Propellers News

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.

Brunvoll has signed a contract with Myklebust Verft shipyard for the delivery of a thruster package to REM Offshore’s new energy subsea construction vessel (ESCV).The contract is for one vessel with an additional vessel as an option.Brunvoll will deliver a thruster package consisting of two propulsion azimuth thrusters, two retractable azimuth thrusters, and a tunnel thruster.One of the retractable azimuth thrusters is a newly developed and more compact version of Brunvoll’s traditional azimuth combi thrusters…

Stena’s new Ro-Pax vessel, Ala’suinu, equipped with Wärtsilä propellers has received DNV’s Silent(E) notation, issued to vessels that demonstrate the ability to effectively reduce emissions of underwater radiated noise.Technology group Wärtsilä has designed and delivered controllable pitch propellers for Stena’s new Ro-Pax vessel, Ala’suinu, which has successfully completed sea trials.Following these sea trials, Ala’suinu became the first Ro-Pax vessel to fulfil the DNV Silent(E) notation…

Brunvoll has signed a contract with Vard for the delivery of a comprehensive propulsion and maneuvering system for Cyan Renewables' new Service Operation Vessel (SOV).The vessel will have the first azimuth propulsion thrusters from Brunvoll with an 8-degree tilted propeller and nozzle, for enhanced performance during dynamic positioning operations.The delivery for the new SOV consists of two azimuth propulsion thrusters, two retractable azimuth thrusters, a tunnel thruster, and…

SCHOTTEL will equip Guangzhou Port Group’s latest e-tug with two RudderPropellers type SRP 360 in the LE-Drive variant. The new harbor tug measures 37.9 x 10.5m and will be mainly used for berthing assistance, escorting and towing in the Port of Guangzhou, China. Each SRP has an input power of 1,500 kW and a propeller diameter of 2.2m. The 360-degree steerable thruster combines maximum maneuverability and bollard pull with outstanding efficiency during free sailing, providing…

Damen Naval has selected Kongsberg Maritime Sweden to deliver controllable pitch propellers and shaft lines for the four Anti-Submarine Warfare (ASW) frigates for the Netherlands and Belgium.As part of this contract, Kongsberg will supply four shipsets of its controllable pitch propeller systems and associated equipment including blades, hubcaps, hubs, and shaft lines.The four ASW frigates will replace the current Karel Doorman-class multi-purpose frigates. They will be deployed for a wide variety of tasks, with anti-submarine warfare as their main purpose.

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…

The International Transport Intermediaries Club (ITIC) has highlighted the importance of robust vessel design reviews and related insurance coverage throughout the construction process following a recent dispute between a naval architect, a shipowner and a shipyard regarding a vessel’s operational performance post-delivery.The vessel, a 24-metre catamaran servicing the offshore oil and gas industry, faced considerable operational limitations. This was attributed to unexpected vibration issues in the vessel's rudders…

Dry bulk shipping company Pacific Basin has decided to apply a sustainable graphene-based propeller coating XGIT-PROP, developed by Canadian company GIT Coatings, across its entire fleet.Following successful application and observing positive results on one of its Supramax dry bulk vessels, Pacific Basin has started the rollout of XGIT-PROP across 40 vessels scheduled for dry dock maintenance in 2024. This decarbonisation initiative marks the largest adoption of graphene-based propeller coating in the dry bulk segment.Sanjay Relan…

Schottel has marked the symbolic start of construction for the expansion of its rudder propeller factory in Dörth, with the construction already advancing towards the planned commissioning in 2025.Schottel is expanding its rudder propeller factory by adding a logistics center measuring around 4,000 m2.As the official ground-breaking ceremony was delayed, it has now taken place symbolically against the backdrop of the shell construction that has already begun.The total investment volume amounts to €9.5 million…

SCHOTTEL is to equip six new ASD tugs of the Turkish Med Marine Group with the SCHOTTEL RudderPropeller (SRP). The new vessels will be built by Med Marine’s Ereğli Shipyard and will be available in 2025 to meet the constantly growing demand for Med Marine tugs. A total of 12 SCHOTTEL RudderPropellers in the SRP 360, SRP 430 and SRP 490 series will be built for the new vessels by the German manufacturer of marine propulsion systems. The new tugs will cater for a range of different bollard pull requirements in the 50-…

The PSA Wayra ASD tug will soon enter service for PSA Marine Peru, a wholly owned subsidiary of PSA Marine (Pte) Ltd, as the first tug with a hybrid drive system on South America’s west coast. Hong Kong-based Cheoy Lee Shipyards has built the PSA Wayra on the RAmparts 2400W design from Robert Allan Ltd. The tug is propelled by SCHOTTEL RudderPropellers featuring patented SYDRIVE-M technology. This mechanical hybrid solution without the costly complexity of common hybrid technology reduces both the vessel’s maintenance costs and its fuel consumption.

