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Cruise completely silent and emissions-free in an eco-tender with MG batteries

Imagine you’re the very happy owner of a 50m Perini Navi sailing yacht, but over the years your needs have evolved. It’s not so much that you want a bigger boat, you’re longing for flexible cabin space for your guests and something more than a conventional RIB (rigid inflatable boat) to explore closer inshore to pursue your hobby of nature photography.

You purchase a vessel with the same graceful looks, quality feel and luxurious comfort as the mother ship, that provides additional accommodation and can operate independently as a 25m extension of your sailing yacht. It’s no ordinary tender, it’s an eco-tender, designed and built with a super yacht mentality with amenities and technologies to match.

For one, it comes with a sophisticated hybrid propulsion system developed by Siemens, which provides four operational modes:

  • Diesel mode: twin MAN diesel engines (2 x 1213 kW) power two Hamilton waterjets for a maximum speed in excess of 30 knots.
  • Hybrid mode: one engine drives its neighbouring waterjet and also serves as a generator for an e-motor to power the other waterjet.
  • Diesel-electric mode: a 130 kW generator supplies electricity for two e-motors to drive the waterjets.
  • Zero-emission mode: a 2 x 70 kWh MG RS Series battery bank powers both waterjets via the e-motors at around 8 knots for up to an hour.

Although close attention has been paid to minimising noise in all propulsion modes and keep contractual sound levels below 55dB throughout, it’s the last mode that allows you to cruise at low speed in marine parks or other environmentally sensitive areas, completely silent and emissions-free. Honestly, what more could you possible want?

 

Components used

  • 2 x MAN 1213 kW diesel engines
  • 2 x Siemens 150kW electric motor
  • 1 x Siemens Custom 135 kW generator
  • 2 x Hamilton HM531 waterjet
  • 2 x 10 RS Series battery modules (2 x 70 kWh)
  • 1 x MG Master HV

 

 

 

Preserving Venice by boarding a hybrid vaporetto with MG’s batteries

When visiting the beautiful city of Venice there are to ways to get around: on foot or by water. In case the former is no option, a vaporetto is the way to go. It’s Italian for water bus and a large fleet makes up a public transport network for the city and province, transferring hundreds and thousands of passengers each day, from the mainland across the lagoon, through the canals and to the nearby islands.

The increase of tourists and therefor transportation has a dangerous impact on the delicate environment of the lagoon in general and the canals in particular, with many precious historic buildings on their banks. The constant navigation and frequent manoeuvring generates a lot of waves and washing water, which in turn leads to progressive erosion of their foundations, draining them of sand and clay.

Operating conditions of a vaporetto are very particular. Due to the many stops, congested traffic, varying speed limits and timetable optimisation their navigation pattern show high acceleration and deceleration performances. The heavy sequence of stop-an-go transitions requires a very irregular power supply. When supplied directly by a generator, this would lead to high diesel consumption and high exhaust emissions.

Enter Liuto: an acronym for Low Impact Urban Transport water Omnibus. It’s a vaporetto with a low resistance hull and a hybrid energy solution, designed around two decades ago. The 300kW Siemens propulsion system used to be powered by lead-acid battery pack, which in turn was charged by a diesel generator running at constant speed. This way the engine could operate at its optimum efficiency level, minimising fuel consumption, pollutant emissions, vibrations and noise.

At the time the hydrodynamic impact was reduced by the optimised hull and propeller, while the hybrid energy solution was a good compromise between technical, economic and environmental requirements. Recently its lead-acid battery bank has been upgraded to MG’s RS batteries, two strings of eight modules each, controlled by a HV Master. Together they operate as peak power supply and energy buffer, under very high but short charge/discharge power levels.

This is what our RS Series excel at. Compared to traditional lead-acid batteries these lithium-ion modules can take in and push out a large amount of power in a short time. Liquid thermal management keeps the battery cells on temperature, to improve performance and extend cycle life. A redundant BMS, a unique cell-to-cell propagation protection and a built-in fire suppression mechanism take safety to the next level. As an added advantage they’re compact and lightweight.

