Impeller News

Survival technology specialist Survitec has launched its next-generation high-expansion foam fire suppression system, designed to deliver higher foam output at lower operating pressures while reducing both installation and through-life costs for shipyards and shipowners.The key breakthrough lies in a redesigned generator that produces greater volumes of foam at significantly lower feed pressures. Traditionally, high pressure has been a limiting factor in foam system performance…

It’s no surprise that waterjets are great for shallow-draft, highly maneuverable craft, but vessel designers are busting out of the old stereotypes.Vessel designer Aircat Vessels has developed a surface effect ship (SES) crew transport catamaran, AIRCAT 35 Crewliner, that can sail at over 50 knots and manage offshore transfers in 2.5-meter seas. The air cushion system from ESNA dynamically adjusts to sea conditions so the vessel can reduce transit times, reduce fuel consumption…

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…

Force Control Industries introduces a new line of Build America, Buy America Act (BABAA) compliant thruster brakes under the brand name: HYDRASTOP.These spring-set, electrohydraulic thruster-released brakes are now available for 6-13” drums only with plans to develop larger drum sizes and a complete disc brake series. Thruster brakes statically hold and/or dynamically stop a load: they are ideal for industrial applications like cranes, movable bridges, conveyors, marine deck equipment, and more.

Combat craft are used by both large and small navies, and every navy, coast guard or maritime service operates some kind of boats.The U.S. Navy’s boats are used for a variety of tasks from personnel and cargo transport to ship repair and maintenance to environmental response.The combat craft range from pull sized patrol boats down to ridged-hull inflatable boats (RIBs) armed with machine guns. Boats include shipboard RIBs, maritime security boats, dive support boats, workboats…

Thordon Bearings reports it has secured a second major Mexican Navy contract for the supply of its water-lubricated SXL wear rings for retrofit installation to the waterjet propulsion nozzles on 25 interceptor patrol vessels.The contract follows the success of extensive trials in which the SXL material replaced the use of other anti-corrosive coatings in waterjet impeller housings, resulting in increased resistance to cavitation induced corrosion.Rotary Parts, Thordon’s authorized distributor in Mexico, is supplying the housings for 25 Polaris and Polaris II fast patrol boats.

New Zealand-based HamiltonJet has launched its HJ215 waterjet, an ideal propulsion solution for a wide range of boats, says the company.It is compact and lightweight and it is built for greater efficiency at high speeds, making it an excellent waterjet for thrill-seeking tourist crafts, search and rescue vessels and other marine sectors.The new factory-made TURBO II impeller option offers superior performance where acceleration and high thrust in aerated water are important. The…

MAN Energy Solutions and Doen WaterJets (DOEN) have agreed to join forces to offer a fully integrated propulsion system solution to the Australian Army’s LAND 8710 Littoral Manoeuvre Vessel Phase 1A (LMV-M) program.The program aims to acquire a medium landing craft suitable for a range of missions in Australia’s northern waters and beyond.The cooperation spans the full product lifecycle including propulsion system design, integrated logistics support and commissioning, through…

HamiltonJet said its new HTX47 waterjet has improved upon its previous jet model to offer a more seamless installation experience. Its new compact inboard footprint design and fully integrated hydraulics system ensures faster installation in the vessel.HTX47 new hydrodynamic design delivers 4% more high-speed efficiency, a 16% increase in peak bollard pull, and offers better operation at minimum speed, according to the manufacturer. It also features enhanced corrosion protection for more durability and expanded impeller rating range for greater compatibility for a wider range of engines.

Thordon Bearings said Monday that its water-lubricated elastomeric polymer bearings have been  installed to well pumps aboard an undisclosed offshore oil platform operated by Abu Dhabi National Oil Company (ADNOC).Five KSB three-stage mixed flow impeller-type pumps were each retrofitted  with Thordon pump bearings - 13 SXL intermediate bearings, four Composite bearings and a single SXL throttle bearing -  replacing the  original silicon carbide bushes, the company said.Dubai-based engineering firm Ocean Power International (OPI)…

Castoldi has launched the new Turbodrive 600 H.C.T. waterjet geared for large vessels.The largest in the Castoldi range to date, the new waterjet is equipped, like the other models of the range, with an integrated gearbox (certified for heavy duty ratings), with hydraulic clutch, that with its numerous gear ratios allows a match with any engine on the market.“Our aim is to supply to the customer with not only the waterjet but a complete package that incorporates the propulsion with integrated gearbox and clutch…

With more wind farms sprouting up in Europe, Asia and now here in the United States, a steady stream of crew transfer vessels (CTV) will be needed to support their construction, maintenance and operation. Typically aluminum catamarans, these vessels are deployed to ferry personnel and light equipment to and from offshore wind farms on a daily basis.While a solid portion of CTVs in the established European offshore wind market are propelled by waterjets, Adam Mills, sales director at Marine Jet Power…

Parts fabricated by additive manufacturing (AM) – also known as 3D printing – and installed on an oil tanker for operational testing have been validated to be in good working condition, marking a significant step for the technology's implementation in the marine industry.The project involving ABS, ConocoPhillips Polar Tankers, Sembcorp Marine Ltd and 3D Metalforge started in February 2021 with the fabrication and lab-testing of functional additive manufactured parts, which were then installed on board the oil tanker Polar Endeavour.

