Following an extensive refit, HMS Portland has become the final Royal Navy Type 23 frigate to be fitted with Thales U.K.’s Sonar 2087, a towed array sonar system that enables warships to hunt submarines at considerable distances and locate them beyond the range from which they can launch an attack. Portland has now returned to service, with a rededication ceremony on March 21. The 12-month multi-million pound refit in Rosyth Royal Dockyard of Portland’s sensors, weapons and systems…