Hydrodynamic Velocity Performance of Turbine-Type and Thruster-Type Conduction-Mode MHD Drives under Electrical Voltage Variation in Seawater

Background: Indonesia's maritime transportation sector is heavily dependent on fossil fuels, driving interest in clean propulsion alternatives. The magnetohydrodynamic (MHD) drive, which generates thrust via Lorentz force acting on conductive seawater (F = BIL), offers a propeller-free, low-noise option. However, comparative performance data for turbine-type versus thruster-type conduction configurations remain limited. Objective: To quantify the effect of electrical voltage variation (3–15 V) o