We applied the algorithms to cruise data measured with a dual-wavelength polarization lidar of NIES (National Institute for Environmental Studies) installed on the research vessel MIRAI of JAMSTEC (the Japanese Maritime Science and Technology Center). The cruise was performed on the coast of Indonesia and Philippine islands from September 21 to December 17, 2001. We first removed the data contaminated by clouds using the lidar and also cloud radar data. In the cruise, 95GHz cloud profiling radar of NICT (National Institute of Information and Communications Technology) was also installed. Next, we applied the backward-type algorithm to the data measured under clear-sky condition, and then calibrated the lidar data using the aerosol optical properties retrieved. Finally, the forward-type algorithm was applied to the calibrated lidar-data, which were measured under cloud bottom layers. The result shows that few dust aerosols were found in all the observation period. Most of water-soluble and sea-salt aerosols existed in the lower layers below 1 km. The aerosol optical thickness at a wavelength of 532 nm averaged in all the observation period was 0.14. The value of 0.14 is relatively larger than that reported from sunphotometry measurements over the open sea in the Pacific region. This might imply advection of aerosols originated from the Indonesia and Philippine islands.