When an old Stalker cast iron pump failed on Petuna Endeavour in the Southern Ocean, there was an urgent requirement for some fast action. The failed pump was replaced by an Aussie GMP model B3XR-A 5.5kw 3-in. NiAl bronze pump that fitted into the application area like a glove.The pump produces 1400 lpm flow and offers a maximum head of up to 26m. The 5.5kw motor means there’s loads of power to drive it and the pump, self priming in design, will draft water through a vertical…

This month MR dives inside the $60 million refit of RV Roger Revelle, a project which leverages a treasure trove of ‘lessons learned’ from recent refits in the academic research vessel fleet and highlights the value of slimming the vendor list.Research vessel (R/V) Roger Revelle is back at work after a midlife refit involving upgrades from top to bottom, bow to stern. The ship is owned by the Office of Naval Research and has been operated by Scripps Institution of Oceanography at the University of California San Diego since 1996. It is one of the largest ships in the U.S.

A Sydney base pump manufacturer and defense contractor has won a contract, to supply 3” engine drive salvage pumps for the Republic Of Korea Navy. The pumps are unique and have application not only in Korea, but in warships and support vessels throughout the world."The original requirement was for a lightweight portable diesel drive salvage pump, capable of handling saltwater,” said Chief Engineer, John Hales. "We'd already developed high pressure firefighting pumps for seawater applications in the form of both the Seamaster and Sea Skipper diesel drive machines’…

Royal IHC, the provider of design and construction for the specialist maritime sector, has been awarded another contract by Van Oord to design and supply the dredge installation for its new 10,500m3 trailing suction hopper dredger (TSHD).The suction pipe installation with underwater pump, two dredge pumps and three jet water pumps will be installed on the new TSHD and built in Singapore.Earlier this year, IHC was commissioned to deliver similar systems for two other Van Oord TSHDs.“We were delighted to receive this repeat order from Van Oord, a long-standing and highly valued customer of ours,” says IHC Group Executive Director Diederik van Rijn.

After working with the Royal Australian Navy for several years, a small Australian pump manufacturer – Sydney-based Australian Pump Industries – which works on both the naval and commercial side of marine, developed a high-pressure fire and salvage pump dubbed the Sea Skipper, designed specifically for seawater applications. While engaged in maintenance work on Australia’s FFG fleet, Aussie Pumps’ Chief Engineer, John Hales, saw workboats using commercial grade, agricultural style…

To curb global marine and air pollution, stricter limits on the sulphur dioxide content of marine exhaust gases stipulated by the EU and IMO (International Maritime Organization of the UN) will apply from 2020. From an engineering point of view, this can be achieved by using natural gas or fuels with a low sulphur content, and by cleaning the exhaust gases with a scrubber.For on-board exhaust gas cleaning systems KSB ITUR Spain S.A., a KSB Group company of located in Zarautz,…

The technology group Wärtsilä has announced that its LJX series of modular waterjets has been upgraded to deliver even greater efficiency with low levels of cavitation and underwater noise. Following this upgrading, the company’s modular waterjets will be redesignated as the Wärtsilä WXJ series.The development is based on a new axial pump design, which boosts performance with an increased thrust of as much as 3 percent, while the improved cavitation margins help reduce the environmental impact by lowering noise levels.

Whether it's a pushboat, longliner, ferry or box ship, maintaining an optimal temperature is essential to an engine's performance and longevity. A keel cooler pump is no place to cut corners. That's why Mitsubishi Turbocharger and Engine America, Inc. chose the reliability of JMP Corporation's JPR-ME5000 for seven of its heavy and continuous duty engines, and cites the company's ongoing support as the reason it continues to do so.At 158 gph at 2,850 rpm, the JMP Corporation JPR-ME5000 Bronze Impeller Cooling Pump is a real performer. It has 2" NPT in and 1.5" NPT out ports.

As Oceanology International celebrates its 50th Anniversary, Marine Technology Reporter explores half a century of subsea technology development and discovery. Oceanology International Americas runs February 25-27, 2019 in San Diego.When Oceanology launched in 1969 in the seaside resort of Brighton the world was a very different place. For a start, Brighton was home to the mods and rockers, who would square off against each other on the town’s elegant seafront. The British currency included shillings and ha’ pennies and man had yet to step foot on the moon.More crucially…

Allweiler GmbH, part of CIRCOR International, Inc., will exhibit its redesigned vertical centrifugal pump solutions for ship engine rooms at this year’s SMM fair in Hamburg.According to the manufacturer, a new innovative foot design reduces space requirements and improves operational safety."The new compact MA-S and MA-C series are vertically installed centrifugal pumps with axial inlets and radial outlets. The S version was designed for simple and rapid assembly and disassembly of the insert unit with impeller.