@ kabelodeovo ~ I don't have a problem with your English, mine is not better ...
I've searched around a bit, and so far it is unknown which of the Arados had been considered. Furthermore, the names of the crew are known but they can't be associated with a certain plane. All eight of the crew and all ten of the 'ground crew' were lost.
On board were:
T3+IH, T3+AK, T3+DL and T3+MK
I think all models showing one or two planes on deck do this because of artistic license, and not because of representing a snapshot of history. Maybe you can tell from the combination of the ship's course and the prevailing wind direction, which catapult could have been used. We can only speculate that they took one of the two planes from the big hangar, since they only found one machine in there on the wreck. Maybe the other is burried in mud, wreckage and other clutter inside the hangar - or the one missing is the one they dumped into the sea after they realised the pressure system failure. Anyway, this still doesn't tell you which number the plane carried.
And this in turn means that no-one can say that your model is wrong!
The boats ~ Bismarck carried six boats on the main deck. I can't remember their size, but these were all cutters. Two of them between the forward secondary turrets, one on either side. The other four, two one either side, one smaller inside one larger, between the catapult and the after secondary turret. On photos taken in Norway and thereafter, none of these boats are visible. In fact, photos of the sea-trials do not show the four aft boats, but the two forward ones. The latter were removed shortly before the start of Rheinübung, if I recall correctly.
@ navydavesof ~ They even began building the first two. This was the 1939 design. Around the start of WWII, the stopped construction and scrapped the material already spent. All the later designs, up to H-44, were, as I understood it, just studies and none of them was really considered for construction. Maybe just in one of AH's weird moments...
Sorry, I don't know much more about it.
Happy modelling ~ Olaf!