Record

Ref No	DM1306/11/1/2/folio 116-118
Title	Letter from C.A. Hohn of John Bourne & Co to Isambard Kingdom Brunel
Description	Written from John Bourne & Co, Greenock. The letter reminds Brunel of his previous meeting with Hohn regarding Hohn's design for the screw propeller, describes the elements that make his propeller special and suggests how Brunel can get a copy of a drawing of Hohn's propeller. The letter also lists the various vessels that incorporate his propeller design including the Alma and the Barwon and comments on some experiments that have been made between the common screw propeller design and Hohn's. The letter also gives some of Hohn's credentials and explains that the source of his interest in the efficiency of screw propellers stems from the relative inefficiency of the screw propeller used in the trials of the ship the Rattler.
Date	31 May 1855
Format	Manuscript volume
Extent	3 pages
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Access Conditions	This material is held at the Brunel Institute - please contact the Brunel Institute to arrange access.

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