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.....shhhh

..enjoy the silence

Probably the smartest propulsion

system gaining ground in yachting

MASTER enables you to travel greater distances in more remote areas, in greater safety and comfort and with lower emissions

After looking at traditional and nontraditional propulsion options including propellers, azipods, azipulls, forward-facing pods, and even double-prop thrusters, we ultimately decided on eVSPs.”

Drawing on their in-depth knowledge of explorer yacht conversions, ICON Yachts drove the decision to install eVSPs. In addition to doing propulsion feasibility studies on all of the above and more, ICON took a holistic approach to selecting machinery and equipment. First and foremost this included the need to create an unforgettable on-board living environment, mindful of the best solution and not driven by price considerations.

A yacht is more than one thing to her owner: she is a floating real estate asset, a remote office, a holiday retreat, a place for family time, a means of exploration and discovery, pure adventure, a tool for business or even just maybe an investment. In every case the owners’ requirements in terms of comfort and performance must be catered for, especially in the case of long voyages. The bar is so much higher than it was even 10 years ago.

eVSPs proved to be an unbeatable package under whatever scenario, including Polar Code certification and stability requirements. They are environmentally friendly and operate with low noise emissions and minimal energy consumption.

Conceived for worldwide operations including in isolated harsh regions, eVSPs have just started to gain traction in exploration yachting. They aren’t exceptionally novel (Eric Schneider actually completed his first design 90 years ago), but they are exceptionally efficient.

MASTER will be equipped with a diesel-electric hybrid propulsion system with five future-proofed Tier III diesel generators compliant with current emission reduction regulations and Tier IV ready. Here’s how the system works.

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The electrical power produced by the generators gives MASTER a 6,700nm range at 10 knots using Voith eVS propellers. Impressive to see, each eVSP includes a silent electric motor and a six-blade rotating propeller. The independently adjustable blades are tapered at the end and measure 1.75m (5’74”) in height and 50cm (1’6”) at the widest point. Collectively the blades rotate around a vertical axis allowing for 360 degrees rotation of the thrust direction: so, a vessel is also able rotate on its own axis without the need for thrusters even though MASTER has a Schottel bow thruster.

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PROPULSION eSVP

PROPULSION eSVP

The eVSPs are positioned more than 1 meter above the deepest point of the keel, approximately 5 meters away from the swim platform and around 2.5 meters below the waterline. This positioning eliminates any risk of contact with underwater obstacles and, since the eVSPs create no downward suction effect, there is no risk to swimmers.

When in hybrid mode, with the current design, the battery bank has a capacity of 2MW. The bank helps to level out onboard peaks in electricity use and, as a key benefit, reduces the need to use an additional generator for propulsion and/or hotel loads. The battery bank also enables emission-free, no generator anchorage for short periods and emission-free entry/exit from ports under electric power.

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Scan to view in 3D

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The eVSP are installed on MASTER. View of the stern from above during the installation.

The eVSP are installed on MASTER. View of the hull from below looking aft.

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Efficient performance, installation and maintenance

Since the electric motor is integrated into the propeller, it delivers high torque and fast response, without any gears. This translates into a more direct and almost loss-free conversion of the electrical drive power into thrust, delivering fast acceleration and response for precise and safe maneuvering. Comparative model tests have shown that the eVSP requires around 15% less energy than a conventional propeller.

Compared to traditional drive systems and shaft trains, eVSPs require much less installation space. Since space is always at a premium onboard, this is a huge benefit for ships built for long voyages in different climatic conditions.

When it comes to maintenance, eVSP propulsion is built

for long-term operations. Voith reported that “Based on installation data from several thousand VSPs, we know that maintenance intervals in dry dock extend for at least five to seven years

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Increased overall efficiency

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Minimal noise and vibration for increased comfort

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Fast acceleration and response for precise and safe maneuvering

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Roll stabilization

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Flexible installation and minimal space requirement

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High reliability and low operating costs 

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Maximum safety for vessel, passengers and the environment

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Environmentally Acceptable Lubricants (EAL)  can be used

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Increased overall efficiency

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Minimal noise and vibration for increased comfort

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Fast acceleration and response for precise and safe maneuvering

seesaw_5144920.png

Roll stabilization

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Flexible installation and minimal space requirement

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High reliability and low operating costs 

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Maximum safety for vessel, passengers and the environment

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Environmentally Acceptable Lubricants (EAL)  can be used

“The eVSP maximizes the

operational profile of your yacht while maintaining high comfort and less ecological impact”

….. while you perfect that effortless swing

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At ICON Yachts we know

that silence is golden

Noise and vibration make or break onboard comfort

eVSPs operate smoothly even when the generators are on and in hybrid mode the silence is deafening. Noise levels are equally low when using dynamic positioning.

The system is significantly quieter than conventional propulsion systems mainly because the gearbox, the main cause of vibrations on board, has been eliminated.  eVSPs are purpose-built to keep noise-emissions to a minimum. Quiet nights and no more smashed champagne glasses!

Additionally, you can enjoy a “silent period” either during nights at anchor or while enjoying the outside deck areas.

And no more whirlpools sloshing water on deck. eVSPs have a unique integrated roll stabilization system that eliminates the need for stabilizers underway or at anchor and “zero speed”. Moreover, there is no need for rudders as the integrated propellers act both for propulsion and steering.

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In short, eVSPs provide a proven, controllable,

robust and highly reliable propulsion system with excellent maneuverability, low noise levels, energy-saving and station-keeping capability. A world class package for a world class explorer.

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In short, eVSPs provide a proven, controllable, robust and highly

reliable propulsion system with excellent maneuverability, low noise levels, energy-saving and station-keeping capability. A world class package for a world class explorer.

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Build smart.
Let's talk

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Get connected.

Concept and text

Graphics

Penny Hammond-Smith

Matthieu Vuillaume​

PHOTOGRAPHY, RENDERINGS AND VIDEOS

Blueiprod

Guy Fleury

Yvan Grubski

Peter Neumann

Guillaume Plisson

Dimitris Stasis

VOITH

Winch Design

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