A Zillow for vessels is only as good as its data. This is the working catalogue of every feed, valuation reference, registry, regulator, marina, harbour, builder, tracker, and industry source HulloShips can draw on — with how each one is accessed, what it covers, what it costs, and how well it fits. The catalogue now runs to 431 real sources across 19 categories — one group for each database the platform maintains (marinas, harbours, shipyards, ship storage, cruise lines, yacht builders, brokers, competitors, superyachts and ships-for-sale). The full sortable worksheet is below; the cards underneath group the same sources by purpose. Every entry is a genuine organisation, dataset, registry or API — nothing invented. It keeps growing.
Click any column header to sort. Click a row to expand notes on access, terms of service, and attribution. Use the filters to narrow by category. Sources marked no scrape are licensed/feed-only — we never scrape them.
| # | Source | Category | What it provides | Access | API | Coverage | Cost | Fit |
|---|
Access key: XML/CSV feed licensed data feed · REST API programmatic · membership via trade-body / partner · manual public lookup · no scrape license/feed only — do not scrape. API column: can we programmatically pull it? REST API · Partner API · XML/CSV feed · No / manual · Scrape only ❌. ⚔ rival = a consumer-facing boat marketplace that competes with HulloShips (still a possible data source). Fit: ★★★ core to HulloShips · ★★ useful · ★ situational.
HulloShips’ inventory comes from licensed data feeds (broker MLS / aggregator XML & CSV exports we’re entitled to republish), direct broker submissions through our own listing form, and data partnerships with valuation and registry providers. Most listing portals explicitly prohibit scraping in their terms — so we don’t. Every row above is tagged with its sanctioned access method.
Feed comparison →Submit a listing (brokers) →Outreach drafts →
Don’t boil the ocean. Three moves unlock a working marketplace + valuation tool before any heavy data deal closes.
The easiest first feed — an established broker network with a documented data-feed program. Fastest path to real for-sale inventory in /ships/.
Stand up /list/ so brokers add boats directly — zero licensing cost, builds supply and relationships in parallel with feed talks.
The reference engine for the HulloValue “Zestimate for ships.” Pursue a data/partner arrangement to benchmark and seed the model.
The supply of vessels on the market — the rows in the worksheet. Most expose data via broker feeds (XML/CSV) or partner APIs, not open access.
International yacht brokerage listings with a documented broker data-feed program.
Boats Group (YachtWorld / boats.com / Boat Trader)boatsgroup.comThe dominant network; BoatWizard powers many sites. Feed/API by partnership only.
IYBA MLSiyba.orgThe brokers’ shared listing system — access flows through member relationships.
Apollo Duckapolloduck.comGlobal boat & ship listings, sail to commercial.
BoatShop24boatshop24.comEuropean Boats Group marketplace network (UK/EU storefronts).
Boat24boat24.comLarge multilingual Central-European boat marketplace.
Yachtallyachtall.comLarge European boat marketplace.
Scanboatscanboat.comNordic / Scandinavian boat classifieds network.
Boatshedboatshed.comGlobal brokerage network known for many-photo verified listings.
Band of Boatsbandofboats.comBeneteau-group European listings platform.
De Valkdevalk.nlMajor Northern-European brokerage with detailed listings.
Rightboatrightboat.comBoats plus commercial & passenger-vessel listings.
Network Yacht Brokersnetworkyachtbrokers.comUK/EU multi-office brokerage network with shared inventory.
United Yacht Salesunitedyacht.comLarge US brokerage with a big shared-listing pool.
Galati Yacht Salesgalatiyachts.comMajor US Gulf/East-coast brokerage & dealer.
iNautia / Cosas de Barcosinautia.comLeading Spanish-language boat marketplace (Iberia + LatAm).
ABYA brokersbritishmarine.co.ukUK Assn of Brokers & Yacht Agents — member listing network.
Large-yacht sales run through a tight circle of specialist houses and one trade MLS — the inventory and comps consumer portals never see.
Superyacht-focused MLS used by luxury brokers; the trade’s shared large-yacht inventory.
Denison Yachtingdenisonyachting.comMajor US superyacht brokerage & new-build representation.
Fraser Yachtsfraseryachts.comGlobal superyacht sales, charter & management house.
Burgessburgessyachts.comLeading large-superyacht brokerage & new-construction advisor.
Northrop & Johnsonnorthropandjohnson.comLong-established luxury-yacht sales & charter brokerage.
Camper & Nicholsonscamperandnicholsons.comHeritage superyacht brokerage, charter & management.
Edmistonedmiston.comHigh-end superyacht sales & charter advisory.
Ocean Independenceoceanindependence.comGlobal superyacht brokerage & management network.
Worth Avenue Yachtsworthavenueyachts.comUS luxury-yacht brokerage with strong large-yacht inventory.
