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Marine Propulsion News

16 May 2024

Efficiency Gains from Eliminating the Hub Vortex

Holy Boss Cap undergoing  trials.
Image courtesy EcoMarine Innovations

There is hydrodynamic solution that delivers multiple benefits for ship owners facing increasingly tough regulatory requirements and rising operational costs, writes Dr. Batuhan Aktas*One area of ship operations that has attracted much attention in recent years due to the possibilities it represents for emissions reduction is that of cavitation. During ship operations, cavitation occurs because of vortices that build up and cause bubbles to collapse under the ship’s propeller. The results of this process include increased noise, vibration and energy usage.

13 May 2024

Fit for Refit: Castoldi Launches 400HCT Turbodrive Waterjet

Castoldi launched the latest in a new range of hydrodynamically optimized waterjets; the Turbodrive 400 HCT. Image courtesy Castoldi

Castoldi launched the latest in a new range of hydrodynamically optimized waterjets; the Turbodrive 400 HCT.With a 400 mm jet housing, hydraulic gearbox/clutch and high thrust efficiency, the Turbodrive 400 HCT was designed using  Computational Fluid Dynamics (CFD) software.The development of the new family of Castoldi HCT waterjets started 12 years ago and according to Giacomo Castoldi, owner at Castoldi S.r.l. “Thanks to the very latest developments in fluid dynamics, the new Turbodrive 400 HCT is around 12% more efficient than the outgoing model and is perfectly interchangeable with it.

16 Apr 2024

Wärtsilä Launches New High-Performance Thruster and Propulsion Control Solution

(Credit: Wärtsilä)

Wärtsilä has introduced a new high-performance thruster and propulsion control solution, which is said to raise the level of offshore dynamic positioning for greater efficiency and operational performance of vessels.The company’s new high-performance thruster and propulsion control solution package utilizes a combination of Wärtsilä’s WST-E embedded electric steerable thruster and WST-R retractable thrusters, together with an updated remote propulsion control system featuring an enhanced user interface ProTouch…

04 Apr 2024

CIMAC Congress: Call for Papers Launched

More than 700 experts from all over the world attended over 200 presentations given during the CIMAC Congress in 2023. Now, the call for papers for the CIMAC Congress 2025 to take place from May 19-23, 2025, in Zurich has been launched. The organizers of this 31st CIMAC World Congress invite everyone to submit proposals in the fields of power, drives, and propulsion technology.The topic streams are “digitalization”, “towards net zero”, “engine optimization & retrofits”, “basic research and advanced engineering” and “operators perspective”. “For the 2023 congress, we received almost 800 abstracts”, said Jonas Åkermann, one of the two Vice-Presidents Technical Program, “and for 2025, we expect a similarly high number. About 200 will be approved for full presentations.

04 Apr 2024

Damen Naval to Equip Anti-Submarine Warfare Frigates with RENK Gearboxes

Anti-Submarine Warfare Frigate (Credit: Damen Naval)

Damen Naval has contracted RENK to supply the gearbox systems for the new anti-submarine warfare (ASW) frigates.The Dutch shipyard is building four new frigates, two each for the Royal Netherlands Navy and the Belgian navy.The contract includes eight gearboxes that are part of the CODLAD (COmbined Diesel-eLectric And Diesel) propulsion system.RENK's Dutch subsidiary Schelde Gears will provide support in design and service activities.The first gearboxes are due to arrive for installation in October 2025…

18 Mar 2024

GE Vernova Notches Singapore Navy Win

GE Vernova’s Power Conversion business was awarded a contract by Singapore shipbuilder ST Engineering Marine Limited to supply its Ship’s Electric Grid with Integrated Full Electric Propulsion (IFEP) equipment for the Republic of Singapore Navy’s six-ship Multi-Role Combat Vessel (MRCV) program.The six MRCVs will be the first IFEP-powered vessels for the Republic of Singapore Navy (RSN) and will replace its fleet of mechanical drive Victory-class missile corvettes, which have been in service since 1989. Delivery of the electric propulsion systems for the new ships is planned over the next 10 years.GE Vernova’s Ship’s Electric Grid includes all generators…

18 Mar 2024

Esvagt Picks Brunvoll Propulsion for New SOV

(Credit: Hav)

Norwegian firm Brunvoll has been selected as a supplier of the propulsion and maneuvering system for one of Esvagt’s new offshore wind service operation vessels (SOV).Esvagt’s new SOV will be controlled by Brunvoll’s propulsion and thruster control system, BruCon PTC.The vessel will be outfitted with two azimuth propulsion thrusters, two retractable azimuth thrusters, and a tunnel thruster.Once completed, the new vessel will enter operation for Vestas on the Hollandse Kust West VI wind farm in the North Sea. The wind farm will feature 54 wind turbines and can deliver 760 MW.

