This book is intended to cover the basic theory underpinning applied work detailed in various syllabi for Electrotechnology written examination, including the maritime coastguard agency (www.dft.gov.uk/mca) Department of Transport Examinations for class 1 and class 2 engineers (General engineering science II, STCW III/2 second engineer, and STCW III/2 Chief engineer) but is designed to be much more than an exmination focused book.