SuperYacht Timessuperyachttimes.comSuperyacht market intelligence, fleet database & sales data.
BOAT Internationalboatinternational.comSuperyacht editorial + market intelligence and the global order book.
Cargo ships, tankers and bulkers trade through sale-and-purchase desks at the major shipbroking houses — the data spine for the commercial side of HulloShips.
The largest shipbroker; S&P, research, fleet & price data (Clarksons SIN).
Braemarbraemar.comGlobal shipbroking & S&P with research and valuations.
Simpson Spence Young (SSY)ssyonline.comIndependent shipbroker; dry-bulk & tanker S&P and research.
Gibson Shipbrokersgibsons.co.ukTanker-focused shipbroker with S&P and market research.
Howe Robinson Partnershowerobinson.comContainership & dry-bulk shipbroking and S&P.
Affinity (Shipping)affinityship.comShipbroker offering S&P, research and valuations.
Charter fleets overlap heavily with the for-sale market — many listed yachts also charter, and charter rates are a pricing signal for HulloValue.
Where owners sell directly. Most of these ban scraping — the honest play is link-out (send buyers to their searches) except where an official API exists. eBay is the one we can actually ingest; Boat Trader is reachable through the Boats Group partner API.
The one classifieds source we can ingest: an official, free Browse API returns real-time private-seller & dealer boat listings. Sanctioned — not scraping.
Boat Trader (Boats Group)boattrader.comLeading US dealer + private-seller marketplace; part of Boats Group, so reachable via the official Boats Group Inventory API (see §1).
Craigslistcraigslist.orgHuge local supply but no API, scraping prohibited — Craigslist won landmark suits (3Taps; RadPad $60.5M). Link-out only.
Facebook Marketplacefacebook.com/marketplaceProbably the biggest private-seller pool, but no public API, scraping prohibited (Meta ToS, actively litigated). Link-out only.
OfferUpofferup.comUS mobile-first classifieds where boats appear; no public ingest API — link-out only.
The proof that a “Zestimate for ships” works — existing valuation engines and price books to benchmark against.
Automated daily valuations across the world fleet — the model HulloShips brings to consumers.
SoldBoats (Boats Group)soldboats.comClosed-sale comparables — the brokers’ sold-price database.
ABOS Marine Blue Bookabosmarine.comIndustry price guide for boats & engines.
J.D. Power / NADA marinejdpower.com/boatsUsed-boat value guide widely used by lenders.
Boats Group market indexboatsgroup.comAggregate listing-and-search market trend reporting.
IMO numbers, particulars, ownership, flag — the spine that ties a listing to a real, identified vessel.
IMO numbers and official ship particulars.
Equasisequasis.orgFree ship safety & particulars database.
Lloyd’s List Intelligencelloydslistintelligence.comAuthoritative ownership, movements & risk on the commercial fleet.
Sea-web (S&P Global)maritime.ihs.comThe IHS Markit / S&P Global ship database — particulars, ownership & history.
Paris MoUparismou.orgPort-state-control inspection & detention records.
Tokyo MoUtokyo-mou.orgAsia-Pacific port-state-control inspection records.
USCG NVDCuscg.mil/nvdcUS vessel documentation lookups.
Flag-state registers confirm registration, ownership and tonnage — a second identity check on top of the IMO number.
One of the largest open registries (IRI-administered).
Panama Ship Registryamp.gob.paThe world’s largest flag by tonnage.
Liberian Registryliscr.comMajor open registry (LISCR-administered).
UK Ship Registergov.uk/uk-ship-registerThe British flag register (MCA).
Class status that buyers, lenders, and insurers rely on. The IACS members carry most of the world’s tonnage.
Classification society + class records.
DNVdnv.comClass society; vessel register & rules.
ABS (American Bureau of Shipping)eagle.orgUS classification society + record of vessels.
Bureau Veritasbureauveritas.comMarine classification & certification.
RINArina.orgItalian class society; yacht & commercial.
ClassNKclassnk.or.jpNippon Kaiji Kyokai — major commercial class register.
Korean Register (KR)krs.co.krIACS member; strong Asian commercial coverage.
China Classification Society (CCS)ccs.org.cnChina’s class society — large and growing tonnage.
Live and historical positions, plus the analytics layer built on top — for enrichment, verification and the commercial side.
AIS positions, photos & specs; commercial API.
VesselFindervesselfinder.comAIS tracking + vessel database; API tiers.
Spire Maritimespire.comSatellite-AIS data via enterprise API.
FleetMonfleetmon.comAIS tracking, vessel database & port-call API.
Kplerkpler.comCommodity-flow & vessel analytics built on AIS.
Windwardwindward.aiMaritime risk & behavior analytics on the global fleet.
Cruise ships and ferries change hands through specialist desks, not consumer portals — plus the trade body for market context.
Authoritative dimensions and particulars to normalize every listing to a clean per-model record.
