Orbex sCarbon offsets
The offset built to last.
Every Sea Ledgers certificate retires Orbex sCarbon: engineered reductions from recycled metals, issued only after they happen, independently verified and locked on chain.
What sCarbon is
Real reductions from real metal.
Recycled metal replaces mined and smelted metal and avoids a large share of its emissions. sCarbon turns those measured savings into verified tonnes.
Each tonne is certified under the ORBEX Smart Carbon Protocol, aligned with ISO 14064‑3 and the UN CDM methodology AMS‑III.BA, and backed by the production records of the metal itself.
- Certificate of Origin for every recycled batch
- Carbon Intensity Score for every tonne
- Serial number on the Orbex Registry

Why it wins
Six reasons no other offset compares.
Permanent by nature
An engineered, process based reduction. No forest to burn, no soil to release. Once avoided, the tonne stays avoided.
Issued after it happens
Credits are issued only once the reduction has occurred and been verified. You never buy a promise about future tonnes.
Independently verified
Third party verification to ISO 14064‑3, built on plant and production records rather than models.
Six tests of additionality
Prior consideration, regulation, common practice, financial impact, barriers and the use of funds covenant must all pass before a tonne is credited.
Every tonne funds the next
At least half of net carbon revenue goes to renewable energy in the recycling chain or to low carbon recycling research.
Counted once, never twice
Serialized, locked at retirement and limited to a single claim. A tonne earns one credit, once.
Side by side
sCarbon against the usual offset.
| Orbex sCarbon | Typical forestry and avoidance credits | |
|---|---|---|
| Source | Engineered: recycled metal replacing primary metal | Trees, soils or avoided deforestation |
| Permanence | Permanent by nature, no buffer pool needed | Exposed to fire, pests and logging, backed by buffer pools |
| Timing | Issued after the reduction is verified | Can be issued against projected or estimated tonnes |
| Evidence | Production records, Certificate of Origin and Carbon Intensity Score | Satellite imagery and modelled baselines |
| Reinvestment | At least 50% of net carbon revenue funds further decarbonization | No reinvestment requirement |
| Record | Orbex Registry serial plus a Hedera token with supply keys disabled | Registry entry |
| Remedies | Clawback with a 20% step up and cancellation if the covenant is missed | Varies by standard |
On your certificate
Proof your guests can scan.
Your yacht retires sCarbon 1:1 against emissions measured from its own fuel records. The certificate shows exactly what was retired and where to check it.
- Orbex Registry serial, retired in the yacht's name
- Hedera token with admin, wipe and supply keys set to null, so the supply can never change
- Tonnes, period and voyage taken from the ledger
- QR code to the on chain record
- Optional warranty against verification failure

The numbers
Simple, measured, final.
Retire the best tonne on the water.
Tell us the yacht and the dates. We will send the tonnes and the price.