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Instant access to every vessel manual

AI answers with sourcesCertificate trackingVessel passportFleet-wide search
584
manuals indexed per vessel
37k+
searchable passages
< 3s
to a sourced answer
100%
vessel-level isolation
A night every engineer knows

When something breaks,
the manual hides.

Thousands of pages across scans, copies and shared drives — and the answer is needed at 02:40, not after breakfast. Vessalis turns that search into one question.

M/T ATLANTIC · Indian Ocean02:40 LT
● Alarm — engine room
FRESH WATER GENERATOR
LOW VACUUM
VACUUM 82%EJECTORSEA TEMP 31°
The product

Everything your fleet knows,
working for you

Sourced answers, certificate expiry tracking, an auto-built vessel passport and fleet-wide search — purpose-built for ship operators.

Sourced answers

Ask anything. Get an answer you can verify.

Every answer is grounded in your vessel's own documents — with the exact file and page. The chat keeps context, so follow-ups feel natural. If it isn't in the docs, the assistant says so.

How does the fresh water generator work?

Search by meaning, not keywords

Find any procedure, certificate or record even when you don't know what the file is called.

Lifeboat release procedure
92%
EEXI technical file
87%

Certificates that warn you first

Upload certificates — AI reads names and expiry dates. Email reminders go out 30 days before anything expires.

IOPP Certificate
312d
Safety Equipment
24d

Auto vessel passport

AI builds the equipment register from the manuals — makers, models, specs. One click to PDF.

MAIN ENGINESulzer 6RTA72
AUX BOILERMitsubishi MAC-30B

Private & isolated

Every vessel's documents live in their own isolated index — never shared, never mixed across companies.

Per-vessel data isolation
Your documents stay yours

One question, whole fleet

Ask across every participating vessel at once — you decide which vessels take part.

1 query4 vessels

Vessel-level data isolation

Each vessel has its own knowledge base. One vessel's query can never reach another's data.

Vessel AVessel B

Exact page citations

Click any source to open the manual at the cited page — verify in one click.

Onboard portal for the crew

One shared login per vessel — every PC onboard gets its own private chat history.

How it works

From documents to answers in four steps

01

Subscribe a vessel

Add a vessel and start a per-vessel subscription.

02

Upload documents

Drop in manuals, certificates and records — 10 files or 300, anytime.

03

Indexed automatically

Every upload joins the vessel's private knowledge base on its own — even scans are read by AI. Add more later, it just keeps up.

04

Crew asks the AI

Your team gets instant, source-backed answers on the vessel portal.

See it in action

Answers you can trust — with the source

Every answer cites the exact document and page. If it isn't in the vessel's documentation, the assistant says so — no guessing, no hallucinations. Exactly what inspectors and auditors expect.

  • Document name + page on every answer
  • Click a source to open the manual at that page
  • Scoped to one vessel — never cross-contaminated
MV SAPPHIRA · AI assistant
What's the maximum oxygen content in the inert gas?
Inert gas supplied to the cargo tanks must not exceed 5% oxygen by volume. The high-oxygen alarm is set at 8% and trips the inert gas system — confirm the analyzer calibration before each cargo operation.
INERT GAS SYSTEM…M611000.pdf · p.14 CARGO OPERATIONS…F140000.pdf · p.142
Security

Your documents
stay yours.

Manuals, certificates and plans are commercially sensitive — we built Vessalis the way maritime compliance demands.

Per-vessel isolation

Each vessel has its own knowledge base and index. A query for vessel A can never touch vessel B's data — by architecture, not by policy.

Never used to train AI

Your documents answer your questions. They are not training material — not for us, not for anyone.

Encrypted and contained

Documents are encrypted in transit and stored per company and vessel in private object storage.

You control every access

Granular permissions per person and per vessel. Crew see only their own vessel — and what they ask stays private.

Optional IP restriction

Lock a vessel's portal to the ship's own connection, so it only opens onboard.

MAIN ENGINE MANUAL.pdfCLASS CERTIFICATE.pdfCARGO PLAN.pdfIOPP CERTIFICATE.pdf
Vessel A Vessel B

Two vessels, two sealed knowledge bases — no path between them.

Pricing

Simple, per-vessel pricing

One price per vessel per month. Annual billing saves 15%. Volume discounts as your fleet grows.

$750/ vessel / month

or $638/vessel/month billed annually

  • Dedicated vessel knowledge base & AI assistant
  • Private portal on [vessel].vessalis.com
  • Up to 200GB document storage
  • Unlimited AI queries · up to 10 users
  • Source-backed answers with citations
  • Email support · onboarding in 7 business days
Request a demo

Volume discounts

Automatic, based on your fleet size.

1–5 vessels$750/vessel/mo
6–20 vessels$600/vessel/mo
21+ vessels$500/vessel/mo
Also available: document migration, custom integrations, premium support and enterprise consulting.
FAQ

Frequently asked questions

Every answer is generated only from your vessel's own documents and cites the exact file and page. If the documentation doesn't contain the answer, the assistant says so rather than guessing.

Bring every vessel document one question away

Reduce vetting and detention risk with instant, source-backed access to your fleet's documentation.