In the UK, a unrestricted master's certificate is colloquially called a "master's ticket" or a "master's." It is sometimes still referred to as a “Class 1” or “Master Foreign-Going” as it was named during the latter part of the 20th century. The conventions or acts governing the certificate have evolved alongside the shipping industry and the official name of a master mariner’s qualification has varied over the years. The UK Maritime & Coastguard Agency, in line with the amended STCW convention,[1] currently[when?] title the certificate Master Unlimited.[2]