Moored alongside · Powering Rotterdam since sunrise

A new dawn for port and city energy

The Mother
Barge

A power barge tied up at your quay, feeding the port, its tugs and the city a clean 40 MWe from one container-scale molten salt reactor. We begin on a ship that stands still — and prove, year by quiet year, that the same core can safely go to sea.

Bring it to our port How it works

PB-MSR-40 · Moored Alongside

Delivering

40 MWe · clean

To shore

110 kV

Doc. PB-MSR-40 / Rev. 05.26

Alongside at Dawn

Scale 1:900 · Moored Elevation

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Length: 110 mBeam: 36 mDraft: 4.8 mBerth: alongside, permanently mooredClass: PB-MSR-40

§ How it works

Docked today.
Seagoing tomorrow.

The fastest honest route to nuclear power at sea runs through a ship that isn't moving yet. Prove it at the quay, then let it sail.

Still water first

We start where the sea stands still: tied up alongside the quay. No roll, no pitch, no motion in the salt loop — the calmest possible place to prove a reactor, shift after shift, before anything ever sails.

Power for the port and the city

One cable bridge to the quay substation. Cranes, reefers and berthed ships stop burning fuel, electric tugs top up between jobs, and whatever is left flows straight into the city grid.

Safe by physics, then seaworthy

Liquid salt at ordinary pressure — nothing to explode, and if it ever runs hot, gravity drains it into a safe tank. Every docked year of that behaviour is what earns the next step: the same core, certified to move.

§ The road to sea

From a ship that
stands still to one that sails.

Nobody should put a reactor to sea on a promise. So we earn it in order — still water, sheltered water, open water — and the harbor gets clean power the whole way.

Phase 01 · Now
01 — Moored at the quay
The barge lies still alongside, cables ashore. Port and city draw clean power while every system is logged in the calmest conditions a reactor can be asked to work in.
Phase 02 · Next
02 — Sheltered water
Same hull, same core, now riding a real swell inside the breakwater. Motion, list and sloshing are measured against years of dockside data before anything changes.
Phase 03 · The point
03 — Under way at sea
A reactor certified to make power while the ship moves — the step that puts clean nuclear energy into shipping itself. Everything before it exists to earn this one.

§ Where it goes

Anywhere with
a berth deep enough.

The PB-MSR-40 is built for years of quiet service alongside an ordinary quay, then gentle redeployment under IMO tow protocols — each berth another season of proof toward power at sea.

USE-001

Ports that breathe

Moored along the quay, cables bridged to the terminal substation. Cranes, reefers and berthed ships run on silent, emission-free power instead of burning fuel at the dock — and the neighborhood wakes up to cleaner air.

USE-002

Electric tug mornings

Two fast-charge couplers on the barge's outboard face. A whole electric tug fleet swaps energy between shifts in under 45 minutes without ever leaning on the local grid.

USE-003

A city on the waterfront

Whatever the port doesn't use flows into the municipal grid — steady baseload for homes, hospitals and water treatment, delivered from a hull that never leaves its berth.

§ By the numbers

Engineered for
the next century
of gentle global trade.

PB-MSR-40 is a moored power barge: a steel hull tied up alongside an ordinary quay, carrying a container-scale molten salt reactor and feeding the port and the city through one cable bridge. Built for a 60-year hull life, with hot-swappable reactor modules every twelve — and designed from the keel up to one day do the same underway.

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

Request Full Spec Sheet

PB-MSR-40 · Platform DatasheetREV 05.26

Platform Class: PB-MSR-40 · Moored Power Barge
Reactor Module: Container MSR · 12 m ISO-derived
Thermal Output: 500 MWt
Electrical Net: 40 MWe continuous
Shore Connection: 2 × 110 kV · port + city grid
Refuel Cycle: 144 months (12 yr)
CO₂ Avoided: 210,000 t / year
Hull: 110 × 36 m · 4.8 m draft
Displacement: 18,900 t
Berth Requirement: 6 m depth alongside, standard quay
Commissioning: ≤ 90 days from arrival

§ Four Promises to the Harbor

Passive Drain

If it ever overheats, gravity gently pours the fuel into a safe tank. No pumps, no power needed.

Atmospheric

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

Moored & Steady

Tied up alongside, the hull barely moves. Every system is proven in still water long before it ever sails.

IAEA Aligned

Certified under the floating-plant safety framework, with the port authority on site.