StanFlex

During the early 1980s, the Royal Danish Navy (RDN) required replacements for three classes of minor war vessel, but could not afford to replace all 22 ships on a one-for-one basis.Scott, Versatility the key to Denmark's evolving navy Instead of building dedicated replacements for each role, the RDN came up with the idea for a single vessel design which could be modified to assume a particular role when needed. Equipment common to all roles would be built into the ship, while mission specific payloads would be built into modules, which could be fitted into standardised slots aboard the ship when needed. This modular payload system came to be known as "Standard Flex", or "StanFlex" for short.

Feasibility studies during 1983 and 1984 led to the design of the Standard Flex 300 vessel (later named the {{sclass|Flyvefisken|patrol vessel|4}}); 16 of which could replace the 22 previous vessels. These were {{convert|54|m|ftin|adj=on}} long, 320-ton patrol vessels, fitted with one Standard Flex slot forward and three aft. The modules themselves were designed by the Naval Materiel Command and Promecon A/S. Construction commenced in July 1985, with 14 vessels (2 having been cancelled in 1993) commissioned by mid-1996. As other warship types were replaced, the new vessels were designed to carry StanFlex modules.

Stanflex modules are constructed by Monberg & Thorsen.{{ cite journal | first =Richard | last = Scott | title = Flexing a snap-to-fit fleet | journal = Jane's Defence Weekly | date = 2001-11-01 }} Each module is housed in a stainless steel container measuring {{convert|3|m|ft}} in length, {{convert|3.5|m|ft}} in width, and {{convert|2.5|m|ft}} in height. Precision-machined flanges ensure that the module accurately mates up with connections for power, ventilation, communications, water, and data. The weapon or system is mounted on the roof of the module, while the machinery, electronics, and supporting equipment are housed within.

Modules are usually installed and replaced by a 15-ton capacity mobile crane. A module can be swapped out and replaced within half an hour, and after system testing completed, the ship is ready to deploy within a few hours. However, refresher training for the ship's crew will take significantly longer. Standardised consoles are fitted in the combat information centre: the console's role is defined by the software installed, which can be quickly replaced.Naval Studies Board, Technology for the United States Navy and Marine Corps, 2000-2035, p. 30 The ease of installation and use is compared by naval personnel to another Danish product: Lego.

• Unused modules can be stored in controlled conditions, reducing the need for preventative maintenance.
• Ships do not need to be taken out of service when equipment requires maintenance, and vice versa.
• New weapons and systems can be installed on the vessels by fitting them to a module, instead of refitting the entire ship.
• When a ship or class is removed from service, the modules can be reused by other vessels. Similarly, as they do not have to be built into the ship, modular weapons and systems do not have to be factored into the purchase cost of a new vessel: in 2006, a proposed 6,000-ton frigate design for the KDM was predicted to cost DKK 1.6 billion per ship (USD {{Format price|{{To USD|1600000000|DNK}}}}), while similar projects in other European nations were slated to cost between DKK 2.6 billion and DKK 6.3 billion (USD {{Format price|{{To USD|2600000000|DNK}}}} to {{Format price|{{To USD|6300000000|DNK}}}}).
• The multi-role ships are slightly less efficient than a dedicated ship in a particular role, but the ability to be quickly reequipped for other roles more than makes up for this.

As of 2001, the KDM inventory of StanFlex modules included:

By 2006, there were 101 units of 11 types.

{{update-section|date=September 2022}}

{{dynamic list}}

File:F357THET+P561SKDN.jpg

{{As of|2012}}, nine ship classes were capable of using StanFlex modules.

