Florence Mary James

http://en.wikipedia.org/wiki/HMS_Himalaya_(1854) was a troop ship (briefly SS Himalaya before being purchased by RN)

Index of Marines births has two entries for James (female) born at sea - both unnamed.

National Archives should have ships logs

Name: JAMES, Florence M
Registration District: Romford
County: Essex
Year of Registration: 1919
Quarter of Registration: Jan-Feb-Mar
Age at death: 77
Volume No: 4A
Page No: 631