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เนื้อหาย่อ : PREFACE TO THE FOURTH EDITION Intrh en reret ceoien perpino minor revri ions have hbecen cnecos developments. In addition major revisions of individual chapters have been made as follows. ables are now being manufactured to metric dimensiot view of this, the tables of current ratings of cables in Chapt have been revised to include metric quantities. The chapter on lighting has been completely rewritten and brought up-to-date by Mr. R. S. Crossley, and Mr. R. W. Veenstra. A new chapter has been added on the subject of automation, control and instrumentation which, among other aspects, deals with the concept of the unmanned engine room and centralised control stations. It is hoped that the information given in this chapter will assist the marine engineer in understanding this complex subject.