The program used to retrieve sea surface wind speed from the S1 HH-polarized data is written in MATLAB. The main program is entitled "retrieval_ssws_using_BPNN.m", which calls a function to read the KML file included in the S1 product. The function is entitled "read_sentinel_kml.m" The parameters (weights and biases) of the trained BP neural network are stored in the MATLAB data file, named "Ws_net.m". Details of the development of the neural network method is described in the manuscript: "Retrieval of sea surface wind speed from spaceborne SAR over the Arctic marginal ice zone with a neural network" by X.-M, Li, T. Qin and K. Wu. The manuscript was submitted to IEEE TGRS and is being reviewed. Please cite the paper when it is applicable.