In this issue, we look at some of the challenges involved in working beneath the waves. BMT is helping to ensure that unmanned underwater vehicles reach their potential in a safe and environmentally responsible manner. The ¡VAMOS! consortium is developing underwater mining equipment that could help secure up to €100 billion of unexploited European mineral resources. The Norwegian Geotechnical Institute is developing foundation technology originally used in the offshore oil and gas sector for use by the renewables industry. Dealing with offshore structures responsibly at the end of their operational life is vital and BMT Cordah is involved in ensuring that decommissioning can take place in a safe and environmentally responsible fashion. Developing people is as important as developing technology and BMT Defence Services is proactively training the next generation of submarine engineers.