15 Mar 2024

Brunvoll Inks DP2 Upgrades Deal for More Møkster Vessels

The Stril Mermaid and Stril Mariner vessels (Illustration - Brunvoll, with photos from Møkster)

Maritime systems supplier Brunvoll has signed a contract with Simon Møkster Shipping to deliver upgrades for Stril Mermaid and Stril Mariner vessels.In addition to replacing the existing DP2 systems for the two vessels, Brunvoll will also replace the current propulsion and thruster control systems, as well as the independent joystick system.The systems will be replaced with Brunvoll's BruCon DP2, BruCon PTC (Propulsion & Thruster Control), and BruCon JS.This will ensure even better…

14 Mar 2024

MAN Energy Solutions Delivers First Ever Ammonia-Ready SCR to Mitsui

Cluster 5 Double Layer SCR (Credit: Man Energy Solutions)

MAN Energy Solutions has announced the production of a massive Cluster 5 Double Layer Selective Catalytic Reduction (SCR) converter to MITSUI E&S.The cluster comes ammonia-ready and is the largest such unit that the company has ever built.Such systems are typically used aboard cruise ships and cargo ships to reduce nitrogen oxide emissions by 90%.“As the very first SCR for an ammonia engine anywhere in the world, this is a historic moment. As the largest, high-pressure SCR we have ever built, this marks a new milestone for our business.

10 Mar 2024

Corvus Energy Develops Data-Driven State of Health Test

Source: Corvus Energy

Corvus Energy has developed a DNV-accepted method for data-driven state of health (SOH) testing.SOH tests for marine battery systems are mandatory and give an overall assessment of the condition, performance and safety of the batteries over time. These tests help determine the battery's capacity, efficiency and remaining life. Using data-driven approaches in these tests enhances accuracy and efficiency in monitoring and maintaining marine battery systems. In addition, the test…

06 Mar 2024

ABB to Deliver Integrated Propulsion System for CCG’s Next-Gen Polar Icebreaker

Polar icebreaker (Credit: Seaspan Shipyards)

Seaspan Shipyards, Canada’s long-term shipbuilding partner for the Canadian Coast Guard (CCG) and Royal Canadian Navy, has awarded ABB a contract to deliver an integrated propulsion system for the first of the CCG’s new-generation polar class icebreakers.The vessel is expected to be one of the world’s largest and most powerful diesel-electric icebreaker when it enters service in 2030, with ABB supplying vessel systems complying with IACS Polar Class 2 requirements for year-round…

15 Feb 2024

Is Stern Tube Damage Declining?

Shaft removal during stern tube repair procedures courtesy of Marine and Industrial Transmissions.
Photo courtesy Marine and Industrial Transmissions

It might be easy to blame EALs, but the ongoing causes of stern tube damage are varied, and possibly declining.Environmentally Acceptable lubricants (EALs) gained market traction with the introduction of US VGP regulations in 2013. Since then, DNV has observed two major trends. The first, starting in 2013 was early life damage, either during sea trials or within the first five years of operation, where aft stern tube bearings typically failed under extreme load conditions. Then from around 2018…

14 Feb 2024

ABB to Equip Nexans’ New Cable Layer with Hybrid Power System

Nexans cable-laying vessel (Credit: Skipsteknisk AS)

ABB has secured an order from Norwegian shipyard Ulstein Verft to supply an advanced power and propulsion system for a new cable-laying vessel (CLV) being built for Nexans.Upon delivery in 2026, the vessel will join Nexans Skagerrak and sister ship Nexans Aurora – also equipped with ABB technology – as the third and most advanced CLV in the Nexans fleet.An integrated system comprising main power generation and distribution, energy storage, and electric propulsion will allow the new CLV to execute its cable laying…

13 Feb 2024

Marine Power R&D Insights: Matt Hart, Wabtec Corporation

Image courtesy Wabtec

Matt Hart, Manager & Platform Leader, Marine & Stationary Power Systems, Wabtec, offers insights on how the megatrends of decarbonization, energy transition and autonomy all inspire and impact the marine power solutions from Wabtec.Matt, to start us off, can you provide insight on the journey to your present position?I graduated from the University of Notre Dame with an undergraduate in Mechanical Engineering and started with General Electric in the Edison Engineering Development rotational program at the Erie…

23 Jan 2024

Chemfleet to Fit 3 More Ships with Berg Upgrade for Fuel Efficiency

(Credit: Chemfleet)

Turkish specialized ship manager Chemfleet has confirmed it would equip three more ships with an in-service Berg Propulsion upgrade after verifying 10% fuel savings with chemical tanker trials.According to Chemfleet, an in-service Berg Propulsion upgrade to control systems onboard the tanker YM Miranda yielded fuel savings of around 10%.Trials following the installation of Berg MPC800M control system onboard the 12,933 dwt IMO II chemical tanker have persuaded Chemfleet to upgrade three additional 6…

