THE previously described boilers, having the water outside the tubes and contained in an outer…

Figs. 37 and 38 show a double- ended boiler. This is a common type for…

Low-pressure boilers.  The first boilers fitted to work marine engines were of the rectangular, or…

In many cases in the mercantile marine the stage expansion principle is carried still further,…

With initial steam pressures above 100 lbs. per square inch, the variation of temperature in…

The vertical type of engine, with cylinders at the top and crank-shaft below, was adopted…

The majority of steamers, both war and mercantile, built during the years 1850-60, were fitted…

This kind of engine was adopted by the majority of marine engineering firms to enable…

In order to attain the same speed of ship the screw propeller had to be…

The paddle-wheel possessed many practical disadvantages which interfered with progress beyond a certain point. Its…