Once again Charles Prince of Wales family pleasure yacht has become stranded in Hyde Park's Serpentine Pond.
The Prince was out with a party of friends Thursday when the ship went aground near the North walking path.
Onlookers rushed to the scene and helped several of the somewhat tipsy partygoers to shore and safety as a Royal Marines Sea Gypsy rescue helicopter hovered in from Portsmouth.
The Prince himself was unharmed but was befuddled at how a simple outing at Tyneholme-on-the-Tyne near Devon could turn into such a fiasco.
Evidently the person (or persons) at the wheel took a wrong turn into a barge canal just at Whippingsly Dock and didn't realize they had crossed through Lancaster Gate in London until it was far too late.
Cost to remove the craft and its attendant oil slick is estimated at between one and eight million pounds sterling. (The valuable old-fashioned kind.)