Awarded contract

Platform Data Management Systems 4 (PDM4) Obsolescence Recovery

Details

Buyer: Ministry of Defence
Supplier(s): Ultra Maritime
Value: £3,000,000
Topic: Parts of radio and radar equipment
Published: 27 June 2025
Source: uk:find_a_tender

Tender description

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 Lot 1: 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

Timeline

Completed: Award date31 December 2024
Completed: Award published27 June 2025
Current notice

About the buyer

The Ministry of Defence is a ministerial department that runs its acquisition and procurement activity through a dedicated commercial function, led by the Director Commercial. Defence Equipment & Support buys, supports and supplies equipment such as jets, warships and armoured vehicles for the armed forces. The Defence Infrastructure Organisation plans, builds and maintains the defence estate separately from equipment procurement. Suppliers can register on the Defence Sourcing Portal, the department's end-to-end eProcurement system for contract opportunities. Many purchasing agreements sit on the MOD Framework Library, its central list of framework routes to market.

Procurement spend from central entities makes up 66% of overall UK public spend.

Over the past 5 years, most of the Ministry of Defence's contract awards have been in IT services, architectural and engineering services and repair and maintenance.

Relevant CPV codes

32352100 · Parts of radio and radar equipment

Decision makers

Connect with the people behind this procurement.

Job title	Phone number	Work email
Head of Procurement	+44 •••• ••••••	••••••••@ministry-of-defence.gov
Commercial Director	+44 •••• ••••••	••••••••@ministry-of-defence.gov
Procurement Manager	+44 •••• ••••••	••••••••@ministry-of-defence.gov
Category Lead	+44 •••• ••••••	••••••••@ministry-of-defence.gov
Senior Buyer	+44 •••• ••••••	••••••••@ministry-of-defence.gov
Contracts Manager	+44 •••• ••••••	••••••••@ministry-of-defence.gov