• Flyvefisken-class patrol vessel
• 1 slot forward, 3 slots aft.
• {{sclass|Diana|patrol vessel|0}} patrol vessel
• 1 slot aft.Fish, Denmark commissions environmentally friendly Diana-class craft Diana-class ships normally operate with a storage or anti-pollution module fitted. Because of the position of the RHIB dock, they cannot embark the variable depth sonar module (which is normally deployed over the stern). The Diana class can be used to transport, but not operate, all other modules.
• {{sclass|Absalon|frigate|0}} command ship
• 5 slots on weapons deck.{{cite journal | last = Lok | first = Joris Janssen | title = New Danish combat support ships offer greater flexibility for NATO operations | journal = Jane's International Defense Review | date = 2006-06-01 | issn = 0020-6512 | volume = 39 | number = 6 }} Because of the weapons deck's position, only missile-firing, SIGINT/ELINT and storage modules can be used.
• {{sclass|Niels Juel|corvette|0}} corvette
• 2 slots aft.Werthein (ed.). The Naval Institute Guide to Combat Fleets of the World, p. 154 Unlike other classes, the Niels Juel-class corvettes were modified for StanFlex during their mid-life modernisation. This class was scrapped in 2013.{{cite web |title=Environmentally Shipbreaking in Denmark |url=http://www.maritimeparts.com/Maritimeparts.com-Blog/Quick-demolution-of-3-corvettes.html |archive-url=https://archive.today/20130411083940/http://www.maritimeparts.com/Maritimeparts.com-Blog/Quick-demolution-of-3-corvettes.html |url-status=dead |archive-date=2013-04-11 }}
• {{sclass2|MSF|drone minehunter|1}}
• 1 slot aft.
• {{sclass2|MRD|drone minehunter|1}}
• 2 slots.
• {{sclass|Iver Huitfeldt|frigate|0}} frigate
• 6 slots.Werthein (ed.). The Naval Institute Guide to Combat Fleets of the World, p. 153
• {{sclass|Thetis|patrol vessel|0}} frigate
• 1 slot forward, 2 slots aft
• {{sclass|Knud Rasmussen|patrol vessel|0}} patrol vessel
• 1 slot forward, 1 slot aft.{{cite news |url=http://www.navalhistory.dk/english/theships/classes/knudrasmussen_class%282007%29.htm |title=Knud Rasmussen Class (2008-) |date=2007-11-19 |publisher=Royal Danish Navy |archive-url=https://web.archive.org/web/20090401233457/http://www.navalhistory.dk/english/TheShips/Classes/KnudRasmussen_Class(2007).htm |url-status=dead |archive-date=2009-04-01}}{{cite news |url=http://www.casr.ca/id-danish-naval-projects-rasmussen.htm |title=An Overview of Current, On-Going Danish Naval projects 2005-2009 Knud Rasmussen class Ice-Resistant OPV (Offshore Patrol Vessel) |date=May 2008 |publisher=Canadian American Strategic Review |archive-url=https://web.archive.org/web/20090919080901/http://www.casr.ca/id-danish-naval-projects-rasmussen.htm |archive-date=2009-09-19 |url-status=live |access-date=2009-08-02}}

{{Reflist}}

• {{cite book |last=Naval Studies Board |title=Technology for the United States Navy and Marine Corps, 2000-2035: Becoming a 21st-Century Force |publisher=National Academies |location=Washington D.C. |year=1997 |series=Compass Series |volume=6: Platforms}}
• {{cite book |title=The Naval Institute Guide to Combat Fleets of the World: Their Ships, Aircraft, and Systems |editor=Wertheim, Eric |publisher=Naval Institute Press |location=Annapolis, MD |year=2007 |edition=15th |isbn=978-1-59114-955-2 |oclc=140283156 |url=https://books.google.com/books?id=TJunjRvplU4C}}

• {{cite journal |last=Fish |first=Tim |date=21 December 2009 |title=Denmark commissions environmentally friendly Diana-class craft |journal=Jane's Navy International |publisher=Jane's Information Group}}
• {{cite journal |last=Lok |first=Joris Janssen |date=24 April 2006 |title=New Danish combat support ships offer greater flexibility for NATO operations |journal=International Defence Review |publisher=Jane's Information Group}}
• {{cite journal |last=Scott |first=Richard |date=1 October 1999 |title=Versatility the key to Denmark's evolving navy |journal=Jane's Navy International |publisher=Jane's Information Group |volume=104 |issue=8}}
• {{cite journal |last=Scott |first=Richard |date=31 October 2001 |title=Flexing a snap-to-fit fleet |journal=Jane's Defence Weekly |publisher=Jane's Information Group}}

Category:Royal Danish Navy

Category:Military equipment of Denmark