Jensen Maritime to design Baydelta’s first hybrid tractor tug; Rolls-Royce technology


Jensen Maritime, Crowley Maritime Corp.’s Seattle-based naval architecture and marine engineering firm, was recently selected to provide the design for Baydelta Maritime’s new 100-foot, Z-Drive (azimuth thruster) hybrid tugboat. It will use Rolls-Royce hybrid technology and represents the first installation of a hybrid system for Nichols Brothers Boat Builders (NBBB), and the first hybrid tug designed by Jensen to enter the construction phase.

Scheduled for delivery in the first quarter of 2019, the tug will feature the same ship assist and tanker escort capabilities of existing Valor class harbor tugs, but with multiple operational modes. The Rolls-Royce hybrid system allows for the vessel to operate direct-diesel, diesel-electric or fully-electric while assisting the large containerships and tankers that operate in US West Coast ports.
This concept will save fuel and reduce emissions, while supplying Baydelta with the same power and vessel characteristics needed for their operations. The flexibility provided by the drive system will allow loitering and transit at up to 7-8 knots in electric-only mode, then a bollard pull of 90, or nine short tons, in combined diesel-electric mode.
The tug will be powered by two Caterpillar C3516 C Tier 3 diesel engines, each rated at 1995 kW at 1,600 rpm, supplied by Peterson Power of Portland, Ore.; and by two Rolls-Royce supplied 424 kW electric motors.The Z-drive system, two Rolls-Royce 255FP units, can accept power from the diesel engines, electric motors and from both power sources.
The electric motors are powered by three CAT C9.3 generators with 300 kW each, which are 480V three-phase at 1,800 rpm, and one harbor generator, a C7.1 150 kW 480V, three-phase at 1,800 rpm. All four generators will be supplied by Peterson Power.
The tug will have eight berths, and the major equipment on board will include a Rapp Marine electric hawser winch and a single drum tow winch. The tug is designed to carry up to 71,000 gallons of fuel and 4,300 gallons of fresh water. It will have a large pilot house providing all-around visibility; a deckhouse with an open feel; a large mess and lounge area; and accommodations for an eight-person crew.
The tugboat will be ABS Load Line classed and compliant with US Coast Guard regulations, as required at delivery.

Sanlorenzo Steps into the Future with Its E Motion Series Superyachts


Superyacht builder Sanlorenzo is taking a big step ahead of competitors with a line of hybrid and diesel-electric yachts it is calling E Motion. The Italian firm announced the new initiative Tuesday at the Düsseldorf Boat Show. Tilli Antonelli, founder of Wider Yachts, is heading up Sanlorenzo’s new E Motion division, which will see its first hybrid SL86 debut in May. The company launched a SL105 Hybrid in 2015, but this is a fleet-wide initiative.
“The automotive world is moving very quickly in the direction of hybrid and electric propulsion,” Antonelli told RobbReport.com. “We don’t want to be any different in the yachting world. We think it’s coming so fast that in five years the value of an ‘old-style’ superyacht might be much lower because of its conventional propulsion system.”
Several superyacht builders, including Antonelli’s Wider, have worked with hybrid systems, but Sanlorenzo’s E Motion takes the commitment to a new level. CEO Massimo Perotti called electric propulsion a “new era for yachting,” adding Sanlorenzo wants to be “the first player in the world.”
The E Motion range will include both displacement hulls, built in steel and aluminum, and its faster planing yachts in fiberglass. The first two SL86 E Motions with hybrid propulsion systems will debut in May and in December. A 44Alloy E Motion, 500Exp E Emotion, and 62Steel E Motion will make their debuts in 2020, while E Motion versions of its 50Alloy, 56Exp, and 58Steel will launch a year later.
Sanlorenzo 44Alloy E Motion.
Sanlorenzo 44Alloy E Motion.  Photo: Courtesy Sanlorenzo
“It doesn’t really matter whether the system is hybrid or electric,” notes Antonelli. “The benefits for the owners are the same.” They include improved fuel efficiency, more usable interior space, and much lower noise and vibration levels. The hybrid system uses smaller diesel engines and battery-powered generators, while the electric-diesel propulsion uses electric motors fed by industrial batteries. Both can operate on ZEM (Zero Emissions Mode) at night, so emission and vibration levels are nonexistent.
Spaces normally devoted to large engine rooms can be used for expanding the yacht’s beach clubs or staterooms. “It can create 30 percent more saved space,” says Antonelli. “On the 62Steel, you gain almost a whole deck with the space savings. The benefits of these engines make these systems a no-brainer compared to conventional propulsion systems.”
Sanlorenzo 62Steel E Motion hybrid superyacht
Sanlorenzo 62Steel E Motion. 
Perotti said the shipyard is cooperating with an unnamed strategic partner to develop full electric jet tenders. He also said it had entered into a cooperative agreement with Tesla for next-generation batteries.
“We’re seeing all the big marine engine manufacturers investing heavily in this technology,” says Antonelli. “The future is here.”

