For me flying boats and float planes are a passion! (You may have noticed??) There is something about these aircraft that exude grace, power and reliability all wrapped up in a menacing package. Some like the Short Sunderland, Consolidated PBY5 Catalina and the Kawanishi H8K2 (Allied code name Emily) were accomplished killers. And in the cases of the Sunderland and the Emily were heavily armed and armour plated targets. The Emily having a massive total of five 20mm cannon (yes that’s FIVE!) and 4 303 calibre machine guns.
Some like the German He115 and the Italian Cant Z506B were effective torpedo and anti submarine platforms. Although not flying boats they were dedicated maritime airplanes. Both were bombers and shipping strike aircraft, although their speed made them vulnerable to single engine fighters they did have a reasonable defensive armaments. Unfortunately the more armaments you put in an airplane the more you degrade their performance leading to a catch 22 situation.
Intriguing and engagingly well written post about Seaplanes and amphibians well worth the read!