Heinkel He 115 WNr 2398 emerges from the sea near Stavanger

[Seaplanes]

The He 115 was produced in the following versions excluding prototypes:
He 115A-0 (pre production series)
He 115A
He 115B-1
He 115B-2 (only difference to B-1 was optional ice runners under the
floats)
He 115B/C conversions only of B version aircraft with upgraded armamant
in form of the 20 mm MK404 gun under the nose and 2 x MG 17
firing rearward in engine necelles.
He 115C
He 115D (planned but never produced long range version)
He 115N (export to Norway 6 + 6 aircraft)
He 115S (export to Sweden 12 + 1 aircraft)
Some 67 B and C models were given extra fuel tanks by Weser in a conversion programme 1940/1941. This was done rather than producing the He 115D.
This information is based on a large number of original Heinkel, RLM and Luftwaffe documents.