Coast and the first to serve Hawaii. The 774-ft. Jones Act vessel surpasses the International Maritime Organization (IMO) 2030 emission standards for ocean vessels.

The November edition of Marine News magazine highlighted the most notable newbuilds delivered in 2022. From sturdy and nimble workboats, to the first new Jones Act laker in a generation, each vessel on display showcases the industry’s engineering prowess and technological ingenuity, with the focus on improving efficiency in operations. The maritime industry has no shortage of challenges to overcome, and each of Marine News’ top vessels will, in one way or another, aid efforts to tackle them.Mark W.

All American Marine (AAM) on Tuesday revealed it has been awarded a contract to build a research vessel for the University of Hawaiʻi at Mānoa and the University of Hawaiʻi Foundation (UHF), on the behalf of the Hawai’i Institute of Marine Biology (HIMB). This research vessel, with construction already underway in AAM’s facility on Bellingham Bay, 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.

Bristol Harbor Group, Inc. (BHGI) won an Indefinite Delivery Contract (IDC) for naval architecture and marine engineering services for the United States Army Corps of Engineers (USACE), Philadelphia District, Marine Design Center. This contract continues BHGI’s partnership with the Marine Design Center (MDC). Some of the projects BHGI has worked on for the USACE include, but are not limited to, retrofits, finite element analyses, electric load analyses, vibration analyses, computational fluid dynamics analyses, as well as barge, towboat and dredge design.In partnership since 2010, BHGI and the MDC team have worked on a wide variety of projects both for the USACE and other federal agencies, including the United States Coast Guard, NASA, and the National Park Service.

Marine News spoke to leaders at three North American naval architecture and marine engineering firms about some of the latest trends impacting their business today. Mike Fitzpatrick, president, Robert Allan Ltd.; Jeff Bowles, director, DLBA Naval Architects; and Rich Mueller, president and CEO, NETSCo., weigh in on topics such as digitalization, decarbonization and the naval architect talent pool.How do you view the maritime industry’s ongoing shifts in areas such as digitalization and decarbonization…