title: Borda Rock
text: # Borda Rock
  
  Borda Rock (Bulgarian: скала Борда, romanized: skala Borda, IPA:) is the rock off the NW coast of Smith Island in the South Shetland Islands, Antarctica 270 m long in southwest-northeast direction and 90 m wide (extending 543 by 175 m together with the adjacent minor rocks). Its surface area is 1.46 ha. The vicinity was visited by early 19th century sealers.
  
  The feature is named after Jean-Charles de Borda (1733-1799), a French mathematician, physicist and Navy officer who refined the reflecting circle; in association with other names in the area deriving from the early development or use of geodetic instruments and methods.
  
  ## Location
  
  Borda Rock is located at 62°55′01.6″S 62°32′15″W﻿ / ﻿62.917111°S 62.53750°W﻿ / -62.917111; -62.53750, which is 240 m northwest of Gregory Point. Bulgarian mapping in 2009 and 2017.
  
  