Box containing nine folders/books of letters and documents:

- one folder of discussion documents re design of protected torpedo boats.
- one folder containing details of the arc of davits.
- one folder containing Comus reports 1877 - 84.
- one folder containing the description of voice pipes/telegraphs adn gongs for HMS 'Galatea' and HMS 'Australia'.
- one folder containing a document detailing about separators for HMS 'Ajax'.
- one folders of letters for 'Druid'.
- one book containing metacentric curves for unarmoured ships except troop ships.
- one folder of reports on models of proposed new vessels of the Comet class 1877.
- one folder of letters re 'Trincula' a tugboat for Ascension.