WECDIS & Combat System Interface Unit (WIU CSIU)

Defence Equipment and Support
Direct award
1 April 2027 to 31 March 2029

Provision of replacement WECDIS Interface Units and Combat System Interface Units to address equipment obsolescence. The scope encompasses the full lifecycle of design, manufacture, supply, and installation of hardware and software, alongside associated assurance services to maintain operational capability and safe sustainment of Royal Navy maritime systems.

Open the official notice

Awarded value: £12.5m; As published
Published: 22 June 2026
Awarded: 28 September 2026; OSI Maritime Systems
Contract length: 24 months; Ends 31 March 2029

What the contract covers

Direct award

Design, manufacture, supply, and installation of maritime navigation and combat system interface hardware and software for naval defence applications.

Design, manufacture, installation and assurance of a replacement Warship Electronic Chart Display and Information (WECDIS) Interface Unit (WIU) and Combat System Interface Unit (CSIU)

Terms and requirements

Contract type: Direct award
Procedure: Direct award
Initial term: 24 months
Contract dates: 1 April 2027 to 31 March 2029
Certifications asked for: None stated
Lots: 1
Suitable for SMEs: Yes
Suitable for charities and social enterprises: Yes
Category: Goods
CPV codes: 34933000, 51240000

Services in this contract

Marine navigation equipment, charts and publicationsMain service£197k typicalReplacement warship WECDIS and combat system interface units, design, build, install

Lifecycle

Published
22 June 2026
Contract awardedto OSI Maritime Systems
28 September 2026
Contract starts
1 April 2027
Contract ends
31 March 2029

The buyer

Defence Equipment and Support

Type: Locked
Contracts, 24 months: Locked
Recorded value: Locked
Typical contract: Locked
Nautical charts contracts, 24 months: Locked

Buys most

Contact details

Name: Locked
Email: Locked
Website: Locked
Address: Locked

See everything Defence Equipment and Support buys

The supplier

OSI Maritime Systems

Contracts won, 24 months: Locked
Value won, 24 months: Locked
Buyers, 24 months: Locked
Size: Locked

Main buyers

See everything OSI Maritime Systems has won

Similar nautical charts contracts and prices

35 nautical charts contracts were awarded in the last 24 months. See who won them and what they went for, next to this one.

See who won them →

Cite this contract

Link: https://bidskim.com/tender/3630735/wecdis-and-combat-system-interface-unit-wiu-csiu
Buyer reference: 715876480
Open contracting ID: ocds-h6vhtk-06ba08
Last checked: 5 November 2026

Defence Equipment and Support. WECDIS & Combat System Interface Unit (WIU CSIU). Contract award, 22 June 2026. BidSkim, https://bidskim.com/tender/3630735/wecdis-and-combat-system-interface-unit-wiu-csiu (accessed 5 November 2026).