This Royal Navy vessel is the fourth Type 45 air defense destroyer. HMS Daring was the lead ship of this new class, the UK's first new destroyer type since the 1970s. A total of six ships are being constructed. Dragon was launched by BAE Systems Naval Ships in November 2008 and she is due for commissioning in the spring of 2012. The destroyer has a sleek and smooth profile designed to provide a low radar cross-section, and these Daring-class air warfare destroyers are among the world's most advanced of their type. Their combat systems are based around the SAMPSON multifunction radar, S1850M 3-D air surveillance radar and Sea Viper missile system (with 48 Aster 15 and 30 air defense missiles and Sea Skua anti-ship missiles).