Held as a live event in Monaco

Convened by Map the Gaps, held virtually from Nairobi, Kenya

Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany

Lamont-Doherty Earth Observatory, Columbia University, Palisades, New York, USA

Hydrographic and Oceanographic Department, Japan Coast Guard, Tokyo, Japan

Held at Oceanopolis, Brest, France

Hosted by the Peruvian Directorate of Hydrography, Callao, Peru

Scripps Institution of Oceanography, La Jolla, California, USA

Hosted by the Directing Committee of the International Hydrographic Bureau at the Salle du Ponant, Monaco

Hosted at the Istituto di Scienze Marine in Venice, Italy