The BRDM-1 (Boyevaya Razvedyvatelnaya Dozornaya Mashina) was an amphibious armored scout car used by Russia and the former Soviet Union. It was originally known simply as BRDM but when BRDM-2 entered production and service with Soviet Army in 1962, it received designation BRDM-1. The BRDM (also known as the BTR-40P) first appeared in 1957, and was in production until 1966. Total production was around 10,000 vehicles and is was established in several countries, one of it - Vietnam.