The Icelandic Coast Guard (Icelandic: Landhelgisgæsla Íslands, Landhelgisgæslan or simply Gæslan) is the Icelandic defence service responsible for search and rescue, maritime safety and security surveillance, and law enforcement in the seas surrounding Iceland. The Coast Guard maintains the Iceland Air Defence System which conducts ground surveillance of Iceland's air space and operate Keflavik airbase. It is also responsible for hydrographic surveying and nautical charting.