This CD is a digitised version of the original which its title page says is "A List of Officers on the Active List of the Royal Navy, With their Dates of Seniority" as at 20 June 1888.
Consisting of over 640 pages (now all on one CD-ROM), there are thousands of persons names here. It is divided into categories such as List of Officers, Royal Navy, List of Officers on the Reserved and Retired Lists, Officers of the Royal Naval Reserve, Civil Departments of the Navy, the Coast Guard, the Stationary Ships and so it goes on.
Searchable. Pages can be enlarged for viewing, if required, and printed out as needed.