Propulsor News

If the global commercial fleet reduced its speed by 10%, it would reduce underwater radiated noise by 40%, but nothing’s ever that simple.The main thing holding the shipping industry back from reducing its underwater radiated noise (URN) is not a lack of appropriate technology. It’s argued that many of the technologies being implemented today to reduce fuel consumption also reduce noise. So, the noise reductions could essentially come at no net cost to the shipowner, but there’s a lack of regulation and a lack of targeted incentives…

Australian shipbuilder Incat Tasmania is setting a record for the largest, lightweight battery electric ship in the world with a new 130-meter (427-foot) ro-pax ferry under construction for South American customer, Buquebús.The aluminum ferry will be the first fully electric vessel in South America when delivered in 2025, operating between Argentina and Uruguay. It will have a capacity for 2,100 passengers and crew and 225 cars and will feature a duty free shop of over 2,000 square meters (21…

HydroComp is a well-established, small engineering firm focused on hydrodynamic and propulsion system simulation, providing design tools for engineers and naval architects to focus on vessel performance, including emissions. Don MacPherson, HydroComp’s long-tenured Technical Director, discusses the impacts of tightening emissions regulations, with insights on maximizing new vessel designs and refits.Don, maritime has been in the crosshairs of regulators to reduce emissions. What do you see as the top new regulatory issues that are impacting ship and boat design…

ABB said it has secured a contract with the Spanish state-owned Navantia shipbuilding company to retrofit the Spanish Navy flagship Juan Carlos I with an electrical propulsion system based on dual ABB Azipod units. Due completion in 2025, the project is the first of its kind on a naval ship.The contract follows a study undertaken by ABB in 2020 to determine the feasibility of installing new propulsors on the ship. The study identified ABB Azipod as a solution to meet the vessel’s requirements for reliability…

The propulsion system is a critical part of all patrol craft. There are different types of propulsion systems available for use on these craft, and selecting the “best” one for the application at hand is not to be taken lightly. You will note that I used “best” in quotes, which I’ve done to hint at the subjective nature of the decision. Propellers, waterjets, sterndrives, outboards – they are all commercial off the shelf technologies which are mature and used in different patrol craft applications.

General Atomics Electromagnetic Systems (GA-EMS) said on Friday it has been awarded a task order from Naval Surface Warfare Center, Carderock Division (NSWCCD) to conduct a manufacturing assessment of several new propulsor bearing concept designs for U.S. Navy submarines. The task order is under the Propulsor Demonstration Hardware (PDH) Indefinite Delivery, Indefinite Quantity (IDIQ) contract previously awarded to GA-EMS.“Manufacturing feasibility evaluations such as this are crucial steps in determining whether a new concept design will deliver greater performance…

Companies planning a new ferry build should focus on the Total Cost of Ownership (TCO) instead of kW-power, in order to optimize costs, Steeprop, a designer and manufacturer of azimuth propulsion systems, said.Choosing the propulsion unit based mainly on Capex, for example, will most likely increase costs in the long run, adding that a ferry owner can save more than two million euros over a 15-year period by concentrating on the TCO."The traditional way of handling the procurement of propulsion systems…

As naval architects and marine engineers we are familiar with the design spiral. While design is not truly a spiral, we use the concept to remind ourselves that all pieces of a ship design interact. The design spiral is not a standard figure and can be simplistic or overcomplicated.A Google search image summary provides dozens of interpretations, all investigating different variables, with the only commonality that all spirals start with the “mission” variable.Figure 1 is an old…

Conducting a sea trial is a necessary step upon delivery of a ship. This activity not only documents and validates anticipated ship speed and power, but if done correctly also provides performance data that can be useful for design purposes. The same holds true for underwater vehicles in general and thrusters in particular. However, while gathering data may seem easy, extracting useful trial data for typical UVs can often be pretty challenging.We should start with an understanding of the system – the Vehicle-Propulsor-Drive system.

ABB Marine & Ports said it has developed a new Blended Learning program for Azipod propulsion in response to customers’ requests for safe and efficient training of crews during global travel restrictions.The new program combines traditional classroom training with instructor-led lessons via conference call, assignments and e-learning available on the ABB Marine Academy digital learning platform; remote simulator training developed with support from the Aboa Mare Maritime Academy and Training Center in Turku…

ROV manufacturer Forum Energy Technologies has completed the construction of what it says is a highly advanced submarine rescue vehicle (SRV), which may be utilized to extract submariners from distress situations.According to Forum, the LR-class SRV is capable of rescuing up to 17 people at a time and operate at depths of up to 600 meters. "The new model has increased power and an advanced auxiliary thruster control system that allows for speeds of up to four knots, enabling it to operate in high currents.

Inland river pushboats operate in a harsh environment. Transiting our rivers, bays, lakes and inland waterways, these vessels push barges between hubs of commerce. Swift currents, trash and debris, heavy traffic and narrow waterways are day-to-day realities for these vessels and operators.Pushboats have two typical modes of operation: steady-state (long haul running) and transient-dynamic operations (backing, maneuvering and acceleration). Unlike almost any other vessel type,…

General Atomics Electromagnetic Systems (GA-EMS) said it has been awarded a developmental contract by Naval Surface Warfare Center Carderock Division (NSWCCD) to provide manufacturing design drawings, engineering, fabrication, inspection, and assembly of prototype propulsor, shafting and bearing components as well as the equipment needed to support propulsor research and development, testing and evaluation.GA-EMS will work with NSWCCD to develop new propulsor components for both surface ships and submarines.

