Paramarine advanced marine design software by QinetiQ GRC is being used by BAE Systems to design Astute the new class of nuclear submarines for the royal navy. The design and construction of BAE Systems’ Astute Class is an extremely challenging engineering project. Once deployed, Astute is designed to require no refuelling throughout her full service life, in excess of 25 years, and can patrol for 90 days remaining undetected thousands of miles from home and hundreds of metres underwater.