Legs down · Powering Rotterdam since sunrise

A new dawn for port energy

The Mother
Barge

A self-elevating droneship that plants its legs, lifts its deck above the swell, and quietly feeds ports and tug fleets a clean 40 MWe — from a single container-scale reactor.

Bring it to our portHow it works
The Motherbarge moored at a harbor, bathed in warm golden sunrise light over calm waterJU-MSR-40 · Legs Down

Delivering

40 MWe · clean

Air gap

18 m

Doc. JU-MSR-40 / Rev. 04.26

Jack-Up at Dawn

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WATERLINESEABEDA ─ MSR-40 CONTAINER COREShip it, plug it in · 500 MWtB ─ MODULE GANTRYHot-swap in ≤ 72 hC ─ HVDC SHORE ARM40 MWe · 150 kV DCD ─ TUG FAST-CHARGE2× 6 MW couplersE ─ JACK-UP LEG110 m · 68 m stroke
Deck: 92 × 54 mLegs: 4 × 110 mAir gap: 18 mTransit draft: 5.2 mClass: JU-MSR-40

§ How it works

Safe by physics.
Kind to the harbor.

01

Container-scale reactor

The whole 40 MWe core arrives in a shipping-container-shaped module. Ship it, bolt it to the deck, plug it in. When a fresh module rolls up twelve years later, a gantry swap takes under 72 hours.

02

Above the swell

Four lattice legs plant on the seabed and lift the deck 18 metres clear of the waves. Storms pass beneath. The reactor never rolls, and the shore cable never flinches.

03

Safe by physics

The fuel is a liquid salt at ambient pressure. Nothing to explode, nothing to melt down — if it gets too warm, gravity gently drains it into a safe tank. Calm by design.

§ Where it goes

Anywhere with
a berth deep enough.

The MB-01 class is designed for years of quiet dockside service and gentle international redeployment under IMO tow protocols.

Ports that breathe
USE-001

Ports that breathe

Legs planted just off the quay, deck raised above the wake, HVDC arm reaching to shore. Cranes, reefers, and berthed ships run on silent, emission-free power — and the neighborhood wakes up to cleaner air.

Electric tug mornings
USE-002

Electric tug mornings

Two fast-charge couplers at the leg base. A whole electric tug fleet swaps energy between shifts in under 45 minutes without ever leaning on the local grid.

A light after the storm
USE-003

A light after the storm

Sails in, plants its legs, powers up. Within 72 hours hospitals, desalination, and water treatment come back online — a steady sunrise for coasts that need one most.

§ By the numbers

Engineered for
the next century
of gentle global trade.

JU-MSR-40 is a self-elevating droneship: a flat autonomous deck that plants four lattice legs on the seabed and lifts a container-scale molten salt reactor clear of the swell. Every subsystem is built for a 60-year hull life with hot-swappable reactor modules every twelve.

One Motherbarge ≈ 180,000 households breathing cleaner air every single morning.

Request Full Spec Sheet
JU-MSR-40 · Platform DatasheetREV 04.26
Platform Class
JU-MSR-40 · Jack-Up Droneship
Reactor Module
Container MSR · 12 m ISO-derived
Thermal Output
500 MWt
Electrical Net
40 MWe continuous
Refuel Cycle
144 months (12 yr)
CO₂ Avoided
210,000 t / year
Deck
92 × 54 m, autonomous
Jack-Up Legs
4 × 110 m lattice, 68 m stroke
Air Gap (on station)
18 m above MSL
Transit Draft
5.2 m · 18,900 t
Deployment Time
≤ 72 hours

§ Four Promises to the Harbor

Passive Drain

If it ever overheats, gravity gently pours the fuel into a safe tank.

Atmospheric

No high-pressure containment, no explosive failure mode — just liquid salt.

Legs Down

Planted on the seabed, the deck rides out storms 18 metres above the swell.

IAEA Aligned

Certified under the floating-plant safety framework.