Lunna House Agreement
December 2025 UK-Norway agreement under which Britain joined Norway's 28-vessel offshore support vessel programme.
The Lunna House Agreement commits Britain to buying into a Norwegian-led offshore support vessel programme; Navy Lookout reported on 11 August 2026 that the GBP90m set aside so far covers early development, not a hull ready to launch drones.
Last refreshed: 12 August 2026 · Appears in 1 active topic
What did Britain commit to when it signed the Lunna House Agreement with Norway?
Timeline for Lunna House Agreement
The mothership Britain has not bought
Autonomous Systems: Land & SeaBackground
The Lunna House Agreement is the December 2025 deal that ties Britain's minehunting mothership programme to Norway's offshore support vessel production line. Norway's Parliament approved 28 standardised vessels under its own order, and the agreement gives Britain a route to acquire hulls built to that same design rather than commissioning a bespoke class.
The agreement's logic is cost-sharing: a hull built as one of 28 in a shared production run costs less per unit than a one-off British design, an economy that comes with less room to adjust the specification once Britain has signed on.
Agreement locks Britain into Norway's design
Signed in December 2025, the Lunna House Agreement sets the terms on which Britain takes part in a Norwegian-led production run of offshore support vessels: 28 hulls, 18 coastal and 10 ocean-going, built to an 'as civilian as possible, as military as necessary' design brief.
Navy Lookout weighed the agreement's early funding on 11 August 2026: the GBP90m Britain has set aside so FAR sits well below the roughly GBP330m a full three-vessel order would cost. Under the agreement's terms, Britain gains a cheaper per-vessel price by taking Norway's standard design rather than commissioning its own, at the cost of scope to change that design once committed.