Repos, surplus, seized and estate vessels — a real, fragmented supply stream worth surfacing.
US recreational-boating market statistics.
ICOMIAicomia.orgThe global marine-industry federation — world boating statistics.
BoatUSboatus.comConsumer boating data, ownership cost & insurance.
RYArya.org.ukUK Royal Yachting Association — boating data & standards.
MYBAmyba-association.comThe worldwide yachting association — broker standards & contracts.
US Superyacht Assnussuperyacht.comUS superyacht trade body — sector contacts & data.
The marina database — directories, reservation networks and trade bodies. Live slip and berth availability comes through reservation-platform and operator partnerships; the trade associations supply the operator contacts and quality ratings.
The largest consumer marina directory — amenities, fuel, depth & contacts worldwide.
Dockwadockwa.comMarina-reservation network with profiles & transient-slip availability (partner API).
Snag-A-Slipsnagaslip.comUS slip-booking marketplace with participating-marina inventory.
Waterway Guidewaterwayguide.comCruising-guide marina & anchorage database for US/Bahamas/Caribbean.
ActiveCaptain / Navionics (Garmin)garmin.comCrowd-sourced marinas, anchorages & chart POIs; Web API for licensed integrations.
Pick a Pierpickapier.comMarina-management + berth-booking platform with live availability (partner API).
Safe Harbor / Suntex / MDLmarina operatorsThe largest marina-operator networks — one partner reaches slips across hundreds of properties.
AMI · TYHA · ICOMIA Marinasmarina trade bodiesNational & global marina associations — member directories, statistics & Gold Anchor ratings.
The harbour/port database starts from authoritative open references — the NGA World Port Index and UN/LOCODE — then layers in the major port authorities worldwide and the open nautical-chart data behind them.
The authoritative free global directory of ports & harbours — the harbour database spine.
UN/LOCODEunece.orgThe UN standard identifiers for ports & locations — the canonical key for every port.
Major port authoritiesRotterdam, Antwerp, Singapore…Rotterdam, Antwerp-Bruges, Singapore (MPA), LA/Long Beach, NY-NJ, Hamburg, Felixstowe, Busan, Jebel Ali, Shanghai — ~90 real authorities catalogued.
Sea-web Ports / Lloyd's List Portscommercial directoriesDetailed berths, drafts & facilities for ports/terminals worldwide (subscription).
NOAA Coast Survey (ENC)nauticalcharts.noaa.govUS electronic charts — harbour outlines, channels & depths as open data.
OpenSeaMap · EMODnetopen nautical dataOpen, crowd-sourced harbours/marinas & European bathymetry under open licences.
The builders database — the authoritative source for model dimensions, layouts and standard equipment used to normalise every listing to a clean per-model record, from production sailboats to custom superyachts and commercial newbuilds.
Feadship, Lürssen, Oceanco, Heesen, Amels, Benetti, Sanlorenzo — delivered-fleet specs for the top of the market.
Production sail buildersBeneteau, Jeanneau, Hanse…Beneteau, Jeanneau, Bavaria, Hallberg-Rassy, Oyster, Nautor Swan, X-Yachts — canonical sailboat model specs.
Motor-yacht buildersAzimut, Sunseeker, Princess…Azimut, Sunseeker, Princess, Ferretti, Riva, Pershing, Fairline — powerboat & motor-yacht model libraries.
Catamaran buildersLagoon, Fountaine Pajot…Lagoon, Fountaine Pajot, Leopard, Sunreef, Catana, Outremer — multihull model specs.
US production buildersSea Ray, Boston Whaler…Sea Ray, Boston Whaler, Grady-White, Hatteras, Viking, Tiara, Chris-Craft, Nordhavn — mass-market & sportfish.
Commercial shipbuildersHHI, Samsung, Fincantieri…Hyundai, Samsung, Hanwha Ocean, CSSC, Fincantieri, Meyer Werft, Damen — newbuild commercial & cruise reference.
Free, sanctioned government and EU datasets — tides, currents, charts and forecasts — that add navigation and met-ocean context to marina, harbour and listing pages at zero licensing cost.
Free, documented API for US tides, currents, water levels & met-ocean data.
NGA Maritime Safety (MSI)msi.nga.milNavigation warnings, nautical publications & the World Port Index via open data/API.
Copernicus Marine (CMEMS)marine.copernicus.euEU open ocean physics & forecasts — currents, waves, sea-surface temperature.
NOAA / NWS Marineweather.gov/marineUS coastal/offshore forecasts & warnings via open feeds & APIs.
The model to emulate: automated, comps-based value estimates with a public range.
Schema.org Vehicle / Product / Offerschema.orgStructured-data types to make vessel pages machine-readable + rich-result eligible.
IndexNowindexnow.orgInstant search-index submission for new/changed listings.