27 February 2018

Diesel Electric propulsion – Q & A

Posted in News, Wider Logbook

Diesel Electric propulsion – Q & A

Over the last few years we have seen a dramatic increase in the acceptance of Electric technology, largely driven by growth in the automotive industry. Clients are increasingly knowledgeable about the Diesel Electric system although there are multiple questions which come up repeatedly in early discussions. We will look at some of these questions in this and forthcoming issues of Logbook.
1. Why does WIDER believe that Diesel Electric propulsion and the Direct Current (DC) grid solutions are the future?

Fundamentally, because Diesel Electric offers numerous advantages over the traditional system which, due to advances in production, are now readily available for yachts starting from 40m. The choice of DC grid – WIDER are the first builder of yachts to include this system although others have used AC grids and are now following suit - was based on a thorough consideration of the specific power requirements for yachts in this size range, from very low usage at night time at anchor, c. 50kW, through to high usage while steaming at full speed, cooking lunch for guests & crew with air conditioning on max, c.1200kW.
Generators convert mechanical energy (supplied by a diesel engine) into Electrical energy. The DC system involves running generators at variable speed (by adjusting the RPM of the diesel engine) and hence the output of electrical energy. Variable speed generators thus allow us to produce electricity to cater for the specific demands of the yacht at any given moment, no more no less. By contrast a standard generator will run the diesel engine at fixed RPM producing fixed output of power, ie they are binary: either ON or OFF, necessitating the inclusion of load banks to ensure smooth operation. These are essentially very inefficient given that the maximum power is produced irrespective of the specific power demands from Hotel & propulsion at the time.
The DC system ensures for a very efficient performance of the generators meaning savings in fuel consummation but also, more importantly, in terms of reduced noise and vibration and increased time between overhauls on the machinery (meaning reduced ownership costs). These are all qualities - readily available in their house and in their choice of cars - which appeal to the modern yacht buyer.

If you have any questions about this article or indeed any other point which you would like clarifying in more detail, please email us at This email address is being protected from spambots. You need JavaScript enabled to view it.
The WIDER 165 is currently in build and available for sale at €30m euro. She is scheduled to be launched in the Spring of 2018, with final delivery in time for the summer. See here for latest update.

For further information:

WIDER Press Office

Martina Casagrande  
P +39 071 201166 E mcasagrande@wider-yachts.com

©2017 Wider s.r.l. - Via Maffeo Pantaleoni – 60125 Ancona AN – Italy
T +39 071 201166 - F +39 071 201167 - P.IVA 02410010413 - Disclaimer & Privacy Cookie Policy - creditspic-foo

Cookies help us provide you with our services

By using our services, you accept our methods of using cookies. Learn more

I understand

What are cookies?

Cookies are fragments of text thanks to which the web server stores information on the browser to be used again during the same visit to the site or at a later date. In the former case, they are referred to as session cookies. In the latter, they are referred to as persistent cookies.

When you visit a website, you may receive cookies from both the site itself as well as from sites managed by other organisations.

This site uses cookies, which differ depending on the usage purpose.


Technical cookies are important for the functioning of certain specific sections of the website.

Technical cookies are used and sent except where the user has disabled them using the procedure described hereinunder.
As regards this, you need to know that disabling one or more cookies could
compromise the correct functioning of one or more pages of the site.


Profiling cookies on the other hand are necessary to create user profiles to send advertising messages in keeping with the preferences and aptitudes expressed by the person browsing through the various pages of the site. This site does not use this type of cookies sent by their own domain.

As regards third-party cookies below are the web addresses where you can consult the various information notices and respective methods concerning third-party cookie management:

• Facebook information notice: https://www.facebook.com/help/cookies
• Twitter information notice: https://support.twitter.com/articles/20170514
• Linkedin information notice: https://www.linkedin.com/legal/cookie-policy


Google Analytics

This website uses Google Analytics, the web analysis service provided by Google, Inc. ("Google") which uses cookies. For further details, please refer to the link below:

https://www.google.it/policies/privacy/partners

To disable Google Analytics, please refer to the link below:

https://tools.google.com/dlpage/gaoptout


Cookie management

Website users may decide whether to authorise the use of cookies or not on their browser settings. Below are links containing instructions on how to do this for all the major browsers:


• Chrome: https://support.google.com/chrome/answer/95647?hl=it
• Firefox: https://support.mozilla.org/it/kb/Gestione%20dei%20cookie
• Internet Explorer: http://windows.microsoft.com/it-it/internet-explorer/delete-manage-cookies
• Opera: http://help.opera.com/Windows/10.00/it/cookies.html
• Safari: http://support.apple.com/kb/HT1677?viewlocale=it_IT


Further details on third-party cookies and how to disable them can be found on the website:

http://www.youronlinechoices.com/it/