Up to 30 people - mostly women - were feared drowned Monday after a heavily-laden boat capsized on Lake Victoria, leaving only six survivors, local media reports said. The vessel boat left Bumba landing site on the Buvuma islands archipelago roughly in the middle of Africa's largest fresh-water lake, the reports said. It sank just before Rwanika landing site in Mayuge district on the far eastern side of the Ugandan waters of the Victoria, a Kampala- based private radio station, KFM, reported. Another privately-owned radio station, Central Broadcasting Service (CBS), said the boat was carrying seven tons of fish and other cargo, and the victims were mostly women fish traders. Many lives are lost in marine accidents on Ugandan lakes every year, many blamed on overladen, speeding the boats which are sometimes in poor mechanical condition.