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Napoleão João Baptista Level

Napoleão João Baptista Level, Brazilian naval engineer (Ilhéus, Bahia State 20 November 1828 - Paris 1915)
 
 
From French parents. 
 
 
 
ACHIEVEMENTS  
 
The vessels that he designed and built are said to have unique and innovative features 
 
Constructed Ipiranga corvette, one of firsts in the world with screw propeller (1852)
 
Designed a distinct tower for monitor warships 
 

Built monitor warship Pará (1867) with the following innovations: armor-plated rotary conning tower with bulky gauge, propellant apparatus with 2 engines and 2 propellers and small load-draught