You could have downloaded IRClassTM 3.1 from our software library for free. This tool was originally designed by Indian Register of Shipping. Commonly, this program's installer has the following filename: TMR.Appmanager.exe. The software lies within Education Tools, more precisely Science Tools. The most popular version among the software users is 3.1.
From the developer:
IRClassTM software is a software package which assists surveyors in verification of the compliance of the ship thickness measurements according to rules and regulations set forth by Indian Register of Shipping and IACS CSR for Oil Tanker and Bulk Carrier.
It is developed by Indian Register of Shipping.
You may want to check out more software, such as Panel, MathMatic or Lasergene, which might be similar to IRClassTM.