DeepSea Technologies has secured fresh funding from new and existing investors to expand in Asia and develop more maritime technologies.

The Signal Group and Nabtesco Technology Ventures have joined ETF Partners in providing €5m ($5.93m) to the Greek tech venture, the companies said on Thursday.

“Having the support and conviction of key industry partners who will support us in realising our mission of making shipping sustainable is extremely motivating for the whole team,” DeepSea co-founder and chief executive Roberto Coustas said.