In German, Flugdeckkreuzer literally means "Flight Deck Cruiser." A cruiser with a flight deck.OT
I suspect that the word Flugdeckkreuzer inspired the name through deck cruiser. Does anyone know?
A more proper translation into English would be, "aircraft carrying cruiser."
As to it being the root for the "through deck cruisers," I can't say.
The Japanese used similar considerations for their aerial battleship conversions they did to the Ise battleships after the Battle of Midway.
I found a good description of the conversionof the Ise:
She was never used in this role however becasue by the time she was completed, launched, trialed, and her aircraft training completed, the Japanese simply did not have enough planes to deploy to her, and what planes they did have went to their other carriers, and finally in defense of the home islands.Ise refit said:To partially compensate for the loss of carrier strength at the Battle of Midway, the Japanese Navy Aircraft Department began plans to convert the Ise-class battleships to full-sized aircraft carriers each carrying 54 planes. This concept was abandoned due to lack of time and resources and a hybrid battleship/carrier concept was adopted.
Ise was dry-docked, and her aft No. 5 and No. 6 main turrets were removed and replaced by a hangar surmounted by a 70 m (230 ft) long flight deck and a "T"-shaped aircraft elevator. This was long enough to permit the launch of aircraft, but not their recovery. Plans called for the new hangar to carry nine planes inside, with 11 on deck and two on each catapult; however, it was later realized that a single faulty aircraft engine could ruin the whole concept. To prevent jams, the deck was fitted with two rails, 12 turntables, trolleys and tie-downs. Two 25 m (82 ft) Model 11 catapults were installed on tall supports on the port and starboard sides forward of the flight deck. A collapsible derrick crane was fitted port abaft. The new deck was covered with 200 mm (7.9 in) of concrete to compensate for the unbalanced condition created after removal of the aft armament. A 1 m (3 ft) thick layer of concrete was also poured around the main and reserve steering rooms and a 150 mm (5.9 in) horizontal armor cover was added.
Additional anti-aircraft weapons were installed to better fight off aerial attack. The eight single 127 mm (5.0 in) DP guns were replaced with eight twin-mounts, and the Type 96 25 mm (0.98 in) AA guns were increased from 20 to 57 (including 19 triple-mounts). Type 21 air-search radar and two Type 22 surface-search radars were also installed. As modified, Ise could carry 22 aircraft.
The operational concept envisioned Ise accompanying the Kido Butai (Carrier Strike Force), and launching its 11 Yokosuka D4Y2 Suisei ("Judy") dive bombers and 11 Aichi E16A Zuiun ("Paul") seaplanes that are capable of diving attacks to add another 44 bombers to the Strike Force. The Suisei had to land either on a conventional carrier or on land bases, whereas the E16A could be hoisted back aboard after landing near the ship by using a crane. Ise's final aircraft allowance called for 14 E16As and eight D4Y2s.