Rolls-Royce and the Defense Production Act Title III office will invest millions of dollars to upgrade the company’s capability and capacity for U.S. Navy ship propulsion components in its facility in Pascagoula, Miss.The DPA Title III office has already agreed to invest $22 million for equipment, with Rolls-Royce making an additional investment for building improvements, supplemented with support from Jackson County and the state of Mississippi.Naval components manufactured by Rolls-Royce at Pascagoula include controllable-pitch propeller systems, fixed pitch propellers, and water jets.

Dr. Dirk Jürgens heads R&D at Voith Turbo Marine, a part of the family owned Voith conglomerate which employs more than 19,000 people in 60 countries. Voith Rudderpropellers were chosen as the propulsion system for the three new Staten Island Ferry vessels, and Dr. Jürgens discusses the evolution of the system.The ‘Voith’ name is a well-known one in the maritime industry, but to start please provide an overview of the product and service you offer to the maritime industry.The…

While nothing lasts forever, the cruise industry – and particularly the ‘expedition’ cruise sector – remain on a historic run with no indication of a near-term slowdown.The leisure travel sector, of which expedition cruising is a part, offers numerous possibilities for delivering new “experiences” unlike industrial shipping businesses (or even conventional ferry and passenger transport), which can only grow as fast as the demand in a particular sector.Though there is no precise definition of “expedition”…

With the United States and China about to start their respective offshore wind build-ups, grid operators wondering about the efficiency of their turbines or the emissions-areas compliance of their wind-service vessels will be warmed to know there’s someone they can talk to. Yaskawa’s The Switch — a Japanese industrial giant’s European environmental tech business — is offering one-stop wind-energy shopping. As with shipping, you can order permanent magnet generators, drives and converters for your wind turbines. Take heart.

The European Investment Bank (EIB) has signed a EUR 14 million venture loan agreement with Sweden’s Cimco Marine AB to co-finance its innovation and growth investments.As per the unsecured credit facility agreement, the EIB will finance up to 50 percent of Cimco’s development of a new family of diesel outboard engines, inter alia a 3 liter, 6- cylinder twin turbo BMW diesel engine with a number of power outputs between 200 hp and 300 hp."The total facility is split into three tranches of EUR 4 million (A), EUR 4 million (B) and EUR 6 million (C) respectively," it said.The availability period for the facility is 30 months from signing, during which Cimco can meet all milestones for tranches A-C.

With the United States and China about to start their respective offshore wind build-ups, grid operators wondering about the efficiency of their turbines or the emissions-areas compliance of their wind-service vessels will be warmed to know there’s someone they can talk to. Yaskawa’s The Switch — a Japanese industrial giant’s European environmental tech business — is offering one-stop wind-energy shopping. As with shipping, you can order permanent magnet generators, drives and converters for your wind turbines. Take heart. The lingo is the same.

Swiss-Swedish tech giant ABB  is to supply power, automation, propulsion and digital systems for the second icegoing cruise ship to be built for Lindblad Expeditions by Ulstein Verft shipyard.Destined to take exploration cruise guests sustainably and safely on voyages deep into remote polar regions, the Lindblad Expeditions Holdings, Inc. vessel will be built by the Norwegian yard Ulstein Verft to an Ulstein Design & Solutions design as a sister ship to National Geographic Endurance, whose construction is underway.As before, the latest ship will have capacity for 126 passengers in 69 luxury guest cabins. The vessel will join the Lindblad fleet in late Q3 of 2021…

From the standpoint of vehicle propulsion physics, an unmanned underwater vehicle (UUV) is little different from your personal ski boat or a tanker. It shares the Vessel-Propulsor-Drive system model, which allows a Propulsor to convert Drive energy into thrust for the purpose of moving a Vessel. The basic principles of thrust equilibrium and motion are common to all three, as are the translation of rotational energy into axial thrust by the central element of the system – the…

ABB will deliver a comprehensive scope of power, automation, propulsion and digital solutions for the new Lindblad Expeditions Holdings, Inc. vessel that will take passengers on exploration cruises in remote polar areas. Designed with a focus on safety, environmental sustainability and comfort, this ice-going vessel will be equipped with ABB’s power and automation solutions, as well as two Azipod DO propulsion units. ABB is the only supplier of azimuthing electric podded propulsor systems of sufficiently high ice-going class able to meet the owner’s requirements.

A primer on the way forward for alternative fuels for marine propulsion. By now, many of us have been passed by a garbage truck, taken a ride on an airport bus or hailed a taxi cab that is clearly labeled by their respective marketing departments that these vehicles are powered by clean burning natural gas. Even now in our own maritime industry, some trendy operators are looking to make the case for liquefied natural gas (LNG) propulsion systems, others are opting for hybrid-electric solutions, and some are even aiming for full electric configurations.