Amorim do Valle (ex-UK River (MCM))

The Amorim do Valle (H35) is a hydrographic survey vessel currently operated by the Brazilian Navy. Originally built as the River-class minesweeper HMS Humber for the British Royal Navy, the vessel was acquired by Brazil and converted for research and navigational aid duties. It is equipped to perform hydrographic surveying, cartography, and beacon maintenance along the Brazilian coast.

Designed and built by Richards Shipbuilders in the United Kingdom, the vessel entered service with the Royal Navy in 1985 as HMS Humber. After a decade of service as a minesweeper, it was decommissioned and sold to the Brazilian Navy in 1995 alongside two sister ships. Following its transfer, the ship underwent conversion to a hydrographic vessel and was commissioned as the Amorim do Valle. It remains active in the Brazilian Navy, supporting maritime safety and scientific research missions.