Data Are For The Net Tonnage Of Vessels Entered, Exclusive Of Cargo. Data For 1846-August 1937 Cover The Volume Of Two Years Past Data; Data For September 1937-August 1938 Cover The Volume Of One Years Past Data; Data For September 1938-August 1939 Cover Current Volume. Data For April 1923-1939 Exclude The Irish Free State. Source: Board Of Trade, Statistical Office, "Accounts Relating To Trade And Navigation".
This NBER data series m03025 appears on the NBER website in Chapter 3 at http://www.nber.org/databases/macrohistory/contents/chapter03.html.
NBER Indicator: m03025
Release: NBER Macrohistory Database
National Bureau of Economic Research, Tonnage Entered, British and Foreign for Great Britain [M03025GBM583NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/M03025GBM583NNBR/, July 7, 2015.