International Journal of Marine Engineering Innovation and Research, Vol. 4(1), Jun. 2019. 1-10 (pISSN: 2541-5972, eISSN: 2548-1479) 1 Performance Analysis of Submerged Vehicle Electric Propulsion with DC Motor 2x1850 kW 380 Volt which Supplied Power 10260 AH on 190 VDC in Series and Parallel Circuits Indra Ranu Kusuma 1 , Sardono Sarwito 2 , Annisa Maya Shabrina 3 (Received: 23 January 2017 / Revised: 24 June 2019 / Accepted: 02 July 2019) Abstract⎯an electric DC motor that is used as a main propulsion, typically used on ships with high maneuverability, special ships, ships wtih great cargo load, and the ships that use prime movers non-reversible (generally using a gas turbine, steam turbine and high-speed diesel in its use is unlikely to reverse its rotation quickly). As for the expected results we will obtain the characteristics (such as torque and rotation) on a series DC motor series and in parallel on the propulsion system, determines where an efficient circuit for the propulsion system, getting long use of batteries used for such needs. In this research will be assessed numerically by simulation using MATLAB-Simulink the drive system by using a DC motor in a vehicle submerged was carried out together series and parallel. The result obtained is the same input voltage of 190 Volt same torque value of 140 Nm is generated at the motor circuit series and parallel. So that a series circuit, generating a service speed of 12 knots and 21.5 knots using a converter, and usually when submerged condition in the sea. For parallel circuit produces speed of 14 knots and 11 knots using a converter. Keywords⎯ DC motor, matlab-simulink, propulsion system, torque I. INTRODUCTION 1 The electrical propulsion system is systems on ships using electrical machines AC or DC the performance of the main engine, which in this case the generator is connected to a switchboard, and further energy or electric current is passed to the transformer, then converted using konventer to electric motors which drive the ship's propeller. In general, the ship that has special utility that uses a DC motor and for profit-oriented commercial ships generally use AC motors. DC electric motor that is used as a main propulsion, typically used on ships with high maneuverability, special ships, ships with great cargo load, and the ships that use prime movers non-reversible (generally using a gas turbine, steam turbine and high-speed diesel in its use is unlikely to reverse its rotation quickly). The development of a prime mover for main propulsion on board experienced rapid growth since the invention of the steam by J. Watt, by Rudolf Diesel diesel engines and gas turbines by Brayton. Things that need to be considered in the use of a DC motor as the actuator is Indra Ranu Kusuma, Department of Marine Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia, Email : Irkusuma93@gmail.com Sardono Sarwito, Department of Marine Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia, Email : sarsar@its.ac.id Annisa Maya Shabrina, Department of Marine Engineering, Institut Teknologi Sepuluh Nopember, Surabaya 60111, Indonesia, Email : annisamayas.ams@gmail.com matters related to electric motors, among others, the initial flow, the speed setting method, the method of reversal rotation, braking and others. In the early years of the discoveries about the three prime movers only revolve around the improvement of the working system. For example, icebreaker (ice breaker) uses a DC motor in this case due to the required torque very large propeller. There are three ways to regulate rotation in a DC motor including a magnetic flux arrangements, armature resistance arrangement , as well as the terminal voltage regulation [1]. As for the expected results we will getting characteristics (such as torque and rotation) on a DC series motor and in parallel on the propulsion system, determines where an efficient circuit for the propulsion system, the long usage of batteries used for such needs. Things that need to be considered in the use of DC motor as the actuator is matters related to electric motors, among others, the starting current, the speed setting method, reversal method rounds, etc. There are three kinds of methods to regulate the rotation of the DC motor, one of which is to control the terminal voltage. In the electric propulsion system, it takes some variation of the circuit to match needs with rotation speed generated by DC motor [1]. The most advanced vehicles submerged make their own fresh water from sea water. There is also a reserve of air to the process of liberating oxygen from freshwater. Although the vehicle submerged float with ease, the ship was able to dive to the ocean floor and remained there until months long. The secret lies in the double wall construction typical of the ship. Special spaces watertight (or ballast tank) between the outer wall and inner wall can be filled with sea water thereby increasing the overall weight and reduced buoyancy.