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Inside the ship
Boat deck
Fourth funnel
Not functional. Added for aesthetics but also provided ventilation
White Star Line pennant
Flown from 8am to sunset
Propulsion
Titanic's size meant it required very powerful machinery to push it along
Smoke uptakes
All boiler rows were fitted with uptakes to channel smoke up to the funnels
Watertight bulkhead
15 throughout the hull
1. Boilers
Generate highpressure steam
2. Reciprocating engines
Steam moves through each cylinder driving the pistons
3. Centre turbine
Steam exits the engines and is fed to the turbine which drives the centre shaft
4. Condensers
Turn used steam back into water
5. Water
Fed back to boilers to be reused
Outer shafts each driven by engine
Scotch boilers
Steam to power the engines and turbine was produced in 24 double-ended and five single-ended boilers 
Stokers
Continuously shovel coal into the boilers
Sources: Shipbuilder's plans, Haynes



The Titanic