A standard low-motion offshore platform, leased bare under long-term contract. You bring the topsides and run your business. Seaways owns the hull and carries it.
30,000 tonnes of deck payload. Fixed interface points. No shipyard programme, no bespoke engineering cycle, no hull residual risk on your balance sheet.
This is not a new hull form
Ring-pontoon, four-column, deep-draft platforms are the standard deepwater production host now in service around the world. MPSS is that architecture — built to one fixed standard, and leased instead of sold.
This hull form carries hydrocarbon production, in the most demanding motion environments offshore, on units operating right now. The architectural risk was retired by the industry, with the industry's own capital.
Class societies have approved this hull form repeatedly, for other owners. MPSS is not a first-of-a-kind approval problem — unit certification proceeds on build, against a form the societies already know well.
The MPSS design holds a Lloyd's Register pre-certification and an independent hazard review that identified no inherent safety weakness, supported by physical model testing at the University of Glasgow.
The asset
Column size and spacing, ring-pontoon geometry, operating draft, primary scantlings, deck grid and load-out points, mooring foundations. Qualified once, built repeatedly, identical every time.
Topsides layout, utility tie-in capacity, riser porch fit-out, and how much of the payload envelope you take. The deck is yours. Suitable for steel catenary risers where the application calls for them.
Markets
Carbon storage, offshore substations, floating wind, offshore compute, hydrogen, desalination, subsea tiebacks and offshore logistics all need the same thing underneath them: stable, heavy, repeatable space at sea. None of them wants to become a marine engineering company to get it.
SCR-host platform for field development.
Seawater cooling, no grid queue, no land permitting.
Floating converter and grid-hub platforms.
Compression, injection and monitoring.
SWRO under long-term sovereign offtake.
Turbine, storage and dispatchable generation.
Relocatable, physically isolated capability.
Transhipment, bunkering, O&M basing.
Why leasing changes the economics
| Build your own host | Lease an MPSS | |
|---|---|---|
| Engineering cycle | A bespoke FEED programme before steel is cut | Done once, for the standard hull |
| Time to revenue | Gated by the hull programme | Gated by your topsides only |
| Hull residual risk | Yours, to the end of field life | The lessor's |
| Marine capability needed | In-house or contracted | None — hull and station-keeping are provided |
| End of use | Decommission; residual close to scrap | Hand back; hull is re-leased elsewhere |
| Balance sheet | Heavy capital item | Contracted operating cost |
Provenance
Primary documents are released to qualified counterparties under NDA. Unit class certification is issued on build, in the normal way.
Hull one is open
If you need stable, heavy, relocatable space at sea and you do not want to build and own the platform to get it, there is a conversation to have.