The Royal Navy Officer's Jutland Pocket-Manual 1916
There is an Introduction by Brian Lavery.
First published in 1916 as "New Battleships Organisations and Notes for Executive Officers" The subtitle is "Being extracts from a notebook, kept by the author during the last four years, on novel methods of organisation, internal economy, and seamanship".
This is a wonderful little book, full of bits and pieces of information on running a big ship; it helps us understand what life on one of these magnificent ships was like.