Compared to steel or aluminium vessels with traditional propulsion systems Liuto is a beautiful example of a more efficient, more economic and more ecological solution even in a challenging application such as urban water transport. It generates less wave motion pollution, less air pollution and increases comfort for all passengers. Now it’s ready to serve another decade while protecting the delicate and valuable context of Venice and its lagoon, for both tourist and inhabitants alike.

Components used

MG’s safe and powerful solutions at the Electric & Hybrid Marine World Expo 2019

From June 25-27 we’re at the Electric & Hybrid Marine World Expo 2019, with a range of safe and powerful solutions we’re very excited to present to you.

Sealegs charges into the future with amphibious craft on renewable energy

Sealegs is a world leaders in amphibious crafts, designed and developed to take all the hassle out of boat launching and retrieval. The system simply drives from a storage location, down a boat ramp or beach and into the water. Once afloat, the wheels lift up out of the water to be stored against the hull, and the boat is used as normal.

The company has been driving the amphibious boating revolution since its start in 2001. The very first versions had electric motors driving the wheels, while across the rest of its models hydraulic propulsion is powered by a petrol engine. But the E4 combines high-torque brushless electric motors with MG’s high density 7kWh lithium battery technology. In many ways it may be the best Sealegs craft yet.

Without a petrol engine roaring the E4 is quieter, but runs faster and longer than conventional models. With a standard 150hp outboard it achieves 40 knots, while it drives for around 1.5 hours on a land, depending on speed, load and terrain. Performance is further increased by regenerative braking and outboard charging. All the usual safety features, such as emergency braking, are included.

Without having to accommodate a petrol engine, there’s more flexibility to house the 51 V 7 kWh lithium ion battery, which takes four to five hours to fully recharge, by simply plugging it into a 240 V mains supply. The outboard also feeds the battery via the VSR and a PowrFlow step-up charger, as does the regenerative braking system. Solar power is another option. All systems are connected to a central Naviop display which supports MG’s battery systems to show battery status.

Combining of the latest battery and motor technology quite possibly represents the future of amphibious boating. “The release of the Electric E4 takes Sealegs’ global leadership position in amphibious technology to the next level,” according to Founder and Chief Technology Officer Maurice Bryham. “We have made our amphibious system 33% faster, 60% quieter and 50% more powerful.”

Components used

Loodswezen saves weight by replacing lead acid battery banks by MG’s High Power alternative

Loodswezen‘s maritime pilots make sure sea-going ships enter and exit their ports as safely and efficiently as possible. Day and night. Under any circumstance. The highly trained crew assists over 90 000 vessels a year in their voyage to and from Dutch and Flemish seaports on the Scheldt River and is on call 24 hours a day.

Tenders are used for embarkation and disembarkation as well as transporting the pilots smoothly and securely. Normally these very manoeuvrable boats come equipped with large and heavy lead-acid battery banks in order to deliver energy for propulsion and onboard service systems.

However, in close cooperation with MG a unique and innovative systems has been installed, consisting of 4 compact, light yet highly powerful battery modules, strong enough to deliver the peak capacity needed to start both engines and keep all systems running.

The entire system weighs only 100 kg, which is 3 times less than the traditional lead acid battery banks. Yet it complies with Loodswezen’s high standards of safety and efficiency. But most importantly, the tenders run fast, quietly and conveniently.

Thus the project illustrates how a  successful cooperation results in a sustainable industrial application.

Components used

Engine starting systems, 24 V (twofold)

Service system, 24 V

Supply & installation

This system is supplied and installed by our partner Alewijnse Marine.

Silent 55 sails free at sea with solar power and storage by MG

A growing number of luxury yachts is hybrid-electric. Some are even equipped with solar panels or power banks, but as these generally don’t provide enough energy to power both onboard systems and propulsion, most still rely on burning fossil fuels at least to some degree.

But that’s about to change. Enter Silent 55, the newest cruising catamaran by Silent Yachts, that relies nearly entirely on solar energy. No toxic exhaust, no noise from generators and no excessive vibrations from diesel engines. It’s virtually self-sufficient and maintenance-free.

