At high water in the afternoon of Sunday 3 June 2012, up to a thousand boats muster on the River Thames in preparation for Her Majesty The Queen to lead the Thames Diamond Jubilee Pageant. It will be one of the largest flotillas ever assembled on the river. Rowed boats and working boats and pleasure vessels of all shapes and sizes will be beautifully dressed with streamers and Union Jacks, their crews and passengers turned out in their finest rigs. The armed forces, fire, police, rescue and other services are all afloat and there are an exuberance of historic boats, wooden launches, steam vessels and other boats of note.