Norwegian Steamships

Steamship Oster from Bergen

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

"Oster" is not a random name. The steamship was built to transport important gods and passengers, deliver milk to the dairies and distribute mail in the Oster-fiord region.

The engine room onboard Steamship Oster

The top of the triple expansion engine.
In a steam engine provided with Stephenson's 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 onboard Steamship Oster.

The propeller-thrust-block, to the left, is an axial bearing that imparts the propeller force to the ship.