It comprised a small fire tube boiler with a detachable flue which could be heated either outside or indoors with the flue connected to a chimney.
2.
All the ships to be built were collectively called the triple-expansion reciprocating steam engine and coal-fired Scotch-type fire tube boilers.
3.
Steam was initially supplied by 14 horizontal multi-tubular under-fired ( Colonial ) fire tube boilers by G . & C . Hoskins, Sydney.
4.
The ship was propelled by single, impulse-reaction type, reduction geared turbines furnished with steam by oil fired tube boilers for about 6, 500 horsepower.
5.
The third steam raising unit was a relatively conventional locomotive fire tube boiler operating at 250 psi ( 1.7 MPa ) heated by combustion gases from the coal fire.
6.
Fire tube boilers were the main type used for early high-pressure steam ( typical steam locomotive practice ), but they were to a large extent displaced by more economical water tube boilers in the late 19th century for marine propulsion and large stationary applications.
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