# Online Oceans funding rounds and investors

As of 31 Oct 2026, Online Oceans has raised $5.4M across 1 verified round on record; latest: $5.4 million (£4 million) funding round led by Florian Seibel, Frank Thieser and 2 others, announced 30 Apr 2026.

A UK company building autonomous surface vessels and fleet software for defense and maritime security

Website: https://onlineoceans.com  
Headquarters: UK  
Page: https://fireround.dev/companies/online-oceans

## Verified rounds

| Announced | Round | Amount | Lead investors | Other investors | Sources |
| --- | --- | --- | --- | --- | --- |
| 2026-04-30 | Funding round | $5.4 million (£4 million) | Florian Seibel, Frank Thieser, Peter Rive, Seraphim Space | Koro Capital | [seraphim.vc](https://seraphim.vc/news/online-oceans-raises-4m-maritime-autonomy-seraphim-led), [google.com](https://www.google.com/goto?url=CAESxwEB6zswFbzJKglYX3lQ4FfAKx_nqsFMClUJAdVSfZlY92OEqKbOmhEH2zuYEX4097M8fSJsQSROqW_WvA_Q5l5cqeP6ECMP_6CfoP3mES1Y7tWPzGHXfqR12wNRyttuZ7fwlG_JU87-GvSTp36TaDo9SIQYdiKC3cYax-mqhoUIXOQ7Z8eeUToMy7iINaDtKuZQj1YAneY9veVMQwGx2mRcKMlTzhqKKKrjKkdJzONYENJZcHpZgc79wG6hojmOnQOFGMLqf3a7), [google.com](https://www.google.com/url?opi=89978449&q=CAESlAEB6zswFeYosDsRzSTSayeNIrXs3A8iWy2pMgENdyvspRE7k0nRqcRNAAS4RRsSXGi6SUQEZ9yhkqmTetqrq6GoNKtJWaPwc82Nc4IHV8Se4ZqWZtx4KttlMloZYCXRNAx8bOO4r9rr3zZ7uf9MqtgHsAlFXYKRmN7LOpzSb2fRi7reZaHSiBXY_n8to4Udyyz19PiA&sa=U&uoh=3&ved=2ahUKEwiD8P_S-uOXAxXczjgGHbAdBn0QxfQBegQIAxAC&usg=AOvVaw00q4AwIPZu_zvjVoc2HEZW) |

Source: Fireround (https://fireround.dev), an open-source funding feed. Each round is checked against the pages listed with it.