Norwegian Steamships

Steamship Oster from Bergen

The Steamship Oster moored outside the
whaler Southern Actor at quay in Gothenburg.

The engine room onboard SS Oster

The top of the triple expansion engine.
In a steam engine provided with Stephenson's reversing link motion are cylinders and steam chests always in a straight line.
From the top:
the low pressure cylinder,
the low pressure slide valve chest,
the intermediate pressure cylinder,
the intermediate pressure slide valve chest,
the high pressure cylinder,
the high pressure slide valve chest, the latter is a round slide valve, hardly visible on the picture.

The triple expansion steam engine.

The propeller-thrust block