Chinese Antarctic exploration team members aboard Chinese icebreaker Xuelong (Snow Dragon), search for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

A Chinese Antarctic exploration team member aboard Chinese icebreaker Xuelong (Snow Dragon), searches for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

Chinese Antarctic exploration team members aboard Chinese icebreaker Xuelong (Snow Dragon), searche for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

A Chinese Antarctic exploration team member aboard Chinese icebreaker Xuelong (Snow Dragon), searches for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

A Chinese Antarctic exploration team member aboard Chinese icebreaker Xuelong (Snow Dragon), searches for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

A Chinese Antarctic exploration team member aboard Chinese icebreaker Xuelong (Snow Dragon), searches for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

Chinese Antarctic exploration team members aboard Chinese icebreaker Xuelong (Snow Dragon), deploy the searching for missing Malaysian Airlines flight MH370, March 23, 2014. The icebreaker, travelling at full speed on the south Indian Ocean, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

A Chinese Antarctic exploration team member aboard Chinese icebreaker Xuelong (Snow Dragon), searches for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

A Chinese Antarctic exploration team member aboard Chinese icebreaker Xuelong (Snow Dragon), searches for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

Chinese Antarctic exploration team members aboard Chinese icebreaker Xuelong (Snow Dragon), search for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

A Chinese Antarctic exploration team member aboard Chinese icebreaker Xuelong (Snow Dragon), searches for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

Chinese Antarctic exploration team members aboard Chinese icebreaker Xuelong (Snow Dragon), search for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

A Chinese Antarctic exploration team member aboard Chinese icebreaker Xuelong (Snow Dragon), searches for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

Zhu Li, first mate of Chinese icebreaker Xuelong (Snow Dragon), shows the search and rescue radar on the vessel, March 23, 2014. The icebreaker, travelling at full speed on the south Indian Ocean, was about 770 sea mile from the search area of missing Malaysian Airlines flight MH370 up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

A Chinese Antarctic exploration team member aboard Chinese icebreaker Xuelong (Snow Dragon), searches for missing Malaysian Airlines flight MH370 over the southern Indian Ocean, March 23, 2014. The icebreaker, travelling at full speed, was about 770 sea mile from the search area of the missing jet up to 10:00 Sunday. (Xinhua/Zhang Jiansong)

 

A crew member of Chinese icebreaker Xuelong searches for the missing Malaysia Airlines Flight MH370 on the south Indian Ocean on March 23, 2014. The icebreaker is expected to reach the search area of the missing Malaysia Airlines MH370 in 70 hours up to 18:30 on Saturday. (Xinhua/Zhang Jiansong)

 

A crew member of Chinese icebreaker Xuelong searches for the missing Malaysia Airlines Flight MH370 on the south Indian Ocean on March 23, 2014. The icebreaker is expected to reach the search area of the missing Malaysia Airlines MH370 in 70 hours up to 18:30 on Saturday. (Xinhua/Zhang Jiansong)

 

Crew members of Chinese icebreaker Xuelong search for the missing Malaysia Airlines Flight MH370 on the south Indian Ocean on March 23, 2014. The icebreaker is expected to reach the search area of the missing Malaysia Airlines MH370 in 70 hours up to 18:30 on Saturday. (Xinhua/Zhang Jiansong)

 

Crew members of Chinese icebreaker Xuelong search for the missing Malaysia Airlines Flight MH370 on the south Indian Ocean on March 23, 2014. The icebreaker is expected to reach the search area of the missing Malaysia Airlines MH370 in 70 hours up to 18:30 on Saturday. (Xinhua/Zhang Jiansong)

 

Crew members of Chinese icebreaker Xuelong search for the missing Malaysia Airlines Flight MH370 on the south Indian Ocean on March 23, 2014. The icebreaker is expected to reach the search area of the missing Malaysia Airlines MH370 in 70 hours up to 18:30 on Saturday. (Xinhua/Zhang Jiansong)