11/30/2008. Remarks by Johan Visschedijk: "Dr. Claudius Dornier (May 14, 1884 – December 5, 1969) joined the Zeppelin-Werke Lindau GmbH in 1910 as a test engineer. Dornier soon started to design aircraft and in December 1914 moved with his staff of designers and draftsmen to nearby Seemoos to form the Dornier-Werke department of Zeppelin, although the Rs-types (Riesenflugbote giant flying boats) were built at the Zeppelin works. It was not before January 1, 1917, Dornier's department became a company under the umbrella of Zeppelin, hence, this Riesenflugboot (giant flying boat) is listed under Zeppelin.

The Rs.II was originally produced with three 240 hp Maybach Mb.IV six-cylinder in-line engines embedded in the fuselage driving three pusher propellers via transmissions. After a few flights the power plant number and arrangment were changed, four 240 hp Mb.IVs were paired in push-pull configuration between the wing and the top of the fuselage.

Span: 108 ft 11.1 in (33.20 m)
Length: 78 ft 4.2 in (23.88 m)
Height: 24 ft 11.2 in (7.60 m)
Wing area: 2,766 sq.ft (257 sq.m)
Weight empty: 15,653 lb (7,100 kg)
MTOW: 20,190 lb (9,158 kg)
Max speed: 80 mph (128 kmh)
Service ceiling: 9,843 ft (3,000 m)

Most likely the designations Rs.IIA and Rs.IIB, found in a number of sources, have been allotted (by?) after 1920 to distinguish the two versions."