Difficult conditions are hampering search efforts . She was abandoned upon arrival in Korea in February last year . Rescue workers have been attempting to pump water into the vessel . Three giant ` ` ' cranes '' dispatched to the scene .
Difficult conditions are hampering search efforts . Vessel was refitted upon arrival in Korea in February last year . Rescue workers have been attempting to pump air into the ship . Three giant `` sea cranes '' dispatched to the site .