The first three new Walk-to-Work Commissioning Service Operation Vessels (CSOVs) built by the Dutch Damen Group for Windcat Offshore will be powered by full propulsion packages from SCHOTTEL. With vessel sizes of 87 metres by 20 metres, each CSOV will come with high-comfort accommodation for 120 passengers, and will provide a large warehouse and deck as well as various recreational areas and a hospital. The vessels will be powered by hydrogen and use a DP-2 control system. The…

ABS is joining Mencast Marine (MMPL), the Singapore University of Technology and Design (SUTD), and the National Additive Manufacturing Innovation Cluster (NAMIC) on a project to manufacture and class a 3D-printed propeller.The collaborative project builds upon a memorandum of understanding (MOU) signed by ABS and MMPL that is focused on additive manufacturing (AM), also known as 3D printing, for critical maritime components.The new initiative has an objective to 3D-print a ship propeller using Wire Arc Additive Manufacturing (WAAM) techniques with a goal to achieve high-quality…

Kongsberg Maritime has won a contract to upgrade the propulsion systems on five ro-ro passenger ferries for Italian operator Moby. The vessel upgrades will together reduce CO2 emissions by more than 30,000 tons per year.Moby operates a fleet of ro-ro passenger ferries, operating in the western Mediterranean, including routes between the Italian mainland, Sicily, and Sardinia.Three of the ships, the Moby Vinci, the Sharden, and the Moby Aki, will all receive a Promas Lite propulsion system, which combines rudder and propeller into one propulsion unit.

When on route to the Gulf of Mexico area, a fully laden bulker hit a buoy off the coast of Colombia damaging the propeller blades and aft seal assembly. A close detailed inspection revealed a missing rope guard, the entire seal box being distorted and dislocated from the stern tube and all five propelled blades damaged.Trained and certified UPE-dive technicians were mobilized, together with special habitat and relevant equipment, from AEGIR-Marine’s Panama branch.A complete new split type seal assembly was ordered and transferred, from stock, to location.

The new Orca Class heavy-lift vessels being built at China's Wuhu Shipyard for the Jumbo-SAL-Alliance will be propelled by SCHOTTEL ControllablePropellers (SCP).The four-bladed controllable pitch propellers type SCP 129 will feature an input power of up to 8,810 kW and a propeller diameter of six meters.Jumbo-SAL-Alliance is a commercial joint venture between German shipping company SAL Heavy Lift and Netherlands-based Jumbo Shipping. Their new Orca Class, which includes four firm and two optional vessels…

Sweden’s Erik Thun Group has unveiled its next generation battery-hybrid, dry cargo vessel series being built at Shipyard Ferus Smit in the Netherlands.The Lake Vanern Max is hybrid, with a battery pack for peak shaving and power smoothening, reducing the reliance on auxiliary engines for electricity generation. The vessel is designed to stay at anchor without using auxiliary engines. Shore connection enables clean and silent port operations and allows the vessel to shut down all engines onboard…

Norway's HAV Group has signed the final contract to design and equip another methanol-fuelled offshore wind service operation vessel (SOV) for the Danish offshore vessel owner ESVAGT.HAV Group said Monday it had signed the final contract with ESVAGT’s chosen shipyard, Cemre Shipyard in TurkeyHAV Group will deliver both the ship design and an integrated equipment package, including the propulsion system, engines, propellers, and positioning system. The total contract value for HAV is around approximately NOK 200 million (currently around $20 million).

Marine propulsion specialist Schottel will equip four Commissioning Service Operation Vessels (CSOVs) being built by the Norwegian VARD Group with full propulsion packages.The package per vessel consists of two SCHOTTEL Dynamic RudderPropellers type SRP 460 D, one SCHOTTEL Retractable RudderPropeller type SRP 380 R, and two SCHOTTEL TransverseThrusters type STT 5. The vessels are being built for Norwegian offshore wind vessel owner Edda Wind.“Being part of the Edda Wind fleet fills us with great pride,” says SCHOTTEL CEO Stefan Kaul.

Wärtsilä has delivered propulsion efficiency devices to two tankers owned by Vitol.The vessels, Elandra Sea and Elandra Star, managed by Latvian operator LSC Group, had tailored Wärtsilä EnergoFlow and EnergoProFin systems installed during summer 2022.EnergoFlow is a pre-swirl stator that creates an optimal inflow for the propeller, reducing fuel consumption and emissions in all operating conditions. The EnergoProFin is an energy saving propeller cap with fins that rotate together with the propeller.

New Zealand-based Propspeed's underwater foul-release coating system has received type approval from Bureau Veritas following significant third-party testing.Marine materials and equipment certification is the review and testing process that ensures ships’ component parts conform to the technical standards established by regulatory bodies. Bureau Veritas provides certification services for shipyards, suppliers and manufacturers, helping keep ship materials and equipment reliable for shipowners.

Norwegian firm Brunvoll has secured a contract to deliver propulsion and manoeuvring packages for Purus Wind's two new Commissioning Service Operation Vessels (CSOV).Each vessel will be outfitted with two azimuth thrusters for propulsion, and two retractable azimuth thrusters and a tunnel thruster for manoeuvring The scope of supply features also Brunvoll's Propulsion and Thruster Control system, Brucon PTC."The offshore wind market will be an important segment for Brunvoll in…