With the commissioning of the Norway's Bukser og Berging Voith Water Tractor Baut. the improved characteristics of the new Voith Schneider Propeller (VSP) blades were demonstrated. The bollard pull — as supervised by DNV — was improved by nine percent while using the same input power.
The VSP is designed to provide accurate, stepless and extremely swift thrust variations in accordance with XY coordinates. In order to improve the hydrodynamic characteristics of the VSP further, a new generation of blades has been developed. The basis for the successful development is the numeric simulation of the fluid dynamics (CFD = Computational Fluid Dynamics). The CFD method initially serves to optimize the shape of the propeller blade; it also provides the exact loads for the structural and mechanical optimization by using the Finite Element Method (FEM).
The new VSP blades for the propeller size 36R6/255- 2 represent an important step towards the further improvement of the hydromechanics of Voith Schneider Propellers.
For new propellers, the new profiles will be standard; any further improvements can be realized with immediate effect. Voith, founded in 1867. has a long history in the marine propulsion field. With 24,000 employees and annual sales of about $3 billion, it is one of the largest of Europe's family-owned companies.
Circle 1 on Reader Service Card Below: A CAD illustration of the new VSP size 36R6/255-2 with a propeller input power of 3380kW.
Top Right: Blade after machining.
The Crossover ball joint from Vosta LMG is a new dredge ball joint that is designed to provide optimal flow performance. Through computational fluid dynamics (CFD) the frictional losses and turbulence have been reduced. Conventional dredge ball joints act like a ball valve when tilted, causing the flow
methodologies which include predictive engineering techniques such as Finite Element Analysis. Dynamic Analysis, Thermodynamic Cycle Simulations and Fluid Dynamic Analysis. Incorporated into this new engine are the results of extensive field study and experience was gained from the RK270 series, which
design follows the systems engineering approach with integration of the propeller and the hub with modern hydraulics and propulsion controls. Computational Fluid Dynamic (CFD) calculations are used to analyze, not only the propeller performance but most importantly also, the interaction between the propeller
. The flow area is equal on both sides of the through-shaft and angled disc. According to the manufacturer, there is less turbulence and reduced fluid dynamic torque than in "high-performance" butterfly valves with offset discs. Rated at 285 psi w.p. with reserve strength to handle sudden differentia
on an earlier, small-scale 65-ft., 50 LT Navatek lifting body demonstrator craft called M1DFOIL. as well as through extensive computational fluid dynamics (CFD) studies. A former U.S. Navy Surface Effect Ship (SES-200) provided the parent hull of the HYSWAC, reducing project costs. During the
Guidelines (NVIC 9-97 Ch-1). The catamaran features an advanced hull shape that was custom designed using digital modeling and Computational Fluid Dynamics (CFD) analysis testing. CFD hull optimization led to savings of nearly 20 percent power. The hull design is complemented by Teknicraft’s signature
, machinery and system configuration. These developments were based on DNV GL’s integrated systems engineering approach COSSMOS, computational fluid dynamics (CFD) calculations, and a containment system design, tailored to a specific operational profile and anticipated trades. HHI and DNV GL carried
with the USACE is the design of a wicket lifting vessel for operation at the Olmsted Lock & Dam on the Ohio River. Extensive use of both Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA) was incorporated in the design process to ensure that the vessel is capable of performing the necessary
. Extensive engineering design work is now performed using specialized software to produce local and global finite element (FE) and computational fluid dynamics (CFD) analysis to develop optimum designs. The ability to model equipment and system responses to environmental forces helps advance product development
emeritus, Webb Institute of Naval Architecture, Glen Cove, N.Y. Committee on Journal of Ship Research — chairman, Ralph D. Cooper, head, Fluid Dynamics Program, Office of Naval Research, Department of the Navy, Arlington, Va. Committee on Marine Technology — chairman, E. Scott Dillon, consultant
capability at Carderock.A significant amount of testing is conducted before coming to the LCC. “We can do our computer modeling of the computational fluid dynamics, then build a physical model to test in our tow tank. Then we can test that model, or a larger one, in the LCC. Eventually, our signatures department
REPAIR & CONVERSION the concerns about security as the electric grid becomes more He added that improved safety features, including lifeboats, dependent on offshore wind. would be necessary in a conversion and that personal com- These calculations and estimates provide a backdrop for the fort is also an
PRODUCTS Telescopic Rescue Poles Seeing the need for a swift and accu- rate recovery method should a person fall into the water, the team at Sham- rock Quay in Southampton – part Norton Rapid Prep XHD of MDL Marinas Group – acquired KINETIX Coarse and Medium Discs a Reach and Rescue telescopic
VESSELS ABS Grants AIP for First Jones ACT SOV as storing spare parts and tools. According to Vard, the vessel is designed to be environ- mentally friendly with a focus on low fuel consumption and ease of construction. Vard said the design incorpo- rates a state-of-the-art hull form designed for all
ENVIRONMENTAL REVIEW Avoiding a Wrong Turn to IMO Compliance By Simon Whitford Machine learning is the clever part of this story but accessing vessel data is also important. Equipping vessels with ioT sensors/dataloggers has become a cheap, straightforward business which does not require vessel
PEOPLE & COMPANY NEWS HII WCI National Waterways Foundation Mecklenborg Calhoun Woodruff Stephaich Calhoun Toohey Toohey Harris, Petters, Beckstoffer Gaskill tion of all ? eld installations and will gram designed to shape the future of NWF Elects Trustees, Of? cers coordinate temporary jobsite
PEOPLE & COMPANY NEWS Massport McCarthy Holvik Barrie Fitzpatrick Meyran Schmaltz Wieland Verble ter of Science degree in Environmen- (Massport) Board of Directors voted to on November 8th, 2019. Joining Rob- tal Science from UNC Chapel Hill. make Michael Meyran the Authority’s ert Allan Ltd.
