Specifications for a mud steam engine vessel (proposed 1830s?)

4 page specifications undated and unsigned for building a dredging machine/mud steam engine for the Port of Portsmouth.
A second document with the same dimensions - 3 pages of rough draft - mentions a date which could be deciphered as 22 January 1835.

ADMB 0787

Object Details

ID: ADT0205
Type: Manuscript
Display location: Not on display
Date made: 22 January 1835?
Credit: © Crown copyright. National Maritime Museum, Greenwich, London
Measurements: Overall: 390 mm x 245 mm
Parts: Box