Ahmad Yani-class frigate

{{Infobox ship image

| Ship image = Indonesia Frigate KRI Karel Satsuit Tubun.jpg

| Ship caption = KRI Karel Satsuitubun

}}

{{Infobox ship class overview

| Name = Ahmad Yani class

| Builders = *Nederlandsche Dok en Scheepsbouw Maatschappij

• Damen Schelde Naval Shipbuilding

| Operators = {{naval|Indonesia}}

| Class before = {{sclass|Martha Khristina Tiyahahu|frigate|4}}

| Class after = {{sclass|Martadinata|frigate|4}}

| Subclasses = {{sclass|Van Speijk|frigate|4}}

| Cost =

| Built range = 1963–1968

| In service range = 1986–present (Indonesian Navy)

| In commission range =

| Total ships building =

| Total ships planned =

| Total ships completed = 6

| Total ships cancelled =

| Total ships active = 5

| Total ships laid up =

| Total ships lost =

| Total ships retired = 1

| Total ships preserved =

}}

{{Infobox ship characteristics

| Hide header =

| Header caption =

| Ship type = Frigate

| Ship displacement = 2,200 tons standard, 2,850 tons full load

| Ship length = {{convert|113.4|m|ftin|abbr=on}}

| Ship beam = {{convert|12.5|m|ftin|abbr=on}}

| Ship height =

| Ship draught = {{convert|5.8|m|ftin|abbr=on}}

| Ship power =

| Ship propulsion = *As built

• 2 x geared steam turbines
• {{convert|22,370|kW|shp|lk=on|abbr=on}}
• 2 x shafts
• Rebuild
• Caterpillar diesels (5 ships)
• SEMT-Pielstick diesels (1 ship)

| Ship speed = *{{convert|28.5|kn|lk=in}}

• With new diesels - estimated max. {{convert|24|kn|abbr=on}}

| Ship range = {{convert|4500|nmi|lk=in|abbr=on}} at {{convert|12|kn|abbr=on}}

| Ship endurance =

| Ship complement = 180

| Ship sensors = *Radar: LW-03, DA-02, M45, M44{{cn|date=October 2020}}

• Sonar: Types 170B, 162
• Combat system: SEWACO V

| Ship EW =

| Ship armament = *1× OTO Melara 76 mm gun

• 2× twin Simbad{{cite web|url=https://www.indomiliter.com/van-speijk-class-benteng-laut-nusantara-tiga-dasawarsa-flagship-armada-eskorta-tni-al/|title=Van Speijk Class: "Benteng Laut Nusantara" – Tiga Dasawarsa Flagship Armada Eskorta TNI AL|website=indomiliter.com|date=29 September 2014|accessdate=18 April 2021|lang=id}}
• Launcher for Mistral SAMs
• (Originally equipped with Seacat)
• 4× SS-N-26 SSM (KRI Oswald Siahaan)
• 4× C-802 SSM (on five ships)
• (Originally equipped with Harpoon Block 1D)
• 2 × 3 – Mk 32 anti-submarine torpedo tubes

| Ship armour =

| Ship armor =

| Ship aircraft = 1x NBO-105C

| Ship aircraft facilities = Hangar

| Ship notes =

}}