For the Cutty Sark to put to sea these days, she would have to have an engine fitted, modern lifeboats, electric pumps, GPS, radar, wireless, etc etc, all sorts of things which would detract from her as a historic vessel - otherwise no insurance company would touch her - she wouldn't be allowed to manouvere in harbour without an engine - and no risk assessor would be able to let it happen.

She would be subject to all the modern Board of Trade restrictions.

It would be a nice thing to see but there's only the one of her - and we wouldn't want to see her smashed up on rocks with loss of life, now, would we.