Geoacoustic inversion is an effective way to infer several parameters at a time, but the complexity of inversion increases with the number of parameters. After fitting basic seabed parameters, the bottom loss gradient was proposed for single parameter inversion. By rejecting multi-parameter inversion in favor of reducing the number of inversion parameters to one, a new rapid geoacoustic inversion technique has been developed, using a single-hydrophone without complex measurements and optimization algorithms. Seabed geoacoustic parameters that were obtained using a single parameter model were inverted from the transmission loss. The product inverted by the technique was used to predict propagation loss. The results were similar to the data obtained from cores and from the matched field inversion carried out in the same experiment.