On ships, both AC and DC power systems are typically employed. AC is used for high-power applications like propulsion and lighting, while DC is used for low-power applications like control systems and navigation equipment.

Diesel generators are the most common source of electrical power on ships. They are reliable, efficient, and can operate on various fuels.

The main switchboard is the central point of the ship's electrical system. It distributes power to various parts of the ship, protects circuits from overloads and faults, and regulates the voltage and frequency of the electrical supply.

Single-core, multi-core, and armored cables are all used for power distribution on ships, depending on the specific application and requirements.

Transformers are used in a ship's electrical system to increase or decrease the voltage of an electrical supply, allowing for efficient power distribution and utilization.

Circuit breakers are designed to protect electrical circuits from overloads and faults by automatically interrupting the flow of current when abnormal conditions occur.

A grounding system in a ship's electrical system serves multiple purposes, including providing a low-resistance path for fault currents, protecting personnel from electrical shocks, and ensuring the proper functioning of electrical equipment.

Incandescent, fluorescent, and LED lights are all used in ship interiors, depending on the specific application and requirements.

A navigation light system on a ship serves multiple purposes, including indicating the ship's position and status to other vessels, providing illumination for nighttime navigation, and assisting in docking and maneuvering operations.

VHF, HF, and UHF radio systems are all used for ship-to-ship and ship-to-shore communication, depending on the range, frequency, and specific requirements of the communication.

A radar system on a ship serves multiple purposes, including detecting and tracking other vessels and objects in the vicinity, measuring the distance to objects and obstacles, and providing navigation and collision avoidance assistance.

Diesel engines are commonly used on large ships due to their reliability, efficiency, and ability to operate on various fuels.

The propeller's primary function is to generate thrust and propel the ship through the water, allowing it to move forward or backward.

Rudder systems, azimuth thruster systems, and bow thruster systems are all used on ships for steering and maneuvering purposes, depending on the ship's size, design, and specific requirements.

A ballast system on a ship serves multiple purposes, including maintaining the ship's stability and trim, adjusting the ship's draft and buoyancy, and compensating for changes in cargo load and distribution.