June Newsletter is Available!

We are pleased to announce that our June newsletter 2016 is available here:


which includes the announcement of Cradle-7.1.1 that integrates SysML into the systems lifecycle, invites you to visit us on stand B4 at INCOSE 2016, and discusses other topics of interest to all Cradle users.

We hope that you find it interesting and helpful!

Cradle-7.1.1 Released

We are pleased to announce that we have released Cradle-7.1.1, an update to the Cradle-7.1 release that added SysML into the range of MBSE notations available in Cradle’s integrated modelling tools.

The Cradle-7.1.1 release changes the way that equipments and ports are drawn in Physical Architecture Diagrams, allowing public ports to be drawn more neatly and more densely inside equipment symbols. It also adds a new ability to run queries on items that are indirectly linked or not linked to other types of iterms, and a variety of other small updates.

Security Codes for Cradle-7.1 will also work with Cradle-7.1.1.

If you have a single-user Cradle-7.1 system, such as Cradle-SE Pro, then you can also upgrade to Cradle-7.1.1.

To get the new release, please go to:


and login and download the software from the Resources section of our website.

If you install Cradle-7.1.1 anywhere, please install it everywhere!

We hope that you will like this new release of Cradle!

Cradle-7.1 – SysML Videos

Our 3SL colleagues in the US have posted a series of videos demonstrating the SysML support in Cradle-7.1. This is a single demonstration, split into a series of parts:

You can access these demonstration videos here:


Please look at these videos and see how SysML models can be built in Cradle and how these models can be integrated into other information, including requirements, tests, test cases, defects, issues and risks.

At 3SL we believe that MBSE is the ideal approach (whichever notations you choose to use) but only if it is integrated into all of the other information in your project.

MBSE in isolation is just a bunch of pretty pictures!

Using SysML in a MBSE Process in the Systems Lifecycle

3SL attended the SEC 2016 conference in Washington at the end of last month. We presented a tutorial on how SysML can be used in a MBSE process that is integrated into the rest of the systems lifecycle, including initial needs and requirements capture and following with links to test and delivery.

That presentation can be downloaded from our website here:


and as a compressed link, here:


We hope that you find this presentation helpful!

April Newsletter is Available

We are pleased to announce that our April newsletter 2016 is available here:


which announces the release of Cradle-7.1 that integrates SysML into the systems lifecycle!

If you have an active maintenance agreement with 3SL, you are welcome to upgrade to Cradle-7.1 at any time, but please remember that you will need a new Security Code from 3SL to use Cradle-7.1!

Cradle-7.1 is Available!

We are pleased to announce the release of Cradle-7.1 that introduces SysML into Cradle’s existing modelling capabilities and allows SysML to be integrated with the needs, goals, objectives, user stories, sprints, SBS, PBS, test cases, verifications and validations (and so on…) in the full systems engineering lifecycle.

This is more than mere MBSE. This is lifecycle-enabled MBSE!

Only from 3SL and only from Cradle!

For more details, visit www.threesl.com and talk to us at salesdetails@threesl.com or me at: mark.walker@threesl.com or contact me through LinkedIn!

If you want to upgrade to Cradle-7.1, you will need a new Security Code as Security Codes for previous versions (such as 7.0 and 6.8.x) will not work with this release. Also note that if you upgrade Cradle anywhere (such as a client or your server) then you must upgrade all Cradle installations.

Once again, we would like to take this opportunity to thank everyone who gave up their time in the Beta test programme. Your hard work is very much appreciated!

3SL Presenting at SEDC 2016

We are pleased to announce that we will be presenting a paper at the forthcoming SEDC 2016 conference, either:

– “Executives Will Want to use MBSE”, or
– “Learn a Simple MBSE Process by Connecting the Dots Using SysML Tutorial”

Details of the SEDC conference can be found here:


We look forward to meeting you there!

SysML is On the Way!

We are pleased to advise that we will soon be releasing our SysML extension to Cradle as part of the Cradle-7.1 release in the next couple of months.

This will be unique in the world of SysML, and we encourage you to investigate what we can offer.

SysML is the UML ‘dialect’ for systems engineering. It has many capabilities. It is, fundamentally, just another modelling notation through which MBSE (model based systems engineering) can be conducted. In that sense, it is nothing new. There have been many other notations in the past, all of which permitted MBSE.

What is different now is that by integrating the latest SysML notation into Cradle’s unique ability to support the entire lifecycle in a single tool, with a single database, we can offer MBSE using the latest notation with complete traceability from requirements and into test management, defect tracking, release, maintenance and ultimate system disposal.

This is unique! We are very excited about it!

We hope that you will join us in the new opportunities that Cradle-7.1 will provide!

We will announce details of the Beta programme very soon, and hope that you can be a part of it!