Explore how propulsion, electrical generation, fuel, cooling, lubrication and auxiliary systems depend on one another through guided, browser-based model exercises.
Educational simulation only. This is not a vessel operating procedure, an approved checklist, or a substitute for training, supervision, maker instructions or the vessel’s SMS. Never use it to operate real machinery.
Machinery and dependencies
The model presents a connected plant rather than isolated controls: diesel generators supply the electrical bus; fuel, starting air, cooling and lubricating-oil services support machinery; propulsion depends on verified supporting services; and auxiliary consumers affect available generation. Valves and machinery controls are part of the simulated model, not a representation of any particular ship.
Choose a lesson below to begin. Starting any lesson resets the model to that exercise’s initial state. Follow its prompts and observe the simulated response before proceeding; the Next step control is gated until the required model response occurs.
Model-only exercise; DG cooling and LO initial support are abstractions. Establish and verify propulsion services before starting the main engine.
Source basis and model limits
Principle: Starting permissives include turning gear disengaged, suitable starting air, cooling, lubricating oil and fuel; CPP/clutch arrangements affect startup.
Model limits: Black-start DG local cooling/LO and retained fuel priming are model assumptions, not a verified vessel black-start procedure. Bearing pressures, warm-up, start-air consumption, temperatures and timings are authored. Indicator-cock blow-through, barring, inspection, communications and control-transfer procedures are not simulated.
Marine Auxiliary Machinery by McGeorge.pdf, pages 512–513, 515
2. Shore transfer and live-bus synchronization
Model exercise only. Distinguish dead-bus energization from live-bus paralleling; shipboard switching procedure, interlocks and approved sync settings govern.
Source basis and model limits
Principle: Generator automation includes preparation, synchronization, breaker control, load sharing and protection. Distinguish energizing a dead bus from paralleling a live bus.
Model limits: The shore open-transition sequence, phase-sequence checks, protection coordination, voltage/frequency/phase windows and synchronization controls are model design, not verified installation switching instructions. Phase-sequence testing and real protection proving are absent.
Marine Auxiliary Machinery by McGeorge.pdf, pages 241, 515
3. Empty service-tank fuel recovery
Restore a finite MDO reserve, transfer generation and re-establish purifier feed. No universal diesel heating requirement is implied.
Source basis and model limits
Principle: Storage, settling and service tanks have different roles. The cited maker requires rated bowl speed before feeding. McGeorge describes diesel-fuel separation without heating.
Model limits: Tank grades are assumed correct. 200/100 L reserves, bowl target 9,000 RPM, pumping rates and source transfer are SIM values. Seal/operating water, drains, separator commissioning, real settling time, contamination assay and generator black-start preparations are absent. External shore availability is a scenario assumption.
Marine Auxiliary Machinery by McGeorge.pdf, pages 64, 66–67
Transfer finite MDO to settling after verifying receiving capacity; monitor overflow protections and isolate after stopping.
Source basis and model limits
Principle: Storage-to-settling transfer uses correctly selected source/receiver, level monitoring and overflow/remote-stop safeguards.
Model limits: Model valve tags, capacities and layout are not a verified valve register. A capacity observation is not an overflow-alarm or independent high-level shutdown test. Bunkering communications, sampling, spill containment and shipboard permissions are outside this exercise.
Marine Auxiliary Machinery by McGeorge.pdf, pages 64, 66
23-hfo-mdo-transfer-system-diagram.webp, pages 1
5. Overflow recovery, settling and purification
Recover segregated overflow to settling, then purify to clean day tank. Water-seal, drain and sludge controls are not modeled; perform no simulated claim of those steps.
Source basis and model limits
Principle: The inspected drawings route recovered overflow through the air-driven recovery arrangement to settling, not directly to a clean service tank. Rated separator speed precedes feed admission.
Model limits: Recoverability as HFO is an exercise assumption, not permission to burn dirty oil. Water/sludge removal, suitability analysis, seal/operating water and real settling time are absent. 50% pump speed, motive-air capacity, temperatures, reserves and bowl RPM are authored.
Marine Auxiliary Machinery by McGeorge.pdf, pages 66–67
6. Main engine interlocks, clutch and CPP
Verify delivered services, turning gear disengagement, actual CPP zero and clutch condition before starting; model thresholds are simulator-only.
Source basis and model limits
Principle: CPP requires hydraulic service and zero-pitch indication; a clutch/gearbox installation starts with clutch disengaged. Turning gear and engine services are startup permissives.
Model limits: Maker limits, clutch engagement conditions, interlocks, shaft inspection/barring/blow-through, control transfer and bridge permission are not fully represented. Demonstration turning-gear operation is not an engine prestart inspection. SIM pressures, speed and pitch targets are not manufacturer values.
Marine Auxiliary Machinery by McGeorge.pdf, pages 288, 512–513
7. Blackout recovery to main generation
Model-only abstraction, not an approved blackout procedure. Ship-specific generator preparation, protection and restoration priorities govern; this lesson does not restart the main engine.