The 55-foot vessel comes outfitted with 30 high-efficiency solar panels with a power output of around 9 kW. Using charge controllers this energy is stored in 28 high-energy Litium-Ion batteries to power both onboard amenities (through a 15 kVa inverter) as well as a its silent electric propulsion system.

The entire installation includes 2 systems, each consisting of 1 MG High Voltage Master and 14 MG High Energy Battery Modules, configured in series to achieve a system capacity of 2 x 70 kWh. Unique in this application is the unusually high system voltage of 400 VDC, while the setup is very compact and weighs only 2 x 400 kg.

A generator is on board for rough weather or emergencies, but the Silent 55 meant to cruise for weeks on end. Carefree.

Components used

2 systems, each consisting of:

Windcat Workboat sets a new standard for efficiency with batteries by MG

Windcat Workboats is Europe’s leading provider of specialist crew transfer vessels to offshore wind power industry. These high speed crafts are operated on a daily basis to ferry technicians and other personnel to and from installations in North West Europe, from the UK to Denmark and Germany.

The small yet fast catamarans are optimised to guarantee excellent quality of service, enabling the crew to perform their work offshore without delay, in a reliable and comfortable way. When it comes to operational safety the company is committed to the highest standards for international projects.

Windcat 41 is the latest addition to its fleet. This state of the art vessel, carrying 26 technicians, was built according to the latest technologies, rules and regulations. In order to comply with the industry’s energy reduction goals, while simultaneously meeting ever-increasing demands for higher comfort and performance, the 23 meter vessel was radically optimised in terms of hull design and – in stead of conventional batteries – outfitted with MG’s lithium-ion equivalents, due to their superior energy density.

The result surpassed all expectations. High performance, at a top speed of 31 knots using only two 720kW engines, with low fuel consumption and low emissions, stating a reduction of up to 40% compared to conventional designs. Which also yields a saving in costs. Thus the Wincat 41 sets a new industry standard for efficiency.

A total of four energy systems were installed, for emergency, service (twofold) and radio. Work on installing a similar setup on the next vessel is already underway. While MG’s energy systems are often used on luxurious super yachts, this projects shows they’re strong enough to perform on industrial workboats too.

Components used

Emergency system

Service systems (twofold)

Radio system

Supply, installation & certification

This system is supplied and installed by our partner Alewijnse Marine and certified by DNV-GL.

Check out our new products at the Electric & Hybrid Marine World Expo 2018

For the past couple of months, we’ve been working on some exciting new products and developments, which we’re proud to present at the Electric & Hybrid Marine World Expo 2018! More informations will be released in the upcoming weeks, so you can save the date and be the first to check them out, the 27th until the 29th of June 2018 in Amsterdam. We look forward to meeting you there!

Second generation battery module

The second generation Lithium-Ion NMC battery modules has arrived. This is an updated version with the latest safety features on module and cell level. It’s specifically developed for hybrid and full-electric marine applications. The high charge and discharge rates make it perfect for peak shaving solutions.

Monitoring & Control

One of the new products is a new developed display that monitors and controls all MG’s battery systems. The high resolution display with integrated touch screen shows alle the values you need to know of your bateries. The integrated wifi module will connect the display to the cloud and makes it possible to monitor your systems with our newly developed Energy Portal.

Key features EM-display:

  • Small (space saving)
  • Fast start-up (no long waiting)
  • Modern design (high quality glass LCD)
  • WiFi (cloud connection)
  • CAN-Bus (plug and play connection)
  • IP65
  • Economical (low price)

Key features MG Energy Portal:

  • Highly user customizable layout
  • Multiple systems on one account
  • Data logging
  • No additional costs

Opening hours

Wednesday 27 June 10:30 – 18:00
Thursday 28 June 10:30 – 19:00 *
Friday 29 June 11.00 – 16:00

*free drinks party from 17.30 to 19.00 hrs

Electric & Hybrid Marine World Expo 2016 free exhibition pass

Location

RAI Amsterdam,
Europaplein,
1078 GZ Amsterdam,
The Netherlands

You will find us at
booth E5060