It might be called a Royal Yacht, what it really is, is an advert for UK PLC.
On top of that it will probably be built in Scotland, with probable caveats that an independent Scotland will lose the right to build it.
Don't forget the last Royal yacht was built at a cost of about £2.5million, yet deals and trade agreements worth over £3billion were signed on board over its lifetime.
Whilst there are some in the UK who do not like or see the need for a Royal Family, there are other wealthy nations who look upon the tradition and pageantry with jealousy, they are the ones the UK needs to target in a post Brexit world to strengthen our economy.
If the UK can generate 1200 times the cost of a new Royal Yacht in overseas sales and trade agreements then I am all for it.