Piet Hein or Piet-Hein may refer to:
The Royal Netherlands Navy is the naval force of the Kingdom of the Netherlands. Its origins date back to the Eighty Years' War (1568–1648), the war of independence from the House of Habsburg who ruled over the Habsburg Netherlands.
A submarine tender is a type of depot ship that supplies and supports submarines.
The Karel Doorman-class frigates are a series of eight multi-purpose vessels built for the Royal Netherlands Navy. Its namesake is Karel Doorman, a Dutch naval officer whose ship was struck by a Japanese torpedo in the battle of the Java Sea in 1942, and who, as a result of which, went down with his ship.
HNLMSBuffel is a 19th-century ironclad ram ship. She was one of the main attractions of the Maritime Museum Rotterdam, also known as the Prince Hendrik Museum, named after its founder, Prince Henry (Hendrik) "The Navigator", who had a naval career and established the basis of the museum back in 1874. In October 2013 the ship moved to Hellevoetsluis and is again open for public.
BAPAlmirante Grau(CLM-81) is a De Zeven Provinciën-class cruiser that served in the Royal Netherlands and Peruvian navies. Completed for the Dutch in 1953 as HNLMS De Ruyter (C801), she was acquired by Peru in 1973 and served as fleet flagship. Almirante Grau underwent a major modernization program between 1985 and 1988 during which she was fitted with new weapons and electronics. She was the last gun cruiser in service in any navy before being decommissioned on 26 September 2017. In 2019, it was announced that she would be preserved as a museum ship.
Coastal defence ships were warships built for the purpose of coastal defence, mostly during the period from 1860 to 1920. They were small, often cruiser-sized warships that sacrificed speed and range for armour and armament. They were usually attractive to nations that either could not afford full-sized battleships or could be satisfied by specially designed shallow-draft vessels capable of littoral operations close to their own shores. The Nordic countries and Thailand found them particularly appropriate for their island-dotted coastal waters. Some vessels had limited blue-water capabilities; others operated in rivers.
HNLMSBonaire was a 4th class screw steamship of the Royal Netherlands Navy, now under restoration as a museum ship.
HNLMS De Ruyter is a De Zeven Provinciën-class frigate of the Royal Netherlands Navy. She was laid down in 2000, launched in 2002, and commissioned in 2004, the third ship of her class to enter service. The frigate is named after Dutch admiral Michiel de Ruyter (1607–1676).
HMS H6 was a British H-class submarine of the Royal Navy built by Canadian Vickers & Co. during World War I.
HNLMS Karel Doorman is a multi-function support ship for amphibious operations of the Royal Netherlands Navy, which is also used by the German Navy. The ship replaced both of the navy's replenishment oilers: HNLMS Zuiderkruis and HNLMS Amsterdam. At 204.7 metres (672 ft) she is the largest ship in service in the Netherlands navy.
The Dolfijn-class submarines of the Royal Netherlands Navy are a class of four submarines; Dolfijn, Zeehond, Potvis and Tonijn. They were built in the late 1950s and the early 1960s. They were the first indigenous submarines built in the Netherlands and for the Royal Netherlands Navy after World War II. In the Netherlands they are also known as "three cylinder" submarines.
The M class were the first minesweepers of the Royal Netherlands Navy. The need for minesweepers for the Dutch marine came during the First World War when sea mines were laid in great numbers.
Vice admiral Matthieu Borsboom is a retired Royal Netherlands Navy officer who is a former Commander of the Royal Netherlands Navy and Admiral Benelux, and has served with the International Security Assistance Force in Afghanistan.
Two ships of the Royal Netherlands Navy have been named HNLMS Abraham Crijnssen, after the 17th century naval commander Abraham Crijnssen:
The Van Amstel class was a class of six frigates that were built during the Second World War in the United States and served as Cannon-class destroyer escort during that war. After the war the destroyer escorts were loaned to the Dutch navy as part of the MDAP and from 1950 to 1967 served as the Van Amstel-class frigates.
HNLMS Mercuur (A900) is a submarine support ship of the Royal Netherlands Navy. The ship was built and designed specially to support the Dutch submarines. She entered service on 21 August 1987, and is the only surface vessel attached to the Dutch submarine service.
HNLMS Onverschrokken (A856), also known as HNLMS Mercuur (A856), was an ocean minesweeper of the Royal Netherlands Navy. Between 1954 and 1965 she was mainly used to clean up a huge amount of explosives and mines that had ended up in the sea during the Second World War. Later, in 1973 she was renamed as HNLMS Mercuur (A856) and used as submarine support ship till her decommissioning in 1987. Nowadays, she is a museum ship that can be visited in Vlissingen.
HNLMS A was an A-class minesweeper minesweeper of the Royal Netherlands Navy that was scuttled by her crew during the Battle of Java. She was later re-floated and repaired by the Japanese and converted into auxiliary submarine chaser Cha-113 or No. 113.
