- Rolls-Royce Olympus gas turbine 54,000 hp (40,268 kW)
- Rolls-Royce Tyne gas turbine 8,200 hp (6,115 kW)
- 2 * shaft
- AN/SPS-01 3D air search radar
- Decca 1226 navigation radar
- WM-25 fire control radar
- AN/SPG-51C fire control radar
- CWE-610 bow sonar
- Type 162 bottom search sonar
- RAMSES jammer
- Mk.36 SBROC
- 1 * Mark 13 launcher for Standard SAM (40 reload missiles)
- 1 * Mark 29 (octuple) Sea Sparrow SAM (16 missiles)
- 8 * Mark 141 launcher for RGM-84 Harpoon SSM
- 2 * 120 mm Bofors guns (1 twin turret – turrets were salvaged from HNLMS Gelderland, a Holland class destroyer)
- 2 * Triple anti-submarine torpedo tubes
- 1 * Goalkeeper short-range defence-system
- 1 * Westland WG-13 Lynx Mk.25/27/81/SH-14D maritime helicopter
The Tromp class were two frigates built for the Royal Netherlands Navy during the 1970s to replace the De Zeven Provinciën-class cruisers as squadron flagships.
The Tromp-class frigates entered service in 1975 and 1976 and served until 1999 and 2001. Both ships were built by Royal Schelde Shipyard in Flushing (Vlissingen). The ships served as fleet flagships and area air defence vessels. Their 3D radar under a large polyester radome, gave the ships the nickname «Kojak» in the Netherlands Navy. Originally the ships were to have the British Sea Dart missile system, but this was changed to the more compact American Standard surface-to-air missile.
The ships were replaced by the De Zeven Provinciën-class frigates. A total of four new frigates have been built, including two also named Tromp and De Ruyter.