The basic objective of this handbook is to provide special assistance to system and component engineers and human factors specialists in performing those portions of their engineering activities which may result in the specification or design of hardware to be operated and/or maintained aboard FBM submarines. As a matter of convenience, the handbook is being published in two volumes. Volume 1, 'Design of Systems, ' contains Sections 1 and 2 of the handbook and provides a basis for establishing the evaluating alternative system and subsystem concepts with respect to man-machine requirements, capabilities, and trade-offs.