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