Adler Suprema’s Hybrid Marine Solutions : a transatlantic crossing on a single tank of fuel



Adler Yacht, headquartered in Switzerland with construction facilities in Italy, is now revealing full details on its ground-breaking propulsion and technology systems, which give a deeper look into the yacht’s foundations and explain why the company’s new take on yacht building is so revolutionary.
The Adler Suprema is the smart yacht for the next generation of owners who don’t know the meaning of the word “compromise”. As well as pedigree interior and exterior design from Nuvolari-Lenard, one of the world’s most celebrated superyacht designers, the Adler Suprema offers pioneering propulsion and technology solutions that have broken multiple barriers in yachting.
The Suprema 76-foot (23.11-metre) motoryacht is the first in its kind to be built with a Hybrid Marine Solutions (HMS) hybrid propulsion system. The semi-displacement flybridge is also the first yacht in its category to be constructed from carbon fibre, and it is the first hybrid yacht in the world to have been built through the collaboration of expert teams in the automotive, aviation and marine sectors.
Adler’s background in the aviation industry has rooted its core principles in reliability, redundancy and safety, as well as provided an appreciation for the importance of aerodynamic efficiency. The naval architecture of the Adler Suprema’s RINA CE-A certified hull form was developed over four years, with vigorous finite element analysis optimization involving computational fluid dynamics simulations, followed extensive tank testing in Vienna.
The result is a yacht that provides the best possible combination of performance and seaworthiness, with a degree of investment in research and development that is practically unheard of in its category.
A uniquely efficient solution
Assisted by first-rate naval architecture, the Adler Suprema’s HMS (Hybrid Marine Solutions) hybrid propulsion system provides owners with optimal performance at a range of speeds and fuel efficiencies.
The HMS system consists of twin Caterpillar C18 1,150hp diesel engines, two ATE 100kW e-Units and a 170kW LiPo battery. The e-Units are used to control the system’s operations and transitions between propulsion modes. They comprise a combustion engine coupled to an electro-motor/generator combination.
Test results show that the yacht can offer fuel savings of up to 30-50% compared to standard diesel propulsion systems. At eight knots, the Suprema consumes just 12 litres of fuel per hour. Taking the speed up to 14 knots with hybrid propulsion, this figure is just above 100 litres an hour.
Whether owners are seeking silent and sedate propulsion or a fast passage to port, the yacht delivers. The Suprema can reach speeds of up to 11 knots powered silently by the electric motors alone, while the top speed achievable under normal diesel propulsion is 30 knots.
The Suprema’s potential cruising range is equally impressive. With a top range of up to 3,400nm at eight knots, owners could comfortably carry out a transatlantic crossing on a single tank of fuel.
For those who enjoy the peaceful sounds of nature afloat, the LiPo battery can provide a full day’s onboard amenities on a single charge without the need to turn on diesel engines or a generator, and experiencing the noise, fumes and vibration that this provides.
Seamless transitions between propulsion modes
A unique feature of the Adler Suprema is the seamless transition between operational modes of the HMS hybrid propulsion system.
“The ATE e-Units are custom-designed, high-efficiency asynchronised electric units that can work either as a motor or as a generator. They are installed on the shaft between the Caterpillar engines and the gearbox, separated by clutches. Thus, we can use the e-Units as very powerful generators for super fast charging while the propellers are not rotating. It takes less than an hour to fully recharge the hybrid batteries – at only about 23 liters of diesel,” says Philipp Pototschnik, CEO of Adler International. “The design also allows the Caterpillar engines to work in twin diesel mode with the e-Units shut off, without loss of efficiency. What we are particularly proud of is that with this system, we can seamless switch between the propulsion sources: electric, twin diesel or hybrid.- even under full acceleration”.
