Source: National Bureau of Economic Research  

Release: NBER Macrohistory Database  

Units:  Thousands of Gross Tons, Not Seasonally Adjusted

Frequency:  Quarterly, End of Quarter

Series Is Presented Here As 2 Variables: (1) Original Data, 1910-14; (2) Original Data,1918-39. Earlier Segments Are Comparable In Coverage To Later Segments; The Hiatus Is Due To The First World War. Content: Only Merchant Vessels Of 100 Tons Gross And Over. Data For End Of Quarter. No Seasonality Found For 1918-22 And 1931-39. Second Quarter Data For 1913 Does Not Include Tonnage Of Four Vessels Under Construction In Seattle, Washington. Computed Annual Values Are Means Of Quarterly Data. 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 q02098a appears on the NBER website in Chapter 2 at http://www.nber.org/databases/macrohistory/contents/chapter02.html.

NBER Indicator: q02098a