2019 Vice Admiral Emory S. “Jerry” sented to an individual for outstanding Petters Honored by SNAME The Society of Naval Architect and Ma- Land Medal. Petters received the Land accomplishment in the marine ? eld. It rine Engineers (SNAME) awarded HII Medal during the Annual SNAME Ban- was established
Chris-Marine Cylinder Liner Monitoring Prime Mover Controls is a world leading manufacturer of Marine Propulsion Controls and Integrated Machinery Alarm and Control Systems. Our products also include Engine Order Telegraphs, Navigation Light Control Panels, and a variety of Marine Instruments. We have
T TECH FILES The power of Data helps OSV Operator Cuts Consumption Stena Line Stena Line Test Drives AI, Saves Fuel Stena Lines completed a pilot project using arti? cial intel- ligence (AI) technology to predict the most fuel-ef? cient way to operate a vessel, the Stena Scandinavica on the Gothenburg –
GREAT SHIPS OF 2019 Stena Estrid Stena Estrid, built in China at AVIC Weihai Shipyard, is the ? rst of ? ve new Stena Line next generation RoPax ves- sels, three of which will be introduced on the company’s Irish Sea routes from Dublin to Holyhead and Belfast to Liv- erpool. Sister ship Stena Edda is
GREAT SHIPS OF 2019 Wind of Change Wind of Change is a maintenance ves- drive the diesel-electric vessel. Two the landing platforms of the wind farm sel for offshore wind turbines, built in 1,400 kW transverse thrusters and an towers directly via a special, hydrauli- Turkey at the Cemre shipyard for
I INSIGHTS: DIGITALIZXATION be in the form of something far more sinister, such neous connections, means that information can as terrorist groups. For example, seaport competi- be shared back and forth in a fully mobile, highly tors may deploy drones to disrupt operations, or resilient web of communicatio
Index page MTR NovDec19_Revised:MTR Layouts 12/5/2019 3:38 PM Page 1 Advertiser Index PageCompany Website Phone# 43 . . . . .Aero Tec Laboratories, Inc . . . . . . . . . . . . . . .www.atlinc.com . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .(800) 526-5330 21 . . . . .Blueprint
Image: Trendsetter Vulcan Offshore An artist’s rendering shows a typical tethered BOP installation. The Wellhead Fatigue Mitigation System uses four anchors sequent time work is done on the well and then translate that to provide foundations for the tensioner units, tensioners that to fatigue damage
ure, geophysical impacts on water qual- were helpful in understanding thermal els developed by the USGS, U.S. Army ity and ? sh habitat, and stream bed evo- dynamics, tracking pollutants, trac- Corps of Engineers and U.S. Bureau of lution. ing nutrient drift patterns and follow- Reclamation. ing the
oat-mounted sonar has long these technologies are changing the humans all rely on the Kootenai River, it been the technology of choice ways rivers and inland waterways are has become a hotbed of research on ? u- for gathering bathymetry data modeled, and delivering valuable new vial processes
Dr. Mathias Jonas International Hydrographic Organization By Greg Trauthwein Brie? y discuss your personal and and National Hydrographer of Germany tronic Chart Display and Information professional history. Speci? cally, with responsibility for sea survey and System ECDIS in 1999 and was con- how
V VESSELS and the 18th built as part of the teaming USS Delaware (BB 28), which was de- 2013. The submarine was christened by VLCC with New SOx agreement with General Dynamics Elec- livered by Newport News in 1910. Jill Biden, the former Second Lady of Scrubber Delivered tric Boat. More than 10
VOICES BORIANA FARRAR, VP, SENIOR CLAIMS EXECUTIVE & COUNSEL, AMERICAN P&I CLUB Trailblazer Boriana Farrar is a familiar face in maritime circles, the Vice President and Counsel and a Senior Claims Executive and Business Develop- ment Director for the Americas at the Ship Owners Claims Bureau, Inc.
OFFSHORE WIND THE INSTALLATION FLEET 14-meter leg extensions to manage off- transport of higher and heavier turbine Delft Offshore Wind Turbine Concept tion between research partners TU Delft, shore sites with deeper water and higher components. (or DOT), in just one hour, using the ? rst TNO, Van
OFFSHORE WIND THE INSTALLATION FLEET 110MW Changhua wind farm in 2020. Both wind farms are currently under construction.” Esteyo’s ELICAN Seajacks concept. UK-based Seajacks has been operating in the off- Source: ALE shore wind business since 2006. Since then, it’s built the Kraken, Leviathan, Hydra
ENVIRONMENTAL GREEN SHIP RECYCLING n May 2014 National Geograph- is tremendous pressure from both gov- The Wrong Way to Recycle A Vessels a cash buyer, the new owner will use a ic wrote an in-depth article on ernment regulators and within the ship- To place pressure on both shipowners number of different
SHIPBUILDING USCG POLAR SECURITY CUTTER the region. The Coast Guard is the sole to man, and there are signi? cant natu- economic investments with every Arctic Urgent requirement provider and operator of the U.S. polar ral resources there,” said Coast Guard nation in key strategic areas, such as oil
WORKBOATS THE OSV MARKET DEMEREST TIDE: Tide- water vessel now working Eastern Mediterranean Photos: Iain Cameron ering longer term sentiments. A reckon- Tidewater units are oper- to point to actual demand seeing dayrates just above $40,500, ing in an early September 2019 confer- ating, its slide deck