What is "havelsan"

HAVELSAN is a Turkish software and systems company having business presence in the defence and IT sectors. It is headquartered in Ankara, Turkey, with subsidiary companies and offices around Turkey and abroad. Havelsan is mostly active in the fields of C4ISR, naval combat systems, E-government applications, reconnaissance surveillance and intelligence systems, management information systems, simulation and training systems, logistic support, homeland security systems and energy management systems.