• Tel: 01524 383320 Forsberg Services. North Quay Offices, Heysham Port, Heysham, UK

CPUpak4 integrated precision navigation system designed, prototyped, built and supported for Royal Navy mine countermeasures vessels and remains in service since it’s integration 2003.


  • Design, prototype, build and support an integrated navigation system that would reliably work with DGPS worldwide on-board a warship
  • Incorporate pitch, roll, heading, position from PPS and SPS while utilising both an anti-jamming antenna and SeaSTAR’s worldwide VBS GPS correction service
  • Quality control of data and Built-In-Test results from the hardware were of paramount importance


  • A new version of the CPUPak-4 with a built-in processor card and eight serial COM ports alongside Ethernet and USB
  • The unit also had a full Graphic User Interface through NAVPak-RT by way of a ruggedized monitor, keyboard and trackball
  • Delivered in 2002 and remains in service today
  • It was later modified for specific requirements for two other navies.