# Abbreviations

**CSB** - Crowdsourced bathymetry

**CSV** - Comma separated values

**DCDB** - IHO Data Centre for Digital Bathymetry

**ECDIS** - Electronic Chart Display and Information System

**GEBCO** - General Bathymetric Chart of the Ocean

**GNSS** - Global Navigation Satellite System

**IHO** - International Hydrographic Organization

**NCEI** - National Centers for Environmental Information

**NMEA** - National Marine Electronics Association

**NOAA** - National Oceanic and Atmospheric Administration