Decentralised ledger
Maintenance records and documents nobody can quietly rewrite
A planned maintenance system is only as good as the trust an owner, charterer or class surveyor places in its history. Full Ahead seals every job, certificate and evidence file into an append-only chain of fingerprints — so “this was done before the inspection” stops being a claim and becomes something anyone can check.
Chained, not just logged
Every entry carries the fingerprint of the entry before it. Rewriting one historic job breaks every fingerprint after it, so backdating is arithmetically detectable rather than a matter of trusting an audit log.
Fingerprints, never your data
Only a SHA-256 fingerprint of the record is sealed. Commercial terms, crew names and defect detail never leave your workspace, so proof can be shared with an owner or surveyor without disclosure.
Append-only at the database level
The database physically refuses to update or delete a ledger entry — including for us as the vendor. Corrections are new entries; the original state stays visible as history, which is exactly what an ISM auditor wants to see.
Verify a published checkpoint
Been handed a Full Ahead checkpoint reference by an operator? Paste it here. This page reads only public checkpoints — no vessel, crew or commercial data is exposed.
Questions technical managers ask
- Is this a real blockchain or a database with hashes?
- It is a hash-linked chain with the same tamper-evidence property a blockchain provides: each block commits to its parent, so history cannot be altered without detection. It runs without a public token or gas fee, and public checkpoints let any outside party verify the chain independently — you get the audit guarantee without asking a ship's crew to hold a crypto wallet over a satellite link.
- What can actually be sealed?
- Maintenance jobs and their completions, statutory and class certificates, evidence documents and photographs, requisitions and spare-part stock movements. Anything sealed can be re-verified at any moment against the live record.
- Can a record still be corrected after it is sealed?
- Yes, and it should be. The correction is sealed as a new entry, and verification flags the record as amended while preserving the original fingerprint. Nothing is silently overwritten — the sequence of states is the evidence.
- How does an auditor verify a checkpoint?
- A checkpoint is a fingerprint plus an entry count, published where anyone can read it. If the records shown during an audit still produce that fingerprint, they are the same records that existed when the checkpoint was published. If a single character changed, the fingerprint will not match.
- Does it work offline?
- Yes. Work done at sea is queued in the offline outbox with its original timestamp and sealed as soon as any link appears, so a vessel out of coverage for a week still produces an unbroken chain.
Put your records beyond dispute
Tell us your fleet size and we will show the ledger sealing your own record types in a live walkthrough.
Talk to us
Tell us about your fleet — we'll reply with a straight answer.
Ask about migrating an existing PMS, offline operation at sea, class and flag audits, or what your fleet would actually cost. No sales sequence, no discovery call gate.
- Answer from a person, usually same working day
- Data migration from spreadsheets or legacy PMS
- Pricing in EUR, published — nothing hidden