Readily available
Sourced from ordinary commercial supply, so production is never held up waiting on a specialist part.
Production
Built for affordable mass, from parts anyone can buy.
Our platforms are designed to be made quickly and cheaply in the UK — composite hulls printed and reinforced in-house, commodity components throughout, and a navigation method that needs no signal to stay accurate.
The principle
Cheap to build is a capability, not a compromise.
A persistent watch over the North Atlantic is a numbers game. A platform that costs a fraction of a conventional hull, builds in days from off-the-shelf parts, and can be replaced without a bespoke supply chain is what turns a clever prototype into deployable mass.
01 — The hull
Composite hulls: 3D-printed, carbon-reinforced.
We build the chassis of our underwater platforms from 3D-printed parts, reinforced with carbon fibre to take pressure and stand up to long periods at sea.
Printing the structure means we can iterate a design in days, not months, and tune the geometry for strength where it is needed and weight where it is not. The carbon-fibre reinforcement carries the pressure load and the fatigue of sustained submersion. The result is a hull that performs like a far more expensive one, at a fraction of the cost — and a spare part is a print job away, not a procurement cycle.
Chassis3D-printed structure
ReinforcementCarbon fibre
Build timeDays, not months
ComponentsCommodity / off-the-shelf
Unit costA fraction of conventional
RepairPrinted spares, field-replaceable
Affordable mass
Performance you would expect from a far more expensive hull — at a fraction of the cost, and replaceable on demand.
02 — The supply chain
Commodity parts, deliberately.
Every component is chosen to be readily available and inexpensive. No exotic materials, no single-source dependency, no part that takes a year to arrive.
Resilient to disruption
Multiple suppliers for everything that matters. If one route closes, the line keeps moving.
Fast to iterate
Cheap, printed structure means a design change is tested in hardware within days of the idea.
Cheap to scale
Low unit cost is what makes a distributed fleet — rather than a single exquisite asset — affordable.
Simple to sustain
A small set of common parts keeps the spares inventory light and the maintenance burden low.
UK assembly
Printed, reinforced and assembled in Britain, keeping the build and the know-how onshore.
Surface fixGPS / GNSS when available
Surface commsGSM when in range
Off-grid methodData-driven dead reckoning
Model roleFuses inputs, corrects drift
External connectivityNot required to hold position
Emissions on taskMinimal — low signature
03 — Navigation
Knowing where it is with the grid switched off.
On the surface, the platform takes a GPS fix and can report over GSM when it is in range. Below the surface, or far from any network, neither is available — so the position has to be worked out from the boat itself.
Our onboard model treats navigation as a data problem. It continuously reads what the platform is doing and what is around it, and computes a position from that alone — no signal needed. Because it relies on nothing it has to transmit or receive, the platform can stay dark for the length of a sortie, which is where the stealth comes from: there is nothing to detect.
The inputs
The data that becomes a position.
The model fuses a continuous stream of onboard and environmental measurements. Each one is a weak signal on its own; together, cross-checked over time, they pin down where the platform is.
- 01
Propeller speed & control actions
How hard the platform has been driving, and every steering and depth action it has taken, timed precisely — the basis of how far and in what direction it has travelled.
- 02
Water temperature
Temperature varies with location and depth in known ways. Tracking it helps place the platform within the water column and across a body of water.
- 03
Current & drift
The water moves the platform whether it is driving or not. Estimating that set and drift is essential to an honest position.
- 04
Depth
A continuous depth profile constrains the vertical position and, combined with terrain models, helps fix the horizontal one.
- 05
Timing
When each action and reading occurred. Navigation by data is navigation over time, so the clock underpins all of it.
The output is an accurate, continuously corrected position estimate with a known confidence — not a guess, and not a claim of perfection it cannot keep. When a surface fix becomes available, the model uses it to reset any accumulated drift.
Low signature
Nothing to transmit, nothing to receive, nothing to detect. Stealth as a consequence of the design, not a bolt-on.