Captain Arturo Prat Base, Chilean research station on Greenwich Island, South Shetland Islands, Antarctica.

Captain Arturo Prat Base is a Chilean research station located at Iquique Cove on Greenwich Island in the Antarctic region. The facility contains multiple buildings designed to support scientists conducting ionospheric and meteorological research throughout the year.

The base was founded in 1947 as part of Chile's first Antarctic expedition and began under military command. Management shifted to regional civilian authorities in 2006, changing how the facility operated.

The station is named after a Chilean naval officer and maintains four memorial sites on its grounds that reflect the blend of military heritage and scientific mission. These markers show how the facility connects Chilean identity to polar research.

Access is by sea or air from Punta Arenas, the usual gateway for Chilean Antarctic operations; the cove at Iquique Cove shelters vessels. The station runs year-round with nine Navy personnel plus INACH researchers, so visits depend on prior coordination and transport space. Weather is maritime polar: July lows near −29 °C, and rain falls even in the driest months.

Four Antarctic Treaty Historic Sites and Monuments stand around the station, all proposed by Chile and designated in 1972: a 1947 concrete monolith for hydrographic surveys, a bust of Arturo Prat from the same year, a wooden cross with a statue of the Virgin of Carmel, and the González Pacheco shelter and cross. Base personnel maintain them.