2017 CE–2026 CE
Seabed 2030 assembles an open global bathymetric map
Oceans, navigation & cartography · Hydrography & bathymetry · Institutions & standards
The Nippon Foundation and GEBCO launched Seabed 2030 to assemble scattered soundings into an openly available global bathymetric grid. As of 20 April 2026, the project reported 28.7 percent of the seafloor mapped to its standard, about 104 million square kilometers; this is a dated snapshot, not a completed map.
Precision, calendar, and review
- Start
- year · no uncertainty qualifier in this record
- End
- year · no uncertainty qualifier in this record
- Calendar and convention
- Historical-era years; the source calendar is not identified. No conversion of days is assumed.
- Year zero
- The scale goes from 1 BCE to 1 CE without year zero. Changing era names changes labels only.
- Documentary review
- Date not recorded
Reading the date: duration of a process.
Sources
- 1. seabed2030.org (opens in a new tab)
Source provenance and scope
- Publication date
- 2026-04-20
- What this date describes
- The cited source or edition; it may postdate the historical event.
- Source updated
- 2026-04-20
- Bibliographic date checked
- 2026-09-23
- Date evidence
- Declared in the cited source’s publisher metadata.
The correspondence between this reference and individual claims has not yet been itemized.
- 2. www.gebco.net (opens in a new tab)
Source provenance and scope
- Publication date
- Not identified in metadata; document review pending
- Bibliographic date checked
- 2026-09-23
The correspondence between this reference and individual claims has not yet been itemized.
This record is an editorial synthesis. Consult the sources to check claims and their limits. Chronological relationships alone do not establish causation.