22 Dec 2023

Brunvoll Invests in New Production Tech

Figure 1. One of two new machining centers with both milling and latching functions. The machining centers are of 20 meters in length for scale. Illustration: PAMA S.P.A

Brunvoll’s will invest $10m in new production technology: One large machining center for gearbox housings were ordered for the factory in Volda. The other machine on order is a large combination turning and machining center for the factory in Molde. The machines will be delivered by the supplier PAMA S.P.A in Q1 2025. PAMA is an Italian company with a 90-year long history of delivering medium to large machines with high requirements to rigidity and shares the same passion as Brunvoll…

13 Dec 2023

Brunvoll Propulsion Gear on New Fishing Vessel

The new Quantus is designed by Salt Ship Design. (Illustration by Salt Ship Design)

Brunvoll signed a contract with Westcon Yards for the delivery of a wide array of products to the new fishing vessel for owner M.V. Quantus Limited and Peter & J. Johnstone Limited, based in Peterhead, UK. Included is the Retractable Azimuth Combi Thruster. The vessel is designed by Salt Ship Design and will be delivered from the yard by the end of 2025.The Brunvoll delivery for Quantus will consist of main propulsion and gear, the BruCon Propulsion and Thruster Control (PTC) system…

12 Dec 2023

Interview: Juha Kytölä, Director of R&D and Engineering, Wärtsilä

Juha Kytölä, Director of R&D and Engineering, Wärtsilä. Image courtesy Wärtsilä

As maritime faces transcendent changes in terms of decarbonization and automation, Juha Kytölä, Director of R&D and Engineering, Wärtsilä, discusses how this Finnish maritime technology powerhouse is investing in the technologies and facilities that will drive the maritime industry for the coming generation, including insights on its unique arrangement for a future fuel engine testbed onboard Wasaline’s MS Aurora Botnia.To start off, can you give a scope of the Wärtsilä R&D investment?We invest heavily in research and development, about 4.1% of our annual turnover.

01 Dec 2023

Gensets: New Fuels but Perennial Goals

MAN Energy Solutions introduced its auxiliary MAN 35/44DF CD engine in June 2023. mage courtesy of MAN Energy Solutions.

Fuel flexibility may be a key driver for recent developments in gensets, but the perennial goals of lowering CapEx and OpEx remain.Fuel flexibility is one of the pillars of decarbonization that is being embraced by genset OEMs. Fuel efficiency, a second pillar, goes hand in hand with that because new fuels will be more expensive, but these concerns come in addition to the on-going drive to reduce CapEx and OpEx for shipowners.MAN Energy Solutions introduced its auxiliary MAN 35/44DF CD engine in June 2023. It is designed to be future-proof and will be ready for methanol operation by 2026.

23 Nov 2023

Steerprop To Supply Bow Thrusters for Canada’s New Polar Icebreaker

Source: Steerprop

Steerprop has been chosen to supply advanced ice-classed bow thrusters to the Canadian Coast Guard’s new Polar Icebreaker. The ship will be designed and built by Seaspan Shipyards as part of Canada’s National Shipbuilding Strategy.Steerprop will equip the Polar Icebreaker with two arctic tunnel thrusters specially designed to meet the most demanding ice conditions, even without the protection of tunnel grids. This will be Steerprop’s first delivery of this unique ice-strengthened tunnel thruster.

23 Nov 2023

Improving Propulsion Efficiency: Wärtsilä to Retrofit Ten Hafnia Tankers

©Wärtsilä Corporation

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…

16 Nov 2023

VARD and Windward Select Brunvoll Propulsion for New Series of CSOVs

VARD and Windward at Brunvoll’s facilities in Molde. Photo: Brunvoll AS / Jørgen Eide.
From the left, Øystein Aarsæther (VARD), Arnim Von der Lieth (Windward), Bernt Rune Riksfjord (Brunvoll),
Martin Ingjerd (VARD), and Geir Larsen (Brunvoll).

Brunvoll has received an order for the delivery of propulsion and manoeuvring packages for Windward Offshore's new Commissioning Service Operation Vessels (CSOVs). The order is for two vessels, with two additional vessels as an option.Windward’s new vessels will have two propulsion azimuth thrusters in the aft, and two retractable azimuth thrusters and a tunnel thruster in the bow. All azimuth thrusters feature the latest and greatest improvements to meet the increasingly stricter requirements for rapid, safe, and accurate DP operations for SOVs/CSOVs.

14 Nov 2023

Schottel Australia Partners with Fremantle Foundry and Engineering

Source: Schottel

Schottel Australia and propulsion systems repair specialist Fremantle Foundry and Engineering (FFE) have signed a service agreement that will expand the Schottel service network and strengthen OEM-quality repairs for Schottel products in Western Australia.FFE provides expert marine maintenance both onshore in its modern workshops and offshore. The company, which was founded in 1902, is an accredited National Association of Testing Authorities (NATA) facility as well as a DNV-certified fabrication workshop.