Pravda Russia:

Another vessel with people on board disappeared in Lake Baikal. Now a search and rescue team is looking for a pleasure boat “Yamaha” that went into the lake with four men on board on 16 June and still has not returned. Everyone says that the men were experienced sailors. However, some do not believe that the crew will return as it disappeared in the most mysterious area of ​​Lake Baikal.

More:  http://english.pravda.ru/society/anomal/23-06-2011/118289-lake_baikal-0/