This manuscript presents the investigations on three different types of low voltage AC (LVAC) power distribution architectures of diesel-electric propulsion system for diving support vessel (DSV). It focuses on the qualitative analysis of three LVAC power distribution architectures employing: (1) the conventional 12-pulse converter and (2) active front end (AFE) converter and (3) the proposed 6-pulse converter with shunt active filter (SAF). The reliability evaluation of all the three power architectures has been performed to confirm the viability of the proposed architecture. Further a qualitative analysis of all the three different power architectures has also been furnished.