The file contains preliminary lists of shipowners at the Ports of Kingston upon Hull, Goole, and Grimsby – as registered on 31 August 1940 – eligible to vote in elections of Commissioners to the Humber Conservancy Board. Each entry provides the following information:

1. Owner's Name (either an individual or company)

2. Owner's Address

3. Names and tonnage of each registered vessel

4. The number of shares owned in the vessel

5. Any further remarks

The file also contains printed, and revised printed lists.