Multi-purpose Hydrographic survey ships with a secondary role in mine countermeasures.
Can achieve 16.9 knots with newly scraped and conditioned hull.
| 2000-jun-19 | Ordered | Ordered  H87 HMS Echo | |
| 2000-jun-19 | Ordered | Ordered H88 HMS Enterprise | |
| 2002-mar-04 | Launched | Launched H87 HMS Echo | |
| 2002-may-02 | Launched | Launched H88 HMS Enterprise | |
| 2002-dec | Homeport | Homeport H87 HMS Echo at HMNB Devonport | |
| 2003-mar-07 | Commissioned | Commissioned H87 HMS Echo | |
| 2003-oct-17 | Commissioned | Commissioned H88 HMS Enterprise | |
| 2004 | Deployment | Deployment H88 HMS Enterprise Maiden deployment to Mediterranean | |
| 2005 | Deployment | Deployment H88 HMS Enterprise Middle East deployment | |
| 2007 | Deployment | Deployment H88 HMS Enterprise West African deployment | |
| 2008-jul-25 | Deployment | Deployment H88 HMS Enterprise At Portsmouth 25-27 Jul for Meet Your Navy 2008 | |
| 2009 | Deployment | Deployment H88 HMS Enterprise East Africa and Gulf deployment | |
| 2011-jan-11 | Port Visit | Port Visit H87 HMS Echo visit to Malta, until 15 Jan. | |
| 2013 | Deployment | Deployment H87 HMS Echo departed for 18-month surveying deployment in the Mediterranean, Red Sea, Indian Ocean and the Gulf. | |
| 2013-sep | Refit | Refit H88 HMS Enterprise Completed refit at A and P Falmouth, which included hull re-finishing, upgrades to satellite comunications, propulsion deep maintenance and hydrographic echo sounder. | |
| 2014-jun | Deployment | Deployment H88 HMS Enterprise departed HMNB Devonport for 35 month deployment, initially in the Mediterranean. Returned 17 Apr 2017. | |
| 2015-jul-03 | Deployment | Deployment H88 HMS Enterprise Operation Weald relieved HMS Bulwark on station in the Mediterranean for anti people-smuggling operations. | |
| 2015-dec-01 | Deployment | Deployment H88 HMS Enterprise 2 crewmen being medevac by Spanish frigate Canarias helicopter SH-60B Seahawk | |
| 2017-jul | Deployment | Deployment H88 HMS Enterprise Assumed flagship role of NATO SNMCMG2 in Mediterranean Sea during Jul 2017. | |
| 2017-oct-07 | Port Visit | Port Visit H88 HMS Enterprise visited Touon. | |
| 2018 | Refit | Refit H87 HMS Echo dry-docking period in Falmouth, included a through cleaning of the hull bottom below the waterline. | |
| 2019-apr | Refit | Refit H88 HMS Enterprise 6 week dry-docking period in UK Docks Teesside, Middlesbrough. | |
| 2019-apr-30 | Port Visit | Port Visit H87 HMS Echo visited Batumi, during 3 weeks of operations in the Black Sea. | |
| 2020-may | Refit | Refit H87 HMS Echo 6 week dry-docking period in UK Docks Teesside, Middlesborough. | |
| 2020-aug-10 | Deployment | Deployment H88 HMS Enterprise arrived in Beirut from Cyprus, to remap approaches and port sea floor as part of UK aid to Lebanon, following Port Explosion on 4 Aug. | |
| 2020-nov-01 | Refit | Refit H88 HMS Enterprise maintenance work at UK Docks, Middlesbrough | |
| 2022-jun-30 | Decommissioned | Decommissioned H87 HMS Echo | |
| 2023-mar-31 | Decommissioned | Decommissioned H88 HMS Enterprise at HMNB Devonport. | |
| 2025-jul | | H87 HMS Echo laid up in 3 Basin at Portsmouth | |
Aircraft