evidence: The Tanzanian ferry MV Songea was built in 1988.[39] Her operator was the Tanzania Railway Corporation Marine Division until 1997, when it became the Marine Services Company Limited.[40] Songea plies weekly between Liuli and Nkhata Bay via Itungi and Mbamba Bay.[39] The worst Lake disaster was the sinking of the MV Vipya in 1946, which resulted in 145 deaths. [41]