Originally published in the Soviet Union, this book consists of three parts: Marine Fluid-Pressure Mechanisms, Specialized Auxiliary Machinery, and Shipboard Systems. Each part deals with the principles and fundamentals of the theory, design, and operation of a definite group of auxiliary machinery. The theory involved is presented on a level which enables the reader to understand the operation of the machines, to evaluate their operational characteristics, to make verifying calculations and select machinery for specific cases, and also to properly analyze new designs and master their operation. The author regards the theoretical, design and reference material presented as the basis for carrying out normal operation and maintenance of auxiliary machinery, but not as a source providing information on their design or complete calculation. The first part of the book is concerned with reciprocating, rotary, centrifugal, propeller and jet pumps, fans and fluid drives. The second part considers only specialized auxiliary machinery. The third part contains all necessary information on shipboard systems and the special systems of ice-breakers and tankers.