HNLMS Tromp (F803) forms the second of four-strong De Zeven Provincien-class serving the modern Royal Netherlands Navy (RNN). The lead-ship is De Zeven Provincien (F802) herself joined by sisters De Ruyter (F804) and Evertsen (F805). HNLMS Tromp saw her keel laid down on September 3rd, 1999 and she was launched to sea on April 7th, 2001. Commissioned on March 14th, 2003, she remains in active service as of this writing (2019).
The ships of the class are detailed as an "air defense and command" vessels and, as such, are multirole by their design nature. They were born as part of a tri-nation initiative involving Germany, the Netherlands, and Spain and this begat the Sachsen-class, Provincien-class, and Alvaro de Bazan-class groups, respectively - each to use as many common parts and components as possible between them. The resulting Provincien-class is a powerful group by modern standards and all four ships continue in service.
As completed, HNLMS Tromp has a displacement of 6,050 tonnes under full load and a running length of 473.2 feet, a beam of 61.7 feet, and a draught of 17 feet. Power is through a COmbined Diesel-And-Gas (CODAG) arrangement involving 2 x Wartsila 16V26 marine diesel units outputting 6,800 horsepower for general cruising and 2 x Rolls-Royce Spey SM 1C gas turbines of 26,100 horsepower for dash actions. These drive power to 2 x Shafts under stern and provide the ship with a forward speed of 30 knots (in ideal conditions).
Aboard is a crew of 202 and includes an air arm to manage the single NHIndustries NH90 navy helicopter that is launched and retrieved from the stern helipad. Attached to this is a full-service hangar facility. Installed systems cover the gamut of usual processing units and sensors: air-search/surface-search, fire control, navigation, sonar and the like.
Armament is led by the single 127mm L/54 Dual-Purpose (DP) turreted deck gun over the forecastle. Up to 2 x "Goalkeeper" Close-In Weapon Systems (CIWSs) are installed as are up to 4 x 12.7mm Heavy Machine Guns (HMGs) and up to 6 x 7.62mm Medium Machine Guns (MMGs). Beyond this is a 40-cell Mk 41 Vertical Launch System (VLS) housing SM-2 IIIA series Surface-to-Air Missiles (SAMs) and Evolved Sea Sparrow SAMs. 8 x "Harpoon" Anti-Ship Missiles (ASMs) give a powerful, much-needed ranged punch against surface vessels and submarines can be countered through the 2 x Mk.32 Mod 9 twin torpedo tubes supporting the Raytheon Mk.46 Mod 5 torpedo family.
Design features of Tromp are consistent with modern warships: slab-sided hull superstructure blending well to the hull proper, reduced protrusions where possible, integrated forward and aft mast and low-profile smoke funnels. The rear section of the ship is taken up by the combination helipad-hangar.
For her part in recent naval history, HNLMS Tromp has seen active service in Pacific waters in 2006 and, in 2010, across the Indian Ocean to combat regional piracy threats there. In 2011, she was stationed off the Libyan shore to evacuate any remaining Dutch nationals caught up in the Libyan Civil War.