Learning subject
Line Diagrams (P&ID)
Clear, modern one-line piping diagrams traced from real ship drawings — inspect valves, pumps and tanks to learn each component and how the system works.
Explore the lessons
01
Fuel Oil System — Interactive One-Line DiagramFull fuel oil system P&ID: bunkering, storage, transfer, settling, purifier loop, service tank, supply and circulating pumps to the main engine.
02
Marine Compressed Air & Main Engine Starting Air SystemInteractive marine starting air P&ID diagram: 30-bar compressors, receivers, fusible plugs, turning gear interlock, master starting valve, distributor, and cylinder starting valves.
03
Marine Central Cooling Water System (HT / LT / SW)Interactive marine central cooling water P&ID diagram: Sea Water, Low-Temperature (36 °C), and High-Temperature (85 °C) loops, plate coolers, thermostatic 3-way valves, and desalinator.
04
Lubricating Oil System — Interactive One-Line DiagramInteractive main engine lubricating oil P&ID: drain tank, main and pre-lube pumps, LO cooler, 3-way thermostatic valve, full-flow duplex filter, flanges R, U and Y, purifier loop and the alarm, slow-down and shut-down limits.
05
Bilge, Ballast & Fire Main System — Interactive One-Line DiagramInteractive bilge, ballast and fire main P&ID: bilge wells, mud boxes, screw-down non-return valves, the three bilge pumps, oily water separator and 15 ppm monitor, bilge injection valve, fire main with emergency fire pump, and the ballast main with change valve chest.
06
Steering Gear — Interactive One-Line DiagramInteractive electro-hydraulic steering gear P&ID: telemotor transmitter and receiver, hunting gear, two variable delivery power units, relief and isolating valves, the two rams, tiller, rudder stock and rudder, with the SOLAS steering gear requirements.
07
Steam and Condensate System — Interactive One-Line DiagramInteractive steam and condensate system P&ID for a motor ship: auxiliary oil-fired boiler, exhaust gas boiler, main stop valve, pressure reducing valve, fuel oil and purifier heaters, the intermediate heating water heater, steam traps, cascade and observation tank, feed pumps, feed stop and feed check valves, and the surplus steam dump valve.