Kairei gridded a survey area about 130 km N-S by 110 km E-W. - search parameters: "Kairei", "KR98-05" Kaikō'' made six dives (#71 - #75) all to the same location, (11°20.8' N, 142°12.35' E), near the 10900 meters bottom contour line in the western basin.