Charles and Mary Ross also built ships for the Hudson Bay Company if I remember correctly, as well as vessels for the general merchant trade. When Charles Ross died, he not only left his widow a full order book (including vessels for the Royal Navy) but once those orders were complete, Mrs Ross went on to win more orders. The Navy Board could be notoriously capricious with orders, and frequently asked for ships to be left incomplete or sat on a slipway. Mrs Ross wasn't afraid to take them on when they asked her to leave HMS Vigo complete on her slipway for the time being. HMS Vigo was a Third Rate ship of the line of 74 guns and so was a big ship, much larger than those normally built in her shipyard. Mrs Ross couldn't afford to have a vessel of that size sat on her slipway preventing her from fulfilling other orders, so she took them on and pursuaded them to approve the launch.