Thulin G was a Swedish-made heavy seaplane that was used by the Navy flygväsende during the 1910s.

The aircraft was double-deck with a fuselage constructed in a lattice structure of square cross section. The upper wing was supported by struts 12 from under the wing and 4 struts from the fuselage. line engine was mounted in the nose of the aircraft where it ran a wooden propeller . Engine exhaust was led through a manifold that ended at over the wing upper surface. The pilot sat in the front cockpit, which was placed under the wing while the scout was sitting in a cockpit behind the wings to allow for good visibility to the sides. As the landing gear using the aircraft floats .

The collection for money in the General Defense Association received the Navy flygväsende funds to procure five heavy and four light reconnaissance aircraft. The Navy requested flygväsende 1915 tenders from AETA and Södertelge Werkstäder on both typerna.På because of the First World War and the rapid progress made ​​the Navy flygväsende became cautious with an order. Finally, in January 1916 it was decided to order four SAF H 2 and five Thulin Type G. Jul. 10, 1917 launched the first Type G in Landskrona for water samples. The following day was conducted the first flight tests. The water samples showed that the aircraft's maneuverability on the water was bad, and they had to redesign the floats. The aircraft were delivered until November 1917, and was placed in Karlskrona , Vaxholm , Landskrona , Hägernäs and Gothenburg , where they attended the neutrality Guard and maritime surveillance. Aircraft No. 11 and No. 12 overall wrecked while No. 14 was completely destroyed by fire on Galärvarvet in August 1921 Aircraft No. 15 was submitted to the National Maritime Museum 1934 deposited aircraft at the Technical Museum in Stockholm. The aircraft was later transferred to the Air Force Museum's collections.