The default propulsion mode of the yacht controls fully automatic whether it uses electric, hybrid or twin diesel propulsion. At the highest speeds available on the Adler, a power boost mode automatically kicks in, drawing on power from all available systems, to maximize the top speed by a further 1.5 knots.
Should the need arise, the captain may also manually select the eco boost mode to reduce fuel consumption by adding electric power to propulsion, or the generator mode, which commands the e-Unit to load the lithium battery while traveling at three optimum charging speeds maintenance and running hours of the engines are reduced due to our smart Hybrid Marine System. In hybrid mode we alternately run only one engine, in electric there is none. The system is perfect for long slow cruises such as channels or island hopping, but can also go fast.
As the yacht is accelerated, it will automatically shift where it is drawing its power from, transitioning “through” the different power sources, without any need for manual selection from the captain. There is zero interruption in acceleration and the transition cannot be felt by the captain or passengers, with the only indication being the monitor’s display of power source.
The technology of tomorrow’s superyachts
As well as superior performance on the water, the Adler Suprema delivers state-of-the-art technology that is usually reserved for much larger luxury yachts. A lot of innovations have made the creation of this truly superlative yacht possible, with a high degree of automation and integration of the onboard technology.
From a practical perspective and to give peace of mind, the Adler Suprema is fitted with remote control of all operational systems, from the entertainment to bilge pumps, so owners and captains can feel at ease even when they are not on board. There are nine cameras fitted across the yacht, including a FLIR night vision system, which assist with manoeuvring as well as monitoring.
As well as bow and stern thrusters, joystick controls and a dynamic positioning system mean that even the toughest of manoeuvres can be carried out easily. For those who are particularly security conscious, a high-tech keyless system has been integrated for door access as well as helm controls, using cutting-edge fingerprint technology.
Of course, yachting should also be about enjoyment. Adler’s team, alongside Nuvolari-Lenard, designed a number of creature comforts into the Suprema’s specification, to ensure that guests receive an experience they would expect of a superyacht, but fitted into a smaller package.
Under-floor heating has been fitted in the main salon and cabin heads, while cup coolers integrated into the cockpit’s armrests provide an unexpected luxury touch. On the exterior, the stern’s swimming platform can be lowered into the water and the foredeck features a Jacuzzi. Private glass technology has been used to give a little extra privacy to the interior while in port, and the main salon has a 92-inch rolling AV screen integrated into the ceiling.
While it’s clear that the Adler Suprema has chosen to define its standards not by those other vessels in its size range, but by tirelessly searching for the very best solution, some of the most interesting surprises come from its technical progress rather than its luxurious touches.
“We are very proud of what we have achieved in the Adler Suprema,” adds Pototschnik. “This is a yachtsman’s vessel, and we have done our utmost to exceed expectations wherever possible, drawing on expertise from outside of yachting to really take things to the next level. It sets the standard where others will no doubt follow.”






