The folder contains a range of assorted plans submitted to the Humber Conservancy Board by manufacturers of launches [boats] for consideration for purchase by the Board for use on the Humber:

1. 'Motor Boat for Pilot Steamers'. Scale: 1 inch and 1½ inches to 1 foot [1:12 and 1:8]. S/651/36 (n.d.).

2. '30'-0'' General Service and Mooring Launch'. Scale: ½ inch to 1 foot [1:24]. Drawing No. 30/65/1. Johh Bushell Limited (n.d.).

3. '40'-0'' Towing Launch'. Scale: ½ inch to 1 foot [1:24]. No. B. 40/47/5. John Bushell Limited (n.d.).

4. 'Motor Boat Typ 17/2 x SRP 75'. Schottel-Werft Josef Becker (22 November 1956).

5. 'Proposed Steel Motor Launch'. Scale: ½ inch to 1 foot [1:24]. J. S. Watson (Gainsborough) Limited (3 January 1958).

6. 'Preliminary G. A. Drawing 55 foot Pilot Launch'. Scale: ¼ inch to 1 foot [1:48]. Drawing No. EL. 2109. PS. Brooke Marine Limited (25 August 1961)

7. 'Proposed 60 foot Pilot/Supply Launch'. Scale: ⅜ inch to 1 foot [1:32] (11 December 1962).

8. 'Arrangement of Pilot Launch'. Scale: ¼ inch to 1 foot [1:48]. Drawing No. 27120. Messrs John I. Thornycroft (10 December 1965).

9. 'General Arrangement of 40'-0" Glassfibre Pilot Launch'. Scale: ¾ inch to 1 foot [1:16]. Drawing No. A. 1758. Watercroft Limited (23 March 1966).

10. '60'-0" Twin Screw Survey Launch: Preliminary General Arrangement''. Ship No. 1248. Scale: ½ inch to 1 foot [1:24]. Watercroft Limited (28 June 1967).

11. 'General Arrangement of 40'-0" Glassfibre Twim Screw Pilot Launch'. Scale: ¾ inch to 1 foot [1:16]. Drawing No. A. 2038. Watercroft Limited (14 June 1968).

12. '40 foot T. S. Pilot Launch: General Arrangement'. Scale: ½ inch to 1 foot [1:24]. Watercroft Limited (6 May 1969).

13. '40 foot T. S. Launch for Trinity House Pilotage Service: General Arrangement'. Scale: Scale: ½ inch to 1 foot [1:24]. Watercroft Limited (2 April 1969).

14. 'T. S. Pilot Launch: General Arrangement'. Scale: ½ inch to 1 foot [1:24]. Keith Nelson and Company Limited (n.d.).