29,031 wrecks.
In your pocket.
500 miles offshore.

DeepSix Dive Log ships with a curated database of 29,031 diveable wrecks — merged from national heritage registers and global datasets — every continent covered — cleaned, deduplicated, and tiered by diveability. The ~2,346-wreck diveable tier is bundled inside the app, so the map works on a liveaboard with zero bars of signal.

Every wreck gets a dossier: vessel history, cause of loss, depth, period-correct ensign, curated imagery, and an AI narrative in your own language. And when the record is wrong, you can fix it — for yourself immediately, and for every other diver through human review.

The boat has no Wi-Fi. Your wrecks don't care.

The diveable tier — roughly 2,346 wrecks a recreational or technical diver can actually reach — is bundled inside the app binary. No download, no account, no network. Open the map 500 nautical miles offshore and the pins are there, clustered and tappable, each one leading to a full dossier.

The complete 29,031-wreck set downloads from wreckdb.deepsixdive.com when you have a connection, and caches on-device. The bundle is the baseline; the download is the upgrade. Database updates are version-manifested, so a correction folded this week reaches your map without an app update.

National registers, every continent. Every license honored.

The database is merged from the sources that actually know where the wrecks are — hydrographic offices and national heritage inventories — plus Wikidata for vessel identity and DeepSix's own curated research. Each source was evaluated license-first before a single record was ingested, and each dossier shows where its facts came from.

Attribution isn't a footnote page you'll never open. A record researched from published sources shows "Researched from" with the links right on the dossier; MaSS records carry their full CC BY-SA attribution; diver-contributed corrections credit the diver. We cite the people whose work we built on.

We show you what we don't know.

Most wreck maps draw every pin with the same confident dot, whether the position came from a survey-grade fix or a 1950s estimate. DeepSix doesn't. A wreck whose coordinate is a curated estimate — or is published so coarsely it can't be precise — draws a dashed ring on the map, sized to the actual uncertainty. The ring scales with the map, so it states how approximate the position really is instead of decorating the pin.

The math is arithmetic, not vibes. A coordinate quoted to two decimal places admits roughly ±550 m of uncertainty; the Prinz Eugen is published at 8.75, 167.6833, and her ring says so. A donor-log coordinate quoted to four decimal places (±5.5 m) — the Carnatic and Giannis D on Abu Nuhas, the Bell Island group — draws no ring at all, because where a number came from and how good it is are different questions.

Some wrecks are graves. Every diver should know.

The database carries a respect status on the dossier itself, so a shipped war-grave or memorial designation shows for all divers — not just the one who happened to research it. The Fujikawa Maru, Heian Maru, and Toa Maru in Chuuk Lagoon are marked as war graves. The Edmund Fitzgerald carries her memorial status and Ontario Heritage Act protection.

On the map, war-grave and heritage wrecks get their own bright blue pin — distinct from the gold of an enhanced wreck or the green of an artificial reef — so the status is visible before you tap, not buried in paragraph four. Dive them; many are legally and respectfully diveable. But dive them knowing what they are.

A 1917 wreck flies a 1917 flag.

Wreck dossiers fly the flag the vessel actually sailed under — not the modern successor state. Ten public-domain historical ensigns ship in the app: the German Empire, Austria-Hungary, the Qing dynasty, the Kingdom of Great Britain, the Crown of Castile, the Kingdom of France, and more. An SMS-prefixed hull gets the Imperial German ensign, not the Bundesflagge. Historical states whose flag never changed — Empire of Japan, Russian Empire, the Dutch Republic — correctly reuse the modern asset.

The flag is derived from the vessel, not the sink location: a German battleship scuttled in Scapa Flow is German, however British the water above her.

Vessel history, told in your language.

Tap a pin to see the wreck's name and year, then ⓘ to open the dossier: vessel type, cause of loss, build and sinking dates rendered in your locale, depth, category glyph (ship, submarine, aircraft, vehicle, structure, artifact scatter), and — for 763 wrecks and counting — a curated, license-vetted image with photographer credit. Period photos of the Coron Bay 1944 fleet. SMS Seeadler under sail as the Pass of Balmaha.

Add your own AI key and DeepSix generates a wreck narrative — the story of the vessel, woven from the dossier's facts. It's generated natively in your language, not written in English and translated after, so a Dutch diver reads Dutch prose, not Dutch-flavored English. Controlled fields like cause of loss and category localize from the catalog with English fallback.

You were on the wreck. The register wasn't.

National registers get things wrong, and the diver who was just there is the one who knows. DeepSix's answer runs in both directions. Down: the catalog ships to you, read-only, one way. Up: when you spot an error, your correction writes a personal overlay that applies instantly on your own map, your dossier, and every dive that references the wreck — the bundle itself is never mutated. Then, if you choose, you can send the correction to DeepSix.

Contributions are voluntary and anonymous — facts and coordinates only, with an explicit preview and consent step before anything leaves the device. Every submission is reviewed by a human before it's folded into the database; nothing auto-publishes. Contact info is optional, for the "we folded your wreck in" reply. The full data flow is disclosed in our privacy policy.

Filling in a form is the boring part, so the AI can do it: paste a dive-operator or reference link and your own model extracts the structured facts — name, type, flag, dates, coordinates, depth — into the correction. Where the link disagrees with something you typed, you get a yours-versus-link chooser. No silent clobbering.

Contributions can carry a photo, too — starting with your own shots from dives within 2 km of the wreck. Open licenses only, spelled out in plain language; a rights affirmation; credit if you want it; and EXIF stripped by on-device re-encoding before upload, so your photo arrives without your metadata. Never auto-published.

Not every remarkable place is a shipwreck.

The same offline-first delivery, the same curation standard, and the same contribution flow also power Wonders — a curated layer of the underwater world's genuinely remarkable places, from the Great Blue Hole to the shark wall at Fakarava South Pass. When one of your dives lands on one, DeepSix tells you.