Type 31 Frigate Construction (Inspiration Class)
Rosyth Dockyard, Fife, Scotland, UK · 2019–Ongoing (contract awarded 2019, first vessel HMS Venturer emerged 2025, serial production ongoing) · £1.25bn (contract for five frigates), with an additional £140m in reworks/cost adjustments by Babcock.
The judgement call
Account-gated at launchThe Type 31 program aims to deliver a class of general-purpose frigates at a lower cost point than previous complex warships, emphasizing efficiency and modularity. - The project has faced challenges with cost overruns and reworks, highlighting the complexities inherent in modern warship construction and the importance of early design maturity. - Babcock's investment in new facilities at Rosyth, including a large assembly hall, demonstrates a commitment to revitalizing UK shipbuilding capabilities. - The program is a key part of the Royal Navy's fleet modernization, providing essential capabilities for global operations.
Key engineering challenges
Adapting a proven Danish frigate design (Iver Huitfeldt-class) for Royal Navy requirements and UK shipbuilding standards. - Managing the construction of multiple complex warships in parallel, requiring efficient production lines and supply chain management. - Overcoming late-stage reworks and design challenges that led to significant cost adjustments. - Integrating advanced combat systems and technologies into the frigates.
Project facts
- Client / owner
- Royal Navy, Ministry of Defence
- Lead contractor
- Babcock International
- Lead designers
- Odense Maritime Technology (OMT) (base design - Iver Huitfeldt-class frigate hull)
- Project type
- new build (vessel/fleet programme)
- Scale
- Five general-purpose frigates; 28-metre-tall vessels; multiple hulls progressing in parallel.
- Disciplines
- Naval Architecture; Marine Engineering; Systems Engineering; Electrical Engineering; Mechanical Engineering; Defence Engineering; Shipbuilding
- Standards & frameworks
- Royal Navy standards, UK Ministry of Defence procurement regulations, international shipbuilding standards.
Sources: Babcock International: Type 31 (https://www.babcockinternational.com/what-we-do/product/design-develop-and-manufacture/type-31/) - Navy Lookout: Building the Royal Navy’s general purpose frigates: Type 31 programme update (https://www.navylookout.com/building-the-royal-navys-general-purpose-frigates-type-31-programme-update/) - Royal Navy: Take a bow, HMS Venturer - first Type 31 frigate emerges from... (https://www.royalnavy.mod.uk/news/2025/may/27/20250527-venturer-emerges) - Forces News: Defence firm Babcock foots the £140 million bill for reworks on Type... (https://www.forcesnews.com/technology/sea-vessels/babcock-foots-ps140-million-bill-reworks-type-31-frigate) - Wikipedia: Type 31 frigate (https://en.wikipedia.org/wiki/Type_31_frigate)