1896 - left the firm of Edward Withy & Co., shipbuilders, of Hartlepool, to become a ship surveyor for Lloyd's Register of Shipping. 1906 - patented what became widely acclaimed as the ‘Isherwood system’ of construction which involved longitudinal framing. 1907 - left Lloyd's. 1908 - the first ship constructed along the lines of the Isherwood system was the Paul Paix. 1921 - was created a baronet in recognition of his contributions to the progress of naval architecture and his work for the government during the First World War. 1933 - introduced a new design of hull form, namely, the ‘arcform’.