The whale sighting efficiency of the crews aboard the research vessels Kaiyomaru and Umitakamaru was recorded on the Antarctic ocean from 1980 to 1981.
The input data capacity of latitude and longitude values are limited only to degrees. The exact values are as follows: Min. Latitude: 67deg. 35min. S Max. Latitude: 8deg. 22min. S Min. Longitude: 26deg. 42min. E Max. Longitude: 164deg. 45min. E