Brazil's container shipping sector is undergoing another scene change as players in the sector again change partners. Carriers Transroll Navegacao and Alianca Transportes Maritimos SA are to launch a Brazilian coastal service following the collapse of an agreement between Transroll and bulk shipping group Docefrota, according to sources at the companies. The news follows weeks of speculation about talks between the two Rio de Janeiro based companies and various other Brazilian shipping lines. Rival carriers Docenave, Global Transporte Oceanico, Frota Oceanica y Amazonica, Neptunia Companhia de Navegacao have all been involved in talks regarding coastal services, known as cabotage, shipping sources say.