Hi Chris. It must be the single hangar on the starboard side under the funnel as the doors face the stern and the boats on top face forward; the double hangar was under the mainmast. Note the distinctive Bismarck / Tirpitz pitched roof.
This is a very good model but it also shows the deck layout well..............
http://www.kartonmodellbau.net/pics/...MV%201_200.htm
The hangar design is here...............
https://www.bismarck-class.dk/techni...ale_plans.html
Some nice close-up details, the main double hangar is on image no.29.........
https://www.worldwarphotos.info/gall...rine/bismarck/
I think the 2 ships were similar apart from some details.
Nick