The roll contains seven charts detailing soundings taken by the Humber Conservancy Board during surveys undertaken between various sea marks in the Humber. It includes the following surveys:

1. Examination between No. 16 Sand End and No. 26 Upper West Middle Light Floats: 11–12 and 15 March 1954

2. Examination of reported shoaling in vicinity of No. 16 Burcom Light Float: 18 March 1954

3. Examination between No. 26A Light Buoy and No. 23 Hessle Sand Light Float: 25–26 and 29 March 1954

4. Examination between No. 23 Hessle Sand Light Float and No. 26 Light Buoy: 4–5 and 7 May 1954

5. Examination between the No. 28 and No. 23 Light Floats: 18 June 1954

6. Examination between the No. 28 and 23 Light Floats: 19 July 1954

7. Examination between No. 20 and No. 24 Buoys: 1 June 1955

Scale: 6 inches to 1 statute mile [1:10560]