From A Wiki of Ice and Fire
Windproud was a two-masted galley belonging to House Baratheon. It had a hundred oarsmen and sailors.
Lord Steffon Baratheon and his wife, Lady Cassana Estermont, took Windproud to the Free Cities to search for a wife for Prince Rhaegar Targaryen, the son of King Aerys II Targaryen. On their return trip, however, the ship broke up during a storm in Shipbreaker Bay. Robert and Stannis Baratheon watched the destruction of their parents' ship from Storm's End. All lives were lost with the exception of Patchface, who washed up on shore, half-mad.
I stopped believing in gods the day I saw the Windproud break up across the bay. Any gods so monstrous as to drown my mother and father would never have my worship, I vowed.