2005–2015

From 2005 until 2007 De Ruyter was commanded by Rob Bauer, during which period she was deployed to the Mediterranean as part of Standing NATO Maritime Group 2 as part of the NATO Response Force in Operation Active Endeavour. In late 2006, Bauer was deployed to Bahrain for five months as Deputy Commander of Combined Task Force 150 in Operation Enduring Freedom.^[2] From 12 January 2007 to July 2009 De Ruyter was commanded by Commander Jeanette Morang, the first woman to command a frigate of the Royal Netherlands Navy.^[3][4] Commander Harold Liebregs was De Ruyter's commanding officer from December 2012.^[5]

In September and October 2007, satellite television channels in Israel were plagued with signal disruptions, with the north of the country particularly badly affected. Eventually the Ministry of Defense intervened, and with the help of the Israel Defense Forces and Israeli Sea Corps, discovered that the problems had been caused by the radar systems of Dutch UNIFIL ships patrolling off the coast of Lebanon.^[6] De Ruyter, anchored off the coast of the Lebanon, allegedly transmitted signals onto frequencies adjacent to those used by the satellite operator.^[7]

On 12 January 2012 De Ruyter sailed from her home port of Den Helder to take up the role of flagship for Standing NATO Maritime Group 1. The group, led by Dutch Commodore Ben Bekkering, was under Dutch command for the remainder of the year, beginning on 23 January when De Ruyter assumed the flagship role in the Italian port of Taranto. De Ruyter took part in maritime operations and exercises in the Mediterranean and counterpiracy operations around the Horn of Africa, before being replaced by her sister ship HNLMS Evertsen in April.^[8]

In early 2013 De Ruyter deployed with Operation Atalanta, the EU's anti-piracy mission off the Horn of Africa. On 19 February De Ruyter was tasked to locate a group of suspected pirate skiffs reported by a Panamanian merchant ship.^[9] De Ruyter located two skiffs 200 nautical miles (370 km; 230 mi) north east of Eyl, which split up when approached. One was stopped and detained by the De Ruyter, the other was apprehended by the Spanish frigate Méndez Núñez. Nine suspected pirates were then detained aboard the De Ruyter.^[9] The suspected pirates were transferred to authorities in the Seychelles on 25 February for prosecution.^[10] On 27 March De Ruyter's NH-90 helicopter carried out a series of exercises involving landing on the Spanish patrol vessel Rayo, the "first helicopter from another Operation Atalanta unit to land on the Spanish warship".^[11]

On 9 April 2013 De Ruyter hosted Dutch Prime Minister Mark Rutte, Defence Minister Jeanine Hennis-Plasschaert, and the Chief of Defence General Tom Middendorp on an official visit while De Ruyter was operating off the Somali coast.^[12] De Ruyter served as the flagship for the maritime component of the NATO exercise "Steadfast Jazz 2013", which took place in the Baltic Sea in October and November 2013.^[13]

2016–present

In September 2016 she became flagship of Standing NATO Maritime Group 2 in the Aegean Sea, replacing the German frigate Karlsruhe in the role.^[14] De Ruyter was in turn replaced in December 2016 by the German frigate Sachsen.^[15]

On 29 January 2016 De Ruyter assisted two lifeboats of the Royal National Lifeboat Institution with the rescue of the cargo vessel MV Verity. Following engine failure the stricken Verity was drifting towards the coastline and had to be taken under tow by the lifeboats to keep it clear of the coast. Shortly after De Ruyter arrived and took over the tow, the captain maintained the position of the stricken vessel with before it could be towed out to anchor prior to the arrival of a tug.^[16] De Ruyter was then involved in Exercise Formidable Shield off the Scottish coast in 2017. De Ruyter was tasked with providing data from her Thales Nederland SMART-L long-range air and surface surveillance radar to a US destroyer launching a SM-3 missile against a ballistic missile target.^[17]

On 3 July 2018 De Ruyter once again became the flagship of Standing NATO Maritime Group 2, taking over from the Royal Navy's HMS Duncan, with Dutch Commodore Boudewijn G.F.M. Boots succeeding British Commodore Mike Utley.^[18] In September 2018 De Ruyter and Standing NATO Maritime Group 2 took part in the Hellenic Navy's biennial multinational naval Exercise Naias 2018.^[19] On 25 October 2018, the frigate was scheduled to take part in the NATO exercise Trident Juncture which was held in and around Norway in 2018.^[20]

On 28 January 2020, De Ruyter left Nieuwe Haven to join the French-Led Task Force in the Persian Gulf.^[21][22] Between 7 and 8 February 2020, the vessel participated in a joint training operation with the Maritime Squadron of the Armed Forces of Malta which involved various scenarios at sea. She was joined by the Maltese patrol vessel P62. The onboard NH90 was joined in the air by the Maltese AW139.^[23]

• 
  De Ruyter in Gdynia
• 
  De Ruyter fires a SM-2
• 
  Flight deck of De Ruyter in February 2020