Many hydrographic and oceanographic agencies have moved or are moving towards gridded bathymetric products. However, there is no accepted format to allow these grids to be exchanged while maintaining data and metadata integrity. This paper describes the Open Navigation Surface (ONS) Project, which aims to fill this gap. The ONS Project is an open-source software project designed to provide a freely available, portable source-code library to encapsulate gridded bathymetric surfaces with associated uncertainty values. The data file format is called a Bathymetric Attributed Grid (BAG). The BAG is developed and maintained by the ONS Working Group (ONSWG), and the source code is available via the ONS website
Center for Coastal and Ocean Mapping
Journal or Conference Title
International Hydrographic Review
6, no. 2 (New Series)
Lemmers, Amsterdam, The Netherlands
International Hydrographic Organization
Calder, Brian R.; Byrne, Shannon; Lamey, Bill; Brennan, Rick T.; Case, James D.; Fabre, David; Gallagher, Barry; Ladner, R Wade; Moggert, Friedhelm; and Paton, Mark, "The Open Navigation Surface Project" (2005). International Hydrographic Review. 1011.