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Lubricating oil supplied to the main engine's main bearings, essential for reducing friction and preventing overheating or seizure.
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Browse Engineering terms for maritime professionals.
Lubricating oil supplied to the main engine's main bearings, essential for reducing friction and preventing overheating or seizure.
View termLubricating oil specifically formulated for use in reduction gearboxes, ensuring smooth power transmission and preventing gear wear or overheating.
View termThe fresh water circulating through the engine’s cylinder jacket to absorb heat and prevent overheating during operation.
View termThe process or system of segregating the engine room from other compartments to contain hazards such as fire, flooding, or toxic gas.
View termThe selected rotational speed at which a ship’s engine is set to operate, typically determined by bridge orders for maneuvering or voyage.
View termAn alert indicating the presence of excess water in the bilge spaces, often requiring automatic or manual pumping, and indicating possible leak or flooding, as per MARPOL and class regulations.
View termA warning signal indicating malfunction or abnormal condition in the steering gear system, requiring immediate crew investigation to ensure safe navigation and comply with SOLAS Chapter II-1.
View termAn audible and/or visual signal in the engine room, indicating an abnormal or hazardous condition in machinery, systems, or parameters that requires prompt crew attention according to the ship’s alarm management procedures.
View termThe controlled supply of lubricating oil to the main engine cylinder liners, essential for reducing friction and wear, as specified by engine manufacturer and class.
View termAn automatic function of the ship’s power management system that starts or stops auxiliary engines or generators based on electrical load demand, per SOLAS and class requirements.
View termThe procedure to initiate the ship's emergency generator to supply critical electrical power during a main blackout or failure of the main power supply, as required by SOLAS and vessel emergency protocols.
View termThe operation to start a ship’s auxiliary engine, which provides electrical power or essential services independently of the main propulsion engine, typically performed before arrival, departure, or critical shipboard operations.
View termA pump supplying seawater to coolers for cooling main and auxiliary machinery, essential for temperature regulation and engine safety.
View termAn automatic mode setting on the ballast pump, enabling the pump to start and stop based on tank level sensors or a central control system.
View termA backup pump in the engine room that automatically or manually provides lubrication oil flow if the main pump fails, ensuring critical machinery protection.
View termA pump located outside the machinery space, operated remotely to provide emergency or backup fluid transfer capability.
View termA large pressure vessel that stores compressed air for main engine starting and other critical pneumatic systems, maintained as per SOLAS and class standards.
View termA heat recovery unit using main engine exhaust gases to generate steam for shipboard heating or auxiliary systems, integral to energy management under MARPOL and SOLAS.
View termA unit designed to heat thermal oil used as a medium for transferring heat to fuel tanks, cargo systems, or other shipboard processes.
View termFuel oil pressurized to high levels for injection into main engine cylinders, delivered by high-pressure pumps as specified by engine manufacturer and SOLAS for efficient combustion.
View termA compressor that supplies high-pressure air for starting main and auxiliary engines, essential for engine readiness and maneuvering operations.
View termA device or system that records the number of revolutions of the propulsion shaft, providing critical speed and distance data.
View termThe central console or system used to monitor and operate the ship’s main propulsion engine, including remote start, stop, RPM, alarms, and critical parameter displays, typically located in the engine control room or bridge.
View termA safety device or procedure for rapidly stopping fuel supply to machinery or tanks in case of fire or other emergencies.
View termThe primary electrical distribution panel on board controlling power supply to all vital systems and equipment, designed and operated per class and SOLAS rules.
View termA mechanism allowing fuel to flow around a clogged filter element to maintain engine operation in emergencies, potentially introducing unfiltered fuel.
View termA control action or device used to disable fuel supply to a cylinder, usually for maintenance or troubleshooting, while engine is running.
View termA fixed device that continuously monitors and detects oil mist concentrations in engine crankcases to prevent explosions and ensure safe engine operation.
View termThe pressure or temperature difference measured across the intercooler, used to detect fouling or blockages affecting engine performance.
View termA mechanical device that controls the timing and sequence of starting air supplied to engine cylinders during main engine start-up, in compliance with class and manufacturer requirements.
View termA system that automatically injects water treatment chemicals into the boiler feedwater to control scale and corrosion, ensuring efficient and safe operation.
View termA heat exchanger used to maintain the temperature of hydraulic oil within safe operating limits for reliable system performance.
