Source: https://tendernation.io/opportunities/01a13bbd-20d5-734c-bc40-62d105d76168/pdm4-obsolescence-recovery pending GB open procedure Suitable for SMEs # PDM4 Obsolescence Recovery [Defence Equipment and Support](https://tendernation.io/buyers/defence-equipment-and-support) Open field Estimated value £2,634,000 Published 24 Jun 2025 Deadline Rolling deadline ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Open procedure Anyone can submit a full tender; there is no shortlisting stage. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender There is a requirement for the Maritime Command & Control, Targeting, Navigation, and Communications Team (C2TNC) within Sense, Decide and Communicate (SDC) to provide obsolescence recovery for the Platform Data Management System 4 (PDM 4) fitted to Vanguard Class Submarines. PDM In-Service Support is currently provided through contract CSA/3049. PDM4 has been in operation since the early 1990s with an expected in-service period until 2015. The original Out of Service Dates (OSD) has been extended by up to 100%, and no provision of additional stores was made when the OSDs were extended. As a result, work is now required to address the high-risk obsolescence issues, where there are low stores and items which require regular Survey and Repair. Failure to do this will adversely impact the operational capability of the CASD Vanguard Class Submarines. Currently the two main areas of concern are (1) Power Supply Units (PSUs) of which there are three variants and (2) PEC SIOs. Both items are critical to the safe operation of PDM4. ## CPV classification Navigation equipment Source Find a Tender (UK) · Notice ocds-h6vhtk-054840-2025-06-24T12:33:11+01:00 [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-054840-2025-06-24T12:33:11+01:00) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Defence Equipment and Support: past awards and live tenders](https://tendernation.io/buyers/defence-equipment-and-support) [Sector More Transport equipment & vehicles tenders](https://tendernation.io/sectors/transport-equipment-vehicles) ## More tenders like this [Fire engines – Löschfahrzeug mit Bergeausrüstung LF-B · Marktgemeinde Natternbach · 11 days left · 30 Oct 2026](https://tendernation.io/opportunities/01a15183-3f0d-7330-9b63-15c71c296ead/austria-fire-engines-loschfahrzeug-mit-bergeausrustung-lf-b) [Driving simulators – Dostawa i zakup symulatora ciągnika rolniczego, kombajnu zbożowego, ładowarki teleskopowej, wózka jezdniowego (widłowego) oraz samochodu osobowego w jednym urządzeniu – 2 sztuki · Zespół Szkół Centrum Kształcenia Rolniczego Im. Władysława Grabskiego · 35 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a15183-3fb8-726c-b5f9-207c29d0524c/poland-driving-simulators-dostawa-i-zakup-symulatora-ciagnika-rolniczego-ko) [Miscellaneous spare parts – Mercedes Benz transporto priemonių atsarginės dalys · Gynybos Resursų Agentūra Prie Kam · 7 days left · 26 Oct 2026](https://tendernation.io/opportunities/01a15183-2a19-7030-8c6b-4ec58460f4ff/lithuania-miscellaneous-spare-parts-mercedes-benz-transporto-priemoniu-atsar) [Special-purpose motor vehicles – Road-Rail Truck with Rubber Tyres and Rail Wheels · Pääkaupunkiseudun Kaupunkiliikenne Oy · 43 days left · 1 Dec 2026](https://tendernation.io/opportunities/01a15183-14f3-71d6-a448-343d9d1a19a7/finland-special-purpose-motor-vehicles-road-rail-truck-with-rubber-tyres-and) [Motor vehicles for the transport of goods – Timmerbil JGY · Upphandlingskontoret · 30 days left · 17 Nov 2026](https://tendernation.io/opportunities/01a15183-0c3d-711e-a061-282eb71f83ed/sweden-motor-vehicles-for-the-transport-of-goods-timmerbil-jgy) [Control, safety or signalling equipment for roads – Acord cadru de furnizare și punere în funcțiune de echipamente și dotări suplimentare, aferent obiectivului de investiții „Supraînălțare treceri pietoni și intersecții în vecinătatea unităților de învățământ și a zonelor aglomerate · Sector 3 Al Municipiului Bucuresti · 36 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a15183-5cd1-7175-8971-1cd72f0b2a0c/romania-control-safety-or-signalling-equipment-for-roads-acord-cadru-de-fur)