How long does it take to read The Ultra Secret?
Frederick William Winterbotham
The Ultra Secret by Frederick William Winterbotham takes about 5 hours 15 minutes to read at 250 words a minute.
About 5 hours 15 minutes
A weekend read
First published 1975. 286 pages, about 78,650 words.
11 days at 30 minutes a day
Estimate based on 275 words per page.
At other speeds
| Slow, 150 words a minute | 8 hours 44 minutes |
| Average, 250 words a minute | 5 hours 15 minutes |
| Fast, 400 words a minute | 3 hours 17 minutes |
The page count is the median across 1 edition, so your copy may differ. How we calculate.
About the book
Operation Ultra was designed to intercept & decode German signals sent using Enigma, the top-secret German cypher machine. F.W. Winterbotham, was the man responsible for the organization, distribution & security of Ultra. This is his personal account of the operation.
Subjects: English Personal narratives, Secret service, Cryptography
