Dutch ASWF frigate programme delayed to 2033 as Belgium
The Dutch ASWF frigate programme faces a three-year delay to 2033 due to structural design issues, while Belgium remains undecided on its participation
The Dutch ASWF frigate programme has been delayed by three years, with the first vessel now expected in 2033. Dutch State Secretary for Defence Derk Boswijk informed the House of Representatives of the schedule slip on 18 September 2026.
Technical challenges drive schedule slip
The delay stems from structural stability challenges identified during the design phase. The baseline hull required enlargement and redesign to maintain proper stability margins while preserving space and weight reserves for future capability upgrades. The hull was lengthened by 7 metres, increasing the vessel's displacement significantly.
| Specification | Original Design | Revised Design |
|---|---|---|
| Hull Length | Not specified | Increased by 7 metres |
| Displacement | 5,500 tonnes | 7,200 tonnes |
Programme history and revised timelines
Under the original 2018 Memorandum of Understanding, delivery of the first frigate was scheduled for 2025. Following a cost increase of approximately 40%, a revised timeline targeted delivery for 2029 or 2030. The Dutch defence programme monitoring document of 20 May 2026 confirmed the new 2033 deadline. A source familiar with the program said, "This marks the second major delay for the project."
Belgium reviews future role in ASWF programme
Belgium is reassessing its participation in the joint programme. The country issued a Request for Information earlier in summer 2026 to assess market availability of alternative frigate designs. Media reports have suggested Belgium may withdraw in favour of purchasing Italian-built FREMM EVO frigates. However, no final decision to exit the ASWF programme has been taken. A source with knowledge of the matter stated, "Media reports asserting Belgium has chosen an alternative platform are premature."
Ongoing cooperation and next steps
Bilateral discussions between the Dutch and Belgian Ministries of Defence remain active. Maintaining deep naval cooperation is a stated priority for both defence establishments. The Dutch-Belgian Joint Steering Committee convened on 1 September 2026. A broader project update and official responses to parliamentary inquiries are scheduled for the Dutch Parliament in the fourth quarter of 2026.
The ASWF programme calls for four frigates specialised in detecting and countering submarines, with the Netherlands and Belgium each slated to receive two vessels to replace their M-class frigates. Contracts were signed on 29 June 2023, and detailed engineering work continues to integrate Thales Nederland's detection and combat systems into the revised design. A formal decision on whether Belgium will proceed with ASWF or pivot to an alternative will be made between mid-October and the end of 2026.