Wärtsilä HYTug Meets Environmental Demands for New Brazilian Port



The technology group Wärtsilä has signed a memorandum of understanding (MoU) with Petrocity, the parent company of the new port facility being built in the Brazilian city of São Mateus-ES, to develop a harbour tug design. The prime consideration is to maximise the ecological operational sustainability of the vessel since the environmental demands of the new port are among the most stringent in the world. For this reason, the design will be based on the recently launched Wärtsilä HYTug, which features hybrid propulsion and energy storage using batteries.
The Wärtsilä HYTug emphasises environmental sustainability, operational efficiency, and lower fuel consumption than is possible with conventional tug designs. The ‘first-of-its-kind’ fully integrated hybrid power module combines engines, the energy storage system, and power electronics optimised to work together through a newly developed energy management system (EMS). It marks a new frontier in marine hybrid propulsion.
The fuel efficiency of this design has the added benefit of reducing exhaust emission levels. Furthermore, when operating in ‘green’ mode, it is unlikely that there will be any visible smoke from the Wärtsilä HYTug since the load is being picked-up by the batteries. At the same time, the noise level of the tug will be notably reduced.
“The Wärtsilä HYTug will change the landscape of the tugboat market as battery usage significantly increases environmental sustainability and operational efficiency, while at the same time greatly reducing operating costs. It represents further evidence of Wärtsilä’s leadership position in sustainable and energy efficient technologies,” says Marine Solutions' Sales Manager, Mário Barbosa. 
“Green port operations are completely aligned with Petrocity’s corporate philosophy and values. We look forward to working with Wärtsilä in developing the kind of harbour tug that meets the criteria that have been established for this project. This will be the first of many others in a huge logistics project which aims at the regional integration of the Espirito Santo, Minas Gerais and Bahia states. It represents a definitive guarantee of the interiorization of the economy in the north of Espírito Santo,” says Mr José Roberto, CEO Petrocity.
The new hybrid vessel features a very distinctive outlook while providing the power and manoeuvrability for practical tug operations. The overall design has been optimised for low hull resistance, high towing and escort performance, efficient sea-keeping, crew safety and comfort, as well as for easy maintenance.
Wärtsilä in brief
Wärtsilä is a global leader in advanced technologies and complete lifecycle solutions for the marine and energy markets. By emphasising sustainable innovation and total efficiency, Wärtsilä maximises the environmental and economic performance of the vessels and power plants of its customers. In 2016, Wärtsilä's net sales totalled EUR 4.8 billion with approximately 18,000 employees. The company has operations in over 200 locations in more than 70 countries around the world. Wärtsilä is listed on Nasdaq Helsinki. www.wartsila.com

Teekay's next gen shuttle tankers will burn LNG and recovered VOCs

JANUARY 9, 2018 — Four next generation shuttle tankers on order for Teekay at shipbuilder Samsung Heavy Industries (SHI) feature a broad range of Wärtsilä's latest technology innovations that are expected to reduce annual emissions of CO2 equivalents by more than 40 percent, compared to conventional shuttle tankers.
In addition to operating on Liquefied Natural Gas (LNG) as the primary fuel, the ships' dual-fuel engines will also be able to run on a mixture of LNG and recovered Volatile Organic Compounds (VOC) – the gas evaporating from the oil cargo tanks during loading.
By utilizing the recovered VOC as fuel rather than venting it to the atmosphere, the harmful emissions will be eliminated and the ships' bunker needs will be significantly reduced.
The concept also means that NOx emissions from the engines' exhaust will be reduced by more than 80 percent, SOx emissions will be almost entirely eliminated, while particulate emissions will be reduced by more than 95 percent.
These environmental benefits are matched by equally important economic advantages, with a significant reduction in fuel consumption compared to conventional solutions.
"Together with Teekay, we have developed a concept that takes the shuttle tanker sector into a new era, and which is further evidence of Wärtsilä's ability to transform shipping by developing and utilizing the very latest technologies," says Roger Holm, President, Wärtsilä Marine Solutions. "These ships will have tremendous operational flexibility with unmatched maneuevring capability, and will achieve what all operators are striving for today, namely optimal economic and environmental performance."
"This new shuttle tanker design will set new standards for both fuel consumption and CO2 emissions," says Terje Rusdal, Project Manager at Teekay.
Among the many innovative features of the design is the Wärtsilä Hybrid system, on which the power distribution will be based. The Hybrid system uses batteries for fuel savings, peak load shaving, and added overall system redundancy. This directly impacts the main machinery, resulting in fewer running hours with correspondingly lower maintenance time and costs.
Wärtsilä's broad scope of suppy also includes the full electric and automation system, which includes the Wärtsilä Low Loss Hybrid (LLH) system and batteries, the Wärtsilä LNGPac fuel storage and supply system, the Wärtsilä VOC system for recovering and liquefying the VOC with a storage and supply system, Wärtsilä 34DF dual fuel gas engines, the fuel mixing system with liquid VOC and LNG as the main fuel for the engine, gas turbines to handle the surplus gas, Wärtsilä cargo and ballast pumps and a Wärtsilä inert gas generator.
Also included in Wärtsilä's integrated solution for this vessel concept is Eniram's Vessel Performance Management system. Eniram, a Wärtsilä company, will provide a data collection platform having the capabilities to optimize the vessel's operations, while also providing the owners with analytics and reporting. The Performance Management system ensures that the full potential of the vessel as well as the fleet, will be utilized.
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