After finishing her Cambridge studies, she worked for a brief time at a company in
Lewisham that made instruments for telegraphy, electricity and engineering. She was then appointed to the new William Froude Laboratory, known as the National Experiment Tank, at the
National Physical Laboratory (NPL) by its supervisor, George S. Baker. There she began to work on the design of
seaplane hulls and floats. Her collaboration with Baker led to several papers co-authored by her with him and others and published between 1916 and 1923, on topics including the experimental testing of model seaplane floats and of full size machines, the latter in collaboration with
RAF personnel. Keary was the first woman to co-author (with Baker) a paper read to the
Institution of Naval Architects in 1918, entitled ‘The effect of the longitudinal motion of a ship on its statical transverse stability’. This groundbreaking work has apparently been cited as late as 1988. She was also the sole author of papers given on topics such as flying boats and rudder force. Although some reports state that she left the NPL in 1929 just before her marriage the following year, in the 1930s she jointly authored papers on subjects such as barges, the effect of immersion on propellers and steering ships, given to the RINA, the North East Coast Institution of Engineers and Ship Builders, and the Institution of Marine Engineers. == Recognition ==