Source basis and model limits
Principle: Generator automation covers preparation/protection and supply restoration; emergency generation has an independent fuel supply.
Model limits: This model energizes the main bus from DG2 before restarting electric services, relying on abstracted local DG support. It is not a source-verified vessel black-start checklist. The lesson restores services, not propulsion or every load; protection settings and restoration priorities are installation-specific.
Marine Auxiliary Machinery by McGeorge.pdf, pages 478, 515
8. Seawater loss and alternate intake
Prove the alternate suction and cooler path, then secure the blocked high-intake branch without mixing seawater and closed freshwater.
Source basis and model limits
Principle: Sea-water suction/pumping and central-cooler delivery reject heat from a separate closed freshwater loop. Prove the alternate path before securing a failed branch.
Model limits: Exact common-manifold arrangement, valve tags, capacities, delivery thresholds and heat transfer are modeled. A blocked high-chest scenario is not a complete casualty diagnosis, strainer-cleaning or sea-valve maintenance procedure.
Marine Auxiliary Machinery by McGeorge.pdf, pages 25–26
Recover a stopped-pump lubrication casualty; unload CPP, disengage the clutch and establish restart permissives. Real bearing inspection/authorization is outside the model.
Source basis and model limits
Principle: Remedy loss of delivered lubrication and restore all start permissives before resetting and restarting. CPP/clutch condition and turning gear status matter.
Model limits: The cause is a deliberately stopped pump, not a diagnosed bearing failure. No bearing inspection or maker restart authorization is represented. Pressure thresholds, trip/reset timing and jacket preheat target are authored SIM settings.
Marine Auxiliary Machinery by McGeorge.pdf, pages 512–513
10. Starting-air compressor and receiver isolation
Charge the receiver through a proved, cooled compressor route; SIM pressures are exercise thresholds, not universal limits.
Source basis and model limits
Principle: Compression needs cooling, unloaded starting arrangements and effective cooler/receiver drainage; starting-air oil/carbon carryover can cause explosion.
Model limits: The compressor unloader, moisture/oil drains, relief/check-valve testing and maintenance isolation are not modeled. 28/29 bar charging observations are SIM targets, not a pressure-switch or relief-valve setting verified for this equipment.
Marine Auxiliary Machinery by McGeorge.pdf, pages 51–52, 56–57, 61
41-starting-air-system-diagram.webp, pages 1
11. Thermal-oil and intermediate-water heating
Prove circulation in each separate heating circuit before heat input; the exchanger transfers heat without mixing fluids.
Source basis and model limits
Principle: Thermal oil and intermediate heating water are separate circuits connected thermally across an exchanger; establish circulation before heat input.
Model limits: The drawings establish schematic equipment and connections, not a universal startup procedure. Vents/deaeration, thermal-fluid degradation, expansion safeguards, burner protections and manufacturer temperature/flow limits are absent. Initial stored heat and transfer dynamics are authored.
Warm-circuit demonstration only. Furnace purge, flame proving, vents, drains and automatic water-level control are not modeled.
Source basis and model limits
Principle: The notes keep the main stop shut during pressure raising, then require slow warm-through with drains; water-level, purge and flame safeguards are essential.
Model limits: Warm-circuit exercise only. No furnace purge, FD fan, flame proving, vent, gauge glasses, blowdown, steam-line drains, water treatment or automatic level controller is simulated. Manual feed needs monitoring. Handwheel staging does not prove warm-through or prevent water hammer. SIM litres, pressures and condensed-equivalent kg/h are not rated boiler data.
Principle: This named manual requires at least 90% vacuum before jacket-water heating, controlled heating, salinometer use and off-spec product rejection. Polluted-water operation is prohibited.
Model limits: The manual is model-specific. Ejector inlet/back pressures, vent screw, dosing, heating bypass, steam-injector isolation, salinometer calibration, automatic reject and potable-water acceptance are not represented. Synthetic salinity/production are not real quality proof. The extraction speed and production rate are SIM values.
10M-2 INSTURCTION MANUAL FOR FRESSHWATER GENERATOR TYPE JWSP-26-C80_100.pdf, pages 7–10, 28, 38–39
Marine Auxiliary Machinery by McGeorge.pdf, pages 112
14. Hydrophore taps and freshwater source changeover
Supply a tap, then change to the standby pump and SB source without inventing vessel inventory.
Source basis and model limits
Principle: A finite air-cushioned vessel supplies taps while pressure switches cycle the freshwater pumps. UV treatment may follow the hydrophore.
Model limits: 2/4 bar pressure-switch values and vessel air-volume relation are authored. Starting the standby arms it: a satisfied switch can delay actual SB drawdown until demand calls. This short exercise verifies stored-vessel delivery and standby arming, not a completed long-duration supply-cycle test. UV efficacy, water chemistry and potable approval are not simulated.