View termA heat exchanger that cools scavenge air supplied to main engine cylinders, increasing air density and engine efficiency as per engine manufacturer and class requirements.
View termA filter installed in the starting air system to remove contaminants from compressed air before it reaches engine cylinders for starting.
View termA shipboard device that produces potable freshwater from seawater using evaporation and condensation, essential for crew and machinery needs, and subject to MARPOL and class guidelines.
View termA shipboard unit that produces inert gas, primarily used on tankers to maintain a non-flammable atmosphere in cargo tanks, reducing the risk of explosion.
View termA computerized system on board ships that monitors and optimizes power generation and distribution automatically, ensuring efficiency and compliance with class requirements.
View termThe control and monitoring of burner operations on marine boilers to ensure safe and efficient ignition, combustion, and shut-down sequences.
View termThe assigned period when crew are stationed in the engine room to monitor, operate, and respond to machinery and alarms, in accordance with SOLAS and engine room management procedures.
View termA machine that breaks down asphaltene clusters and ensures uniform mixing of fuel oil, improving combustion quality and reducing sludge formation.
View termA propeller with blades whose pitch can be adjusted while running, allowing for variable thrust and improved maneuverability without changing engine speed.
View termAn instrument that displays key operational parameters of the main engine, such as load, RPM, and cylinder pressures, aiding performance monitoring.
View termA manually operated control that immediately halts machinery or electrical equipment in emergencies to prevent damage, fire, or injury.
View termThe presence or rapid ingress of water in the engine room spaces, posing a serious risk to machinery and vessel safety, requiring emergency response and reporting under SOLAS protocols.
View termA set operational restriction on the maximum shaft power output, typically to comply with EEXI and MARPOL Annex VI energy efficiency regulations.
View termAn official document or database on board identifying all essential machinery whose failure would significantly affect vessel safety, navigation, or pollution prevention, maintained as per ISM and class rules.
View termScheduled inspection, cleaning, and servicing of the engine turbocharger to ensure optimal performance and prevent breakdown, as per manufacturer’s recommendations and class rules.
View termA mode in which the propulsion and critical machinery are operated directly from the bridge, with command transferred from the engine control room for maneuvering or restricted navigation.
View termAn electronic device used to measure and control oil content in discharged water, ensuring compliance with MARPOL and pollution prevention standards.
View termA hazardous boiler condition where water level falls below the minimum safe mark, risking tube overheating, boiler damage, or explosion.
View termThe measured height of water within the deaerator tank, critical for ensuring proper removal of dissolved gases from boiler feedwater.
View termOperating main engines or generators at reduced output, often during harbor stay or maneuvering, requiring special monitoring to prevent issues like incomplete combustion.
View termThe process of using a soot blower system to remove accumulated soot from boiler tubes or exhaust gas economizers, ensuring efficient heat transfer and preventing fire hazards.
View termThe main interface on the bridge or in the engine room for controlling the vessel’s propulsion system, including speed, direction, and emergency stop.
View termA monitoring system that displays real-time readings from gas detectors, providing alarms if hazardous or flammable gas is detected in any compartment.
View termThe control interface for the ship's emergency generator, enabling monitoring, activation, and shutdown of emergency electrical power during critical situations.
View termA central control panel for monitoring, displaying, and logging engine performance parameters and alarms in real-time, often located in the engine control room.
View termThe complete stopping of an auxiliary boiler on board, including secure isolation and safety checks, typically during port stay or upon order.
View termAn automatic or manual action that stops the engine to prevent damage or hazard when critical parameters exceed safe limits, as mandated by SOLAS and machinery safety systems.
View termThe precise setting of the fuel control rack that determines the amount of fuel delivered to each cylinder of a diesel engine.
View termThe selected position of the manoeuvring lever on the bridge or engine control console, determining direction and speed of the main engine during vessel maneuvers.
View termA documented process for safely switching the ship’s fuel supply from one grade or type to another, often to comply with sulphur regulations in emission control areas.
View termA mechanical safety cover installed over rotating pump couplings to prevent injury and contain parts in the event of failure.
View termA controlled procedure for verifying a generator’s capability to supply rated power by gradually applying electrical loads while monitoring performance parameters.
