The computer program described by Liu, Katsaros, and Businger (1979) for calculating the bulk-derived atmospheric fluxes, stability, and roughness is presented in both the FORTRAN and BASIC versions. The results of 12 test calculations are presented to ensure that the program has been properly encoded. The program requires seven input parameters: (1) Wind speed; (2) Air Temperature; (3) Specific humidity; (4) Water temperature at the surface; (5) Altitude of the wind-speed measurement; (6) Altitude of the air-temperature measurement; and (7) Altitude of the humidity measurement. Additional keywords: Air sea interaction.