China Defense Blog is reporting China’s Maritime Safety Administration (MSA) is sending one of its largest cutters, the MSA21, to join search and rescue efforts in Japan, and that this will be their first mission outside China.
Good to see this gesture. Pictures of the cutter make it appear approx 270 size.
Chuck Hill's CG Blog 
A bit more info here: http://newpacificinstitute.org/jsw/?p=5394