Question: Which ministry is in charge of the service that owns the oceanographic research vessel "Dr. Bernardo A. Houssay"?
Related documents: [0]  [DOC] The Argentine Naval Prefecture (Spanish: Prefectura Naval Argentina or PNA) is a service of the Argentine Security Ministry charged with protecting the country's rivers and maritime territory. It therefore fulfills the functions of other countries' coast guards, and furthermore acts as a gendarmerie force policing navigable rivers. [END] 
[1]  [DOC] RV "Atlantis" is a sailboat that served as the first and also the main research vessel for the Woods Hole Oceanographic Institution from 1931 to 1964. Several ships, including RV "Atlantis" (AGOR-25) and the "Atlantis" (OV-104) were named after "Atlantis". The former "Atlantis" is now commissioned as an oceanographic research vessel in the Argentine Naval Prefecture as the "Dr. Bernardo A. Houssay". Having sailed over 1,300,000 miles to date, she is the oldest serving oceanographic research vessel in the world. [END] 
Answer: 
the Argentine Security Ministry
the Argentine Security Ministry