by the Pioneer Iron Works, Manila, who had not been paid for such work. The appeal was denied. Official Numbers and Code Letters Official Numbers were a forerunner to IMO Numbers. Empire Byng, Peter Dal II and Benwyvis had the United Kingdom Official Number 1695921. Empire Byng used the Code Letters GFNY. References External links Photo of Empire Byng 1944 ships Ships built on the River Clyde Empire ships Ministry of War Transport ships Steamships of the United Kingdom Merchant ships of the United Kingdom Steamships of Panama Merchant ships of Panama Steamships of the Philippines Merchant ships of the Philippines Maritime incidents in 1970 Dalhousie Steam and Motor Ship Company