The Submarine Medical Insignia is a badge of the United States Navy which is presented to medical officers of the Navy Medical Corps who have received training and qualification in submarine warfare and medical expertise. First awarded in 1943, the Submarine Medical Insignia is awarded to Navy Doctors who have completed at least 30 days of underway time on submarines. The Personal Qualification Standard (PQS), for the Submarine Medical Insignia, also contain medical specific knowledge applicable to the close quarters and unique environment of practicing medicine on a submarine.