View termAn operational procedure to verify the flow rate and performance efficiency of the lubricating or fuel oil centrifugal purifier under specified conditions, as per manufacturer and class requirements.
View termA routine operational test to verify that the engine speed governor responds correctly to load changes, ensuring engine safety and performance.
View termA procedural check to verify that a non-return (check) valve allows fluid flow in only one direction, preventing backflow in piping systems.
View termA designated engine room console enabling manual operation and monitoring of main engine or machinery independently of the remote (bridge) controls.
View termA centrifugal device used on board to remove water and contaminants from lubricating oil, ensuring optimal engine operation and longevity.
View termA device or software system that automatically records and stores key engine parameters for performance monitoring, diagnostics, and compliance documentation.
View termThe process of distributing electrical or mechanical load evenly between two or more engines or generators operating in parallel to optimize performance and prevent overloading, as per engine room procedures and automation systems.
View termA system that automatically reverses flow through filters or strainers to remove debris and maintain performance without manual intervention.
View termA maneuver in which the main engine’s rotation direction is reversed, allowing the ship to go astern or stop.
View termA prescribed procedure to restore shipboard power and restart essential systems after total electrical blackout, ensuring safe and rapid recovery of propulsion and control.
View termA sealing device at the exit point of the ship’s propeller shaft through the hull, preventing water ingress and oil leakage, and critical for propulsion integrity.
View termA device that measures and transmits the temperature of exhaust gases, crucial for monitoring engine performance and preventing overheating or thermal damage.
View termThe process of matching the voltage, frequency, and phase of an incoming generator to the busbar before connecting it in parallel with the existing power supply.
View termThe network of pipes, pumps, and heat exchangers circulating water to remove excess heat from the main engine and auxiliary systems.
View termA system allowing the operation and monitoring of shipboard machinery or equipment from a location other than the equipment itself, such as from the bridge or engine control room, compliant with SOLAS and class requirements.
View termAn automated system that disconnects non-essential electrical loads to prevent total blackout when generator capacity is insufficient.
View termAn automated safety mechanism that prevents certain engine operations unless predefined conditions are satisfied, protecting equipment and personnel from unsafe procedures.
View termAn electronic or manual system for measuring liquid levels in ship tanks, such as fuel, ballast, or fresh water, to ensure safe operations and compliance with MARPOL and class.
View termA condition in which an electric motor draws current above its rated limit, risking overheating and possible failure unless protected by automatic tripping devices.
View termA designated suction line and valve in the engine room bilge system used only in emergencies to rapidly remove water from flooded compartments, as required by SOLAS regulations.
View termA dedicated tank for storing diesel oil, used for main engines, auxiliary engines, or emergency generators on board ship.
View termA compartment at the bottom of the ship, between the inner and outer hull, used for ballast water, fuel, or as a safety measure against grounding.
View termA tank designed to collect and store sludge and contaminants removed by fuel or lube oil purifiers before final disposal.
View termA pressurized tank in a ship’s fresh water system that maintains constant water pressure for domestic and service use throughout the vessel.
View termA signaling system between bridge and engine room, used to transmit engine speed and direction orders during ship maneuvering.
View termThe measured temperature of a ship’s main propulsion shaft bearing, monitored continuously to prevent overheating and possible bearing failure.
View termA mechanical device that transfers engine power to auxiliary equipment such as generators or pumps, typically via a shaft coupling.
View termThe process of pumping fuel oil from one tank to another or to the engine, requiring strict adherence to MARPOL, safety, and spill prevention procedures.
View termThe process and system for providing safe airflow in the pump room to prevent accumulation of explosive vapors and maintain a safe working environment.
View termThe provision and regulation of air flow to the engine room to remove heat, fumes, and ensure safe working conditions, as per SOLAS and class rules.
View termThe measure of a fuel oil’s resistance to flow, critical for engine injection and atomization; monitored and regulated in shipboard fuel systems.
View termA safety device fitted on engine crankcases that vents pressure and flame in the event of a crankcase explosion, reducing risk of damage and crew injury.
View termA seacock or valve fitted at the hull sea chest, controlling seawater intake for engine cooling, ballast, or firefighting.
View termA valve that releases excess steam from boilers or turbines to prevent overpressure, often routed to the atmosphere or condenser in emergencies.
View termA valve used to maintain a set pressure in a piping system by opening or closing in response to changes in upstream or downstream pressure.
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