Marine Auxiliary Machinery by McGeorge.pdf, pages 103, 112
15. Refrigeration cooling-loss trip and recovery
Restore and prove condenser cooling; allow pressure to fall before resetting the model cutout.
Source basis and model limits
Principle: Loss of condenser cooling raises condensing pressure; high-pressure protection stops the compressor. Remedy the cause and let pressure recover before restart.
Model limits: Refrigerant properties, charge, oil-differential protection, calibrated reset differential, leak checks and valve/service procedures are not fully modeled. 19 bar cutout and 17 bar observation target are authored, not refrigerant-specific maker settings.
Refrigeration & AC - (Notes).pdf, pages 8
Marine Auxiliary Machinery by McGeorge.pdf, pages 355
16. Steering standby-pump changeover
Establish standby hydraulic delivery before stopping the healthy duty pump; observe actual rudder response.
Source basis and model limits
Principle: Hydraulic flow moves the rudder; pump/ram isolation and non-return arrangements matter. The maker warns to open cylinder stop valves before starting and investigate abnormal pump noise.
Model limits: This is healthy standby changeover, not isolation of a ruptured hydraulic circuit. Reverse-rotation prevention, venting, replenishment, telemotor tests and full ram bypass/isolation are not represented. Hydraulic pressures and requested rudder angle are SIM values, not verified gear ratings.
17. Bilge recirculation, off-line fault reset and monitored flow
Observe contamination diversion, stop equipment before model repair, then verify monitored discharge. No discharge authorization is granted.
Source basis and model limits
Principle: OWS performance depends on maintained strainers/elements and oil characteristics. The cited FOCAS monitor alarms above 15 ppm. Contaminated flow must not use the model clean path.
Model limits: Fault-reset buttons abstract off-line maintenance; actual isolation, depressurization, sampling, monitor calibration/fail-safe testing and recordkeeping are absent. The ppm reduction is synthetic. Sub-15-ppm indication alone never establishes applicable legal discharge conditions or authorization.
10M-3 OILY WATER SEPARATOR.pdf, pages 13, 28, 68
18. Sewage aeration, transfer and shore discharge
Aerate and transfer, then isolate the reactor route before pumping treated holding to shore.
Source basis and model limits
Principle: The cited unit checks piping, power, outlet/automatic-level operation, blower lubrication/airflow and disinfectant before sewage admission; aeration sustains biological treatment.
Model limits: Generic lumped batch/shore-transfer model, not an SBT-25 replica. No biological residence time, disinfection, sampling, real automatic levels or legal discharge criteria are simulated; quality 45 is an invented index. The cited SBT manual excludes galley wastewater; this model’s combined domestic drain is not that installation. Shore receiver permission is not modeled.
10M-10 SEWAGE TREATMENT UNIT TYPE_SBT-25.pdf, pages 16–17
19. Local water-mist zone response
Local application is not total flooding: demonstrate zone flow without making evacuation, space sealing or whole-plant shutdown prerequisites.
Source basis and model limits
Principle: The indexed local-application text distinguishes local spray from total flooding: engine shutdown, personnel evacuation and space sealing are not prerequisites for local activation. Zone-specific visual/audible alarms are described.
Model limits: Automatic detection, the distinct audible activation alarm, certified nozzle performance, droplet distribution, required pressures and protected-area sizing are not modeled. 8 m³/h and instantaneous fire-flag suppression are SIM behavior, not proof of real extinction. The source’s historical regulations do not establish current vessel compliance.
20. CO2 warning, shutdown and guarded model release
Total-flooding control exercise, not an approved release procedure. Authorization, actual headcount, all boundary seals and real audible alarms remain off-model.
Source basis and model limits
Principle: Total flooding requires command decision, accounting/evacuation, complete sealing, machinery/fuel shutdown and pre-discharge warning/delay. Keep emergency boundary-cooling supply independent; beware re-ignition and lethal atmosphere.
Model limits: Only two dampers and model shutdowns are represented. Authorization, real headcount, doors/hatches/skylights, audible alarm, pilot/release mechanism and boundary-cooling supervision are not verified by the simulator. 60 s is a chosen SIM delay informed by one 60–90 s example, not a universal value. 100 kg-equivalent and cleared fire flags are not dose/concentration/extinction proof. Residual heat remains; no re-entry clearance is modeled.
FFA - CO2 Flooding System.pdf, pages 5, 17–19
Marine Auxiliary Machinery by McGeorge.pdf, pages 478
Scope and safety
All sequences, indications and responses are simulated and may be simplified, authored or incomplete. The simulator does not model every interlock, alarm, failure mode, environmental condition or vessel-specific configuration. It makes no claim of certification, competency assessment, or applicability to a current vessel.
For real operations, follow the vessel’s approved procedures and current instructions, confirm equipment-specific requirements, and work under the direction of authorized personnel.
Type a term (e.g. "GM", "Angle of Loll", "Bulbous Bow", "Panting")...
