Originally printed in 1946, The Fleet Type Submarine series of technical manuals remains
unparalleled. Contained in its pages and those of the companion texts are descriptions of every
operating component aboard a fleet boat. Hydraulic Systems, Navpers 16169, describes the
system that powers the submarineÕs steering mechanism and diving planes. It is also a richly-
illustrated textbook that discusses hydraulic forces and their methods of employment. It
includes a detailed description of the operation, installation, and repair of various parts, and
outlines common problems and remedies. Originally classified ÒRestrictedÓ, this book was recently declassified and is here reprinted in book form. Some illustrations have been slightly reformatted, and color plates are reproduced in black and white. Care has been taken to preserve the integrity of the text.