Both Tromp-class frigates entered service in 1975/76. Their primary task was area air defence. They acted as flagships for the COMNLTG (Commander Netherlands Task Group). Because of their large radome (wich housed a 3D radar antenna) the ships had the nickname “Kojak” after the bald-headed actor in the famous action crime tv-series.

Both Tromp-class frigates entered service in 1975/76. Their primary task was area air defence. They acted as flagships for the COMNLTG (Commander Netherlands Task Group). Because of their large radome (wich housed a 3D radar antenna) the ships had the nickname “Kojak” after the bald-headed actor in the famous action crime tv-series.