The Admiralty Manual of Seamanship, 12th Edition 2015 The latest edition of The Admiralty Manual of Seamanship covers the seamanship requirements of today's modern navy, retaining the principles and underlying knowledge gained through years of experience. Published jointly by the Royal Navy and The Nautical Institute, the book has becomes a leading publication on the subject. It will be of benefit to all mariners, whether on naval ships, commercial vessels or leisure craft. All share the same need to carry out seamanship tasks safely at all times. A CD contains extra chapters including replenishment at sea.