About UDT

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Reunite in Rotterdam

The global event for undersea defence and security

According to Shephard's Naval Vessels Market Report, the global market for conventional submarines alone is expected to increase to US$8.0 billion by 2029. Cumulatively, the market is expected to have a value of US$90.3 billion over the next decade.

Undersea Defence Technology (UDT), as the largest global event dedicated to the undersea defence industry, is a multi-faceted exhibition and conference reflecting the community’s desire for continuous learning and development.

Designed to equip nations to deal with an increasing diversity of threats and challenges, UDT brings together researchers, military end-users and professionals spanning the entire supply chain to evaluate developing solutions in one of the harshest environments known to man.


WATCH: Highlights from the last edition of UDT, held in Stockholm in May 2019.

UDT 2023 will provide an invaluable platform for all stakeholders in the undersea defence community to come together, learn, expand networks and explore business opportunities in Rostock, Germany.

Who attends UDT?

Who attends UDT?

Conference Overview

Conference Overview

Book a Stand

Book a Stand

33 years and counting

The 34th edition will be held from 9 to 11 May 2023 in Rostock, Germany.


Each year, the event rotates around venues in Western Europe. Recent locations include:

Next stop Rostock, Germany! 2015: 3-5 June, Rotterdam, Netherlands
2022: 7-9 May, Rotterdam, The Netherlands 2014: 10-12 June, Liverpool, UK
2019: 13-15 May, Stockholm, Sweden 2013: 18-20 June, Hamburg, Germany
2018: 26-28 June, Glasgow, Scotland 2012: 29-31 May, Alicante, Spain
2017: 30 May - 1 June, Bremen, Germany 2011: 7-9 June, London, UK
2016: 1-3 June, Oslo, Norway 2010: 8-10 June, Hamburg, Germany

Attendee Feedback

  • “UDT once again proved its worth. It is a great combination of scientific papers, good quality presenters and new information. I was impressed by the volume of novel ideas."
    Captain Herman De Groot
    CO Submarine Service, Royal Netherlands Navy
  • "One of the best organized shows for underwater business. If you are in underwater business and not at this show, you are missing out for sure."
    Raffi Sahul
    Director of Business Development, Amphenol
  • “UDT is a good, well-attended show with quality leads”
    Michelle Wilson
    Marketing Manager, Analox Military Systems
  • “UDT is always a great opportunity to meet potential new clients, catch up with existing customers and socialise with competitors and colleagues.”
    Andy Buxcey
    Technical Account Manager, TP Group
  • “UDT was a great show for us - presenting a paper and having a stand meant not only was our footfall greater, but our visitors were more specific to our product category. In the lead up to the event, the EZONE was easy to navigate and communication with the organisation team was straightforward and prompt. We have booked a bigger space for 2020!”
    Alice Moore
    Marketing Coordinator, SEA Group
  • “A fantastic event. UDT provides the opportunity to learn from a huge breadth of experience across a number of key topics.”
    Lieutenant Anthony Gilroy
    Royal Navy, UK
  • "UDT is important to review new technology, new equipment and new systems. It allows clients to see what the industry is doing, and for the industry to see what the clients need in the future"
    Giovanni Corbetta
    Managing Director, JFD
  • "UDT is the only exhibition and conference in the calendar which brings together the underwater technology community. Customers are here, and that's important to us."
    Josh Goodwin
    Business Development Manager, BAE Systems


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