Each record includes an image of the original WW1 Ship Casualties Card Index held at The National Archives.
The WW1 Ships Lost at Sea records will give you a combination of the following information:
The National Archives holds the WW1 Ship Casualties Card Index in the series ADM 242/6.
Enter a year in the search box above to find a list of ships destroyed around that date. You can use the ‘+/-’ option to search a few years either side of the one you enter.