The Bramblemet Support Group (BSG) comprises the original Chimet Support Group (CSG) - volunteers who are all retired professionals and freelance consultants, as well as the Port Hydrographer at ABP Southampton, and a representative of SCRA

The purpose of the CSG is the establishment and support of weather-reporting websites, with free-to-the-public access.

The first Chimet website was designed and built in December 2000, by Timothy Yau-Kwan Chan, as part of an MSc in Computing and Information Systems at Greenwich University. Chimet was followed by another site, Cambermet, in June 2003.

In June 2004, two more sites, Bramblemet and Sotonmet, were added to the network. Bramblemet is jointly funded by the RNLI, ABP and SCRA, while Sotonmet is supported by data from an existing port weather station funded entirely by ABP.

Chimet Support Group remain responsible for handling the data from all of the stations in the network, and making it available on the web.