Box containing eleven folders/books of letters and documents:

- one booklet titled 'X craft handbook Volume One Technical'.
- one booklet titled 'HM Tug 'Accord' Trial trip results Full Power Trials 1958'.
- one booklet titled 'HM Tug 'Confident' Trial trip results Fuel Consumption and Propellor Pitch Trials, 1956'.
- one booklet titled 'Design Study for medium length fast patrol boat'.
- one booklet titled 'HMS 'Vidal' surveying ship turning trials Final Report'.
- one folder containing the report of engine trials, 1956 for 'Bold Pathfinder'.
- one folder containing a table of guages.
- one folder containing information on the Dark Class fast patrol boat.
- one folder containing a report on large convertible MTB/MGB 1947/48 programme, 1952.
- one folder containing three tenders for sterilising equipment.
- one folder containing two reports re damage to a large hospital ship.