VesselTwin keeps one private, searchable record for the boat you actually own: specs, documents, service, parts, photos, and the upgrades that make it yours.
Free for individual owners during early access · Upload your first manual in under a minute
The problem
Every repower, electronics refit, canvas swap, and plumbing fix takes your vessel a step further from the original datasheet. Five years in, the manual in the glove box barely describes the boat underneath you.
Most owners cope with binders, camera rolls, and half-remembered receipts. When you sell, survey, or break down far from home, that history either saves you — or it costs you.
What it does
Built for the parts of ownership no factory brochure covers — the rewiring, the replacements, the upgrades that make the boat yours.
Every repower, rewire, refit, and replacement — with the parts, photos, costs, and the why behind each one.
Drop a measurement right on a photo — thru-hull diameter, hatch opening, cushion cutout. The number lives on the image.
Manuals, surveys, invoices, warranties — scanned, searchable, with AI pulling out dates, vendors, and costs.
Serial numbers, impeller sizes, belt specs, and compatible alternatives — ready the next time something fails.
Stored in metric, shown in your units. Overwrite the factory number when you swap a tank — the twin stays accurate.
Photos organized by where they are on the boat — engine room, lazarette, helm — not by upload date.
Tech-forward setup
Upload the PDF that came with your boat — or a photo of the spec sheet on the engine cowling. Our AI will try to pull out make, model, engine, dimensions, capacities, electrical, and fuel — and pre-fill the form so you can review, fix anything off, and start logging the interesting parts: the things that have changed since.
The other half
Somewhere out there, another owner already solved the problem you’re about to Google at 10pm. VesselTwin is built so that knowledge travels with the hull, not the owner.
Live now
Owner-built catalog of makes, models, and variants — search it when you add a boat.
One page per make, model, and year, with specs, photos, guides, and known issues.
“8 of 24 owners reported seacock leaks around year 5” — caught before it catches you.
What similar boats actually do between services, rolled up from real owner logs.
Every logged serial grows the graph: “this impeller fits 6 Yanmar models.”
Owner-authored walkthroughs with steps, parts, tools, costs, and lessons learned.
Which rigger do Tartan 34 owners actually use? Model-scoped shop and tech reviews.
Threaded replies for fitment questions and what owners did differently.
Follow a hull family and get alerts when owners publish new guides or reviews.
The first structured community signals are live: model pages can show owner-shared guides, known issues, maintenance intervals, compatible parts, and vendor reviews. The roadmap now pushes those signals into richer trends, cost ranges, and project planning as more owner data lands.
On the roadmap: Email digests · Cloneable build templates · Refit cost ranges · Sister-ship meetup map.
Private by default. HIN, registration, and marina location are stripped from anything you share — contribute anonymously, share with one mechanic, or go fully public, all from the same record.
You’ve made the boat yours over years. VesselTwin remembers what you’ve forgotten.
Multiple hulls, multiple crews, one consistent record for each vessel and every hand-off.
Owners share the exact vessel record with you before you’re even at the dock. Less guesswork, fewer callbacks.
A full modification history at closing — more than a stack of receipts and a hopeful seller.
Free for individual owners. Add your first boat, upload a manual, and log what your hull has really become.
VesselTwin is in early access — features, availability, and pricing may change as we learn from early owners.