Only Merchant Vessels Of 100 Tons Gross And Over Are Included. Data Shown Are For End Of Quarter, And Annual Figures Are Means Of Quarterly Values. Seasonally Adjusted Data For 1882-86 Is Shown Here, Although The NBER Did Not Use It In Analysis. No Seasonally Adjusted Data Is Given For 1916-39, Because No Consistent Seasonality Was Noted. It Is Possible That Large Cyclical Movements Obscured The Seasonal During This Period. Gross Tonnage Represents, In Units Of 100 Cubic Feet, The Entire Capacity Of The Vessel, Including Crew And Engine Space. Source: Lloyd'S Register Shipbuilding Returns And Letter From London Office Of Lloyd'S Register Of Shipping
This NBER data series q02099 appears on the NBER website in Chapter 2 at http://www.nber.org/databases/macrohistory/contents/chapter02.html.
NBER Indicator: q02099
Release: NBER Macrohistory Database
National Bureau of Economic Research, Tonnage of Vessels Under Construction for Great Britain and Ireland [Q02099GBQ561NNBR], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/Q02099GBQ561NNBR, February 10, 2016.