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History
Netherlands
Name	HNLMS Hydra
Operator	Royal Netherlands Navy
Builder	Scheepswerf Visser, Den Helder
Laid down	11 June 1992
Launched	11 September 1992
Commissioned	20 November 1992
Identification	IMO number: 9034171 MMSI number: 245990000 Callsign: PD2231 Hull number: A854
Status	In active service
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General characteristics
Type	Cerberus-class diving support vessel
Displacement	340 t (335 long tons) full load
Length	37.8 m (124 ft 0 in)
Beam	8.76 m (28 ft 9 in)
Height	13.2 m (43 ft 4 in)
Draft	1.50 m (4 ft 11 in)
Propulsion	2× Volvo Penta TADM 122A
Speed	10.5 knots (19.4 km/h; 12.1 mph)
Crew	6

HNLMS Hydra (A854) is a diving support vessel of the Royal Netherlands Navy.

History

Hydra was laid down on 11 June 1992 at Scheepswerf Visser in Den Helder (now part of the Damen Group) as the last of four new diving support vessel. She was launched later that year on 11 September 1992 and commissioned on 20 November 1992.

During a refit in 1997, Hydra received a 10.5-metre (34 ft) extension in the mid-section and a new bow thruster among other things. The lengthening increased the displacement from 223 t (219 long tons) to 340 t (335 long tons).

It is expected that Hydra will reach the end of her lifecycle in 2026/27.

References

1. ^ "Duikvaartuigen" (in Dutch). Ministerie van Defensie. Retrieved 14 June 2023.
2. ^ "Cerberusklasse duikvaartuigen specificaties" (in Dutch). Marineschepen.nl. Retrieved 14 June 2023.
3. ^ "Hr.Ms. Hydra" (in Dutch). Onze Marinevloot. Retrieved 14 June 2023.
4. "Vervanging van tien Nederlandse marineschepen ineens" (in Dutch). Marineschepen.nl. Retrieved 15 February 2023.

v t e Cerberus-class diving support vessels
Royal Netherlands Navy	Cerberus Argus Nautilus Hydra
Preceded by: Triton class Followed by:

• Cerberus-class diving support vessel
• Auxiliary ships of the Royal Netherlands Navy
• Royal Netherlands Navy
• 1992 ships