The Duke of York has officially opened the United Kingdom Naval Support Facility in Bahrain.
It's the first overseas Royal Navy establishment in almost half a century.
The Ministry of Defence says the facility is intended to increase the capabilities that already exist in Bahrain, but it will also allow the UK to provide better support for its vessels, including the new aircraft carriers, HMS Queen Elizabeth and HMS Prince of Wales.
Prince Andrew told Forces News he's particularly impressed by the long-term planning that has gone into the facility.
"This is one of the most advanced naval facilities that we have."
The complex is not a naval base as such as there are no dry docks. It is intended purely for support - that is, accommodation and administration, workshops and warehouses.
Gavin Williamson Defence Secretary said:
"Our Armed Forces are the face of Global Britain and our presence in Bahrain will play a vital role in keeping Britain safe as well as underpinning security in the Gulf.
"Britain is a major player on the world stage and this new Naval Support Facility will help us tackle the growing threats to our nation wherever they are across the globe and protecting our way of life."
The UK Naval Support Facility in Bahrain has accommodation for up to 500 personnel, along with two gyms, a cinema room and games rooms. It will also house the BFBS Middle East radio station.
Commodore Steve Dainton, United Kingdom Maritime Component Commander says it will help to strengthen Britain's military ties in the region.
"It will be hub of naval operations across the Indian Ocean, the Gulf, the Red Sea and potentially further afield"