Heinkel He-115

The Heinkel He-115 was a versatile German Luftwaffe floatplane primarily used for torpedo bombing, minelaying, and reconnaissance during World War II. It saw extensive action across the North Sea, Arctic, and along the Norwegian coast, playing a critical role in attacking Allied shipping convoys, particularly in Northern Norway. 
 
Key areas and operations included:
Northern Norway: Served as a major operating base for anti-shipping missions against Arctic convoys.
British Coastal Waters: Early in the war, it was used for laying parachute mines, including in the River Thames and off the English south coast.
Mediterranean: Employed in coastal reconnaissance and protecting supply lines for African operations.
Other Operators: Operated by Norway (during the 1940 invasion), Finland (against the Soviets), and Sweden (until 1952). 
 
It was considered one of the most successful seaplanes of the war, serving from 1939 through 1945 despite being vulnerable to fighters later in the conflict.