Propeller cleaning and polish is a measure used to increase the efficiency of a vessel's propeller. Over time and use, a propeller surface will become less smooth and become more susceptible to biofouling (i.e. corrosion, barnacles). When roughness of propeller increases, it decreases the efficiency of the propeller and let the colonization of unit by marine fouling, eventually increasing drag and fuel consumption. The surface finish of the blade is much critical than most shipowners realize, a few microns of increased roughness will increase fuel consumption. Regular cleaning and polishing of a propeller can help improve a vessel's functions and reduce the cost of consumption. It is recommended propellers be cleaned twice a year.

Sea chest is a vital component to a vessel located in the ship's hull connected to a piping system. It draws sea water into the ship which is used to cool the main engine and other purposes. The sea chest is protected by removable gratings. Barnacles and other marine fouling can build up over time on both the sea chest and sea chest gratings. A fouled or damaged sea chest can lead to the inadequate intake of water to the ship, affecting the vessel's main engine and overall performance.

Rudder is a primary component to a marine vessel, used to control and steer a vessel at sea. Due to its location at the stern of a vessel and it's full immersion in the water, the rudder is particularly susceptible to damage, corrosion, and marine growth. Routine inspection and cleaning of a rudder ensures the smooth and efficient operation of a marine vessel.

Bow thruster is a propulsion device, generally located in ship's bow, below the waterline and is used to provide lateral thrust to the vessel. This improves the vessel's maneuverability at low speeds, most commonly when docking and exiting or entering port. As with all underwater components to a marine vessel, bow thruster are subject to corrosion and damage. Regular cleaning and maintenance of a ship's bow thruster is vital to help maintain quality performance.

An anode is a part connected to a metal structure through an electrical circuit, whose purpose is to protect the structure from corrosion. The anode is made of highly reactive metal such as zinc or aluminum and is intended to attract the ions which caused corrosion. This in turn diverts those same ions from the structures the anode is attached to, therefore extending the overall lifespan of the vessel. As with any part of a vessel, anode will deteriorate over time, becoming less effective in corrosion prevention. Thus, it is crucial to regularly inspect and replace a ship's anodes, helping extend the overall lifespan of the vessel.