Books like Lord Hornblower
C. S. Forester
Lord Hornblower is 245 pages, about 4 hours 30 minutes at 250 words a minute.
12 books to read next
How long each takes
H.M.S. Surprise 7.6 h 
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The Hundred Days (Aubrey-Maturin (Audio)) 5.2 h 
Master and Commander 7.6 h 
Sharpe's Eagle 5.4 h 
Sharpe's Rifles 6.4 h 
Sharpe's Enemy 6.5 h 
Sharpe's Sword 5.9 h 
Sharpe's Honour 5.9 h 
Sharpe's Escape 6.9 h 
Sharpe's Havoc 7.0 h 
Sharpe's Trafalgar 5.4 h Bar height shows length. Estimated at 250 words a minute.