Pick a system on the drawing to see what it does, which parts are usually requested for it and what to send with the RFQ. The circuits show how fuel, lubricating oil, cooling water and starting air connect the machinery.
The drawing is a generic layout, not a specific ship: arrangements differ between vessels, and the parts list for your equipment is confirmed only at RFQ review.
The propulsion engine. On most cargo ships it is a slow-speed two-stroke crosshead engine that drives the propeller shaft directly; many smaller vessels use a medium-speed four-stroke engine through a gearbox.
Connected circuits
Fuel oilLube oilCooling waterStarting air
Our photo: a six-cylinder main engine from the upper platform
Typical RFQ lines
Cylinder liners, piston crowns and piston rings
Exhaust valves, spindles and seats
Fuel pumps, injectors and nozzles
Main, crankpin and crosshead bearing shells
Overhaul gasket and seal kits
Send with the request
Full engine designation and engine serial number
Cylinder number for liner, bearing and fuel-pump lines
Driven by the engine's exhaust gas, the turbocharger compresses the charge air the engine burns its fuel with. A main engine usually carries one or two large units; each auxiliary engine has its own.
Connected circuits
Lube oil
Typical RFQ lines
Rotor and cartridge assemblies
Nozzle rings and diffusers
Bearings, bushes and seals
Compressor wheels
Filter silencers and casing parts
Send with the request
Turbocharger maker and type from its own nameplate
Turbocharger serial number
Engine maker, model and application (main or auxiliary)
Medium- or high-speed diesel engines driving generators, usually three or more, supply the ship's electrical power. Builders often fit them from a different maker than the main engine.
Connected circuits
Fuel oilLube oilCooling waterStarting air
Our photo: generator set AE 3, engine and alternator on one bedplate
Typical RFQ lines
Cylinder heads, valves and seats
Pistons, rings and liners
Fuel injection pumps and injectors
Turbocharger and cooler parts
Gasket and overhaul kits
Send with the request
Engine maker, model and serial number
Generator set position (No. 1, 2, 3) where parts differ
Centrifugal pumps move sea water, fresh water and ballast; fuel is handled by screw or gear pumps, and main-engine lubricating oil by screw or centrifugal pumps. Most systems carry a duty pump and a standby.
Connected circuits
Cooling waterLube oil
Our photo: vertical pumps named by service, not by maker
Plate and shell-and-tube heat exchangers cool the engines' fresh water and lubricating oil, usually through a central cooler that passes the heat to sea water.
Connected circuits
Cooling waterLube oil
Our photo: a plate cooler on main-engine lube oil
Typical RFQ lines
Plates and gaskets for plate heat exchangers
Tube bundles and end covers
Gasket kits
Frame and tightening parts
Send with the request
Maker, model, frame size and unit serial number
Plate count and plate material
Gasket material, glued or clip-on, and service side
An oil-fired auxiliary boiler and an exhaust-gas economiser in the funnel casing raise steam for fuel heating and the accommodation; at sea the economiser recovers heat from the main engine's exhaust.
Main air compressors charge the starting-air receivers that start the main and auxiliary engines; working and control air usually comes from separate compressors.
The main switchboard distributes generator power through air and moulded-case circuit breakers; the engine control room holds the alarm, monitoring and governor equipment.
Treats bilge water so it can be discharged within the MARPOL limit of 15 ppm; a 15 ppm bilge alarm, also called an oil content meter, monitors the discharge and stops it if the limit is exceeded.
Maker names identify equipment only. Vessel Core OÜ is an independent supplier; availability, documents and the supply route are confirmed for each RFQ. Photographs in the system cards are our own, taken aboard vessels during yard and client visits; a maker is named only where its name is on the machine.
Questions
About the drawing
Is this drawing of a specific ship?
No. It is a generic engine-room layout drawn to explain the systems. Real arrangements vary with ship type, builder and engine choice, so treat positions as illustrative.
Does Vessel Core supply parts for every system shown?
Each system links to the pages where we describe the equipment families we work with. Availability, documents and the supply route for a specific part are confirmed at RFQ review, not in advance.
My equipment is not on the drawing. Can I still send an RFQ?
