This hardcover book was first published in 1946, This one was reprinted in 1947 and january 1951.  This is an original, it has five inserts inside. Total of 180 pages.

It is the third printing of the original.

Original owner's name is stamped inside the front cover: J. GUTH.

Cover shows wear From over the years.

According to the Title page of the book, this was used at the US Merchant Marine academy. It covers stability, calculations of various statistics for boat navigation, trim, marine disasters, and more.

Please see pictures.