even as she was being built, "furious" was modified with a large hangar capable of housing ten aircraft on her forecastle that replaced the forward turret. a 160-foot (49 m) flight deck was built along its roof. aircraft were flown off and, rather less successfully, landed on this deck. floatplanes like the short type 184 used a four-wheel trolley that ran down a track along the centre of the flight deck for take-off. aircraft were lifted by crane from the hangar to the flight deck. although the aft turret was fitted and the gun tested, it was not long before "furious" returned to her builders for further modifications. in november 1917, the rear turret was replaced by a 300-foot (91 m) deck for landing aircraft over another hangar. her funnel and superstructure remained intact, with a narrow strip of decking around them to connect the fore and aft flight decks. turbulence from the funnel and superstructure was severe enough that only three landing attempts were successful before further attempts were forbidden. her 18-inch guns were reused on s and during the war.