First Minister Carwyn Jones and Welsh Secretary David Jones will make a joint visit this morning to Royal Navy warship HMS Dragon, which is at Britannia Quay in Cardiff for five days.
The 152m ship will be receive the Freedom of the City on Sunday.
It's open to the public on Saturday - and our reporter James Crichton-Smith is on board now:
The First Minister Carwyn Jones and Welsh Secretary David Jones visited HMS Dragon today. The warship is in Cardiff until Sunday.
Our presenter writes about the 'mystery and majesty' of Royal Navy destroyer HMS Dragon, open to the public in Cardiff this weekend.