Istanbul-class frigate

The Istanbul-class frigates (also known as TF-100, MILGEM II, İstif and I class) are a class of multirole frigates currently being constructed for the Turkish Naval Forces and the Indonesian Navy. The ship class developed under the MILGEM national warship program with enhanced endurance and MiDLAS vertical launching system (VLS) for multi-role capability. Turkish company STM is the designer and prime contractor of the ship class. The class is also offered for export. Ships of the class are made by four Turkish shipyards. The frigate class is fast and highly maneuverable due to using of CODAG technology.

On 19 January 2017, the Turkish Navy held a ceremonial steel cut for the lead shipTCG Istanbul (F 515). Istanbul was laid down on 3 July 2017 and launched on 23 January 2021.