Twin Blade Ltd
Makers of the Manta Equation twin foil mono-hull sailboat

Are you sailing comfortably?


Legal information concerning copyright etc.

In every following instance the use of the words Twin Blade will be used to signify Twin Blade Limited. The following information is provided on your rights to Twin Blade website material and general legal information.

Most importantly the design of the twin foil stabilized mono-hull Manta Equation is legally protected as a Registered Design [#2077140].

Twin Blade hereby gives authority for one to view, copy, print, and download Twin Blade web contents [including all editorial and downloadable version of adverts and press materials, in both text, pdf, html or zipped format] subject to the following conditions:

  • Don't change them in any way, except to create corrected versions to return to us, your input, hints, tips and spelling corrections are always welcome.
  • The documents on this site are for non-commercial purpose only.
  • Without written permission from Twin Blade, no part can be reproduced, retransmitted or otherwise messed about with.
  • Document design layout, colour schemes and individual elements of the web site design can not be altered without written permission from Twin Blade.
  • You may not remove copyright notices, trademarks, and other notices from any page or object in the web site.
  • Twin Blade documents available from the web site [ and] are protected by copyright law.
  • You should not and may not reproduce, copy or redistribute any document web site from this web site in whole or in part without written permission of Twin Blade.
  • Any software that is made available to be downloaded is freely available over the WWW, and is maintained in the form intended. None of the files on this page have been modified from their original form. Use of the software is governed by the terms and End User License Agreement supplied with some of the software. Software is provided as is, no modification or disassembling of the software is allowed.
  • Removal of product symbols, logos, or copyright notices or other trademarks from downloads on this site is also prohibited.

Helpful hint:- If you want a picture, or our logo on your site there is no need to copy it at all, just link to it, that way you need not update your site when we change ours. Let us know if you do and we can inform you if we do change the image name.


There are many links provided which will link to other web sites, files and protocols, disconnecting you from Twin Blade. These sites are obviously not under the supervision of Twin Blade and therefore Twin Blade is not responsible for the contents of any site linked to from its own sites [ and]. These links are provided as a convenience, Twin Blade does not endorse linked sites. Every effort will be made on the part of Twin Blade to maintain links, removing or re-directing 'dead' links as appropriate. Should the unthinkable happen, and a porn spammer take over a linked site, Twin Blade cannot be held responsible.


No part of the material on this site, including the editorial and site specific graphics may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form by any means without the express written permission by Twin Blade except in the cases below: One copy of all downloadable editorial and press material may be kept in zipped, pdf, or unzipped htm and text at any one time for back-up and or research purposes. Limited distribution of the material on this site is permitted providing the copyright notice and Twin Blade logo on every page remains intact. Limited distribution does not apply to other web sites, magazine cover disks or other distribution media. Limited distribution does apply to a single copy of all material on one storage medium for one friend.

Limit of liability

Twin Blade provides all site material and editorial 'as is' without warranty of any kind, either express or implied, including but not limited to the implied warranties or conditions of merchantability or fitness for a particular purpose. In no event shall Twin Blade be liable for any loss or profits, loss of business, loss of use or data, interruption of business, or for indirect, special, incidental, or consequential damages of any kind, even if Twin Blade has been advised of the possibility of such damages arising from any defect or error in this material. Mission critical machines should not be messed with. Twin Blade will revise this material from time to time without notice. Products mentioned on this site are mentioned for identification purposes only. No endorsement of specific products is intended or implied unless explicitly stated. Product names appearing in this material may or may not be registered trademarks or copyrights of their respective companies.

Privacy information

Statement of intent

From time to time, you may be asked to submit personal information about yourself [eg name and email address] to receive or use services on this website. By entering your details you enable Twin Blade to provide you with the services you select. Whenever you provide such personal information, we will treat that information in accordance with this policy. Twin Blade will act in accordance with current legislation and aim to meet current Internet best practice

Submitting personal information

When you supply any personal information to Twin Blade we have legal obligations towards you in the way we deal with that data. We must collect the information fairly, that is, we must explain how we will use it (see the notices on particular webpages that let you know why we are requesting the information) and tell you if we want to pass the information on to anyone else. In general, any information you provide to Twin Blade will only be used within Twin Blade. It will never be supplied to anyone outside Twin Blade without first obtaining your consent, unless we are obliged by law to disclose it. We will ensure that all personal information supplied is held securely, in accordance with the Data Protection Act 1998.

Access to your personal information

You have the right to request a copy of the personal information Twin Blade holds about you and to have any inaccuracies corrected. Please address requests to the Data Protection Officer [email:]. At present Twin Blade holds no information of this type, and does not plan to do so.

Users 16 and under

If you are aged 16 or under, please get your parent/guardian's permission beforehand whenever you provide personal information to the Twin Blade's website.Users without this consent are not allowed to provide us with personal information.

Information on visitors

During the course of any visit to Twin Blade, the pages you see, along with a cookie, may be downloaded to your computer. At the present time Twin Blade does not use personal id cookies, but we do reserve the right to do so in future.


When you enter a site that uses cookies your computer will automatically be issued with a cookie. Cookies are text files that identify your computer to the server. Cookies in themselves do not identify the individual user, just the computer used. Cookies themselves only record those areas of the site that have been visited by the computer in question, and for how long. Users have the opportunity to set their computers to accept all cookies, to notify them when a cookie is issued, or not to receive cookies at any time. The last of these, of course, means that certain personalised services cannot then be provided to that user. Even if you haven't set your computer to reject cookies you can still browse our site anonymously. No material requiring the explicit use of cookies is served by Twin Blade.

How to control your cookies

Netscape 6.0: Edit/Preferences/Advanced/Cookies
Netscape Communicator 4.0: Edit/Preferences/Advanced/Cookies
Internet Explorer 5.0 or 5.5 Tools/Internet Options/Security/Custom Level
Internet Explorer 4.0: View/Internet Options/Advanced/Security
Internet Explorer 3.0: View/Options/Advanced/Warn before Accepting Cookies.

How to view your cookies

Netscape 6.0: Edit/Preferences/Advanced /Cookies /ViewCookies
Netscape Communicator 4.0: Search for Cookie.txt on your C: drive
Internet Explorer 5.0: Tools/Internet Options/General/Settings/View Files
Internet Explorer 4.0: View/Internet Options/General/Settings/View Files.
Internet Explorer 3.0: View/Options/Advanced/View Files.

Click on a cookie to open it. You'll see a short string of text and numbers. The numbers are your identification card, which can only be seen by the server that gave you the cookie.