The galleon San Diego was built as the trading ship San Antonio before hastily being converted into a warship of the Spanish Navy. On December 14, 1600, the fully laden San Diego was engaged by the Dutch warship Mauritius under the command of Admiral Olivier van Noort a short distance away from Fortune Island, Nasugbu, Philippines. Since San Diego couldn't handle the extra weight of her cannons, which led to a permanent list and put the cannon portholes below sea level, she was sunk without firing a single shot in response. The Dutch were later reported firing upon and hurling lances at the survivors attempting to climb aboard the Mauritius.