Marinens Flygväsende

c200 seaplanes or land-based naval aircraft

General Context: Sweden from 1900 to 1918

Sweden's Maritime Challenges

As a Nordic country located on the Scandinavian Peninsula in Northern Europe, its geography strongly shapes its economy, security, and maritime strategy: Sweden has a long coastline, for over 3,000 km along the Baltic Sea and Gulf of Bothnia. It has thousands of islands surround cities like Stockholm and Gothenburg, creating both defensive advantages and navigational complexity. It has also the borthern Arctic connection through Lapland and access to the Barents/Nordic area. Major islands such as Gotland and Öland are strategically important in the Baltic Sea. It also has dense forests and lakes, an inland terrain limiting easy east-west transport corridors and favouring seaplanes (like in Canada). Its cold climate means seasonal ice affecting northern ports and shipping routes.

Sweden depends heavily on maritime trade because much of its imports and exports move through Baltic shipping lanes. The Baltic Sea is effectively Sweden’s economic lifeline. Danish Straits linking the Baltic to the North Sea, Gulf of Finland routes, Arctic and North Atlantic access, Baltic energy and communication infrastructures. The Baltic Sea is geographically narrow, shallow, and crowded, making maritime operations difficult. For the Swedish Navy and its air branch, this means the protection of shipping lanes, monitoring Russian naval activity, and the risk of blockades in narrow chokepoints. The Baltic Sea itself creates operational challenges with its shallow waters, Low salinity (“brackish” water), seasonal sea ice and dense island networks, narrow navigation channels. All this favored the air assets, provided the weather was mild.

Sweden's Geopolitical History 1900-1918

Between 1900 and 1918, Sweden experienced a major geopolitical transition. It moved from being a cautious regional power with memories of empire toward a neutral industrial state trying to avoid entanglement in European great-power conflict. This period was shaped by: The dissolution of the union with Norway Rising nationalism across Europe Industrialization Competition among Germany, Russia, and Britain World War I 1. Sweden at the Start of the 20th Century At the beginning of the 1900s, Sweden was no longer a great power, but memories of the Swedish Empire still influenced political thinking. Important background: Sweden had lost Finland to Russia in 1809. It had adopted a long-term policy of neutrality during the 19th century. The country remained tied economically and culturally to Germany. Russia was viewed as the primary strategic threat. Sweden’s geopolitical concerns centered on: Baltic Sea security Russian expansion Scandinavian stability Protection of trade routes Industrialization accelerated rapidly during this era, especially in: Steel Timber Engineering Shipbuilding This economic growth increased Sweden’s strategic importance in Northern Europe. 2. The Dissolution of the Sweden–Norway Union (1905) 7 One of the most important geopolitical events was the peaceful breakup of the union between Sweden and Norway in 1905. The union had existed since 1814, but Norwegian nationalism steadily increased during the late 19th century. Key developments: Norway demanded greater independence in foreign affairs. Political negotiations failed. Norway declared dissolution of the union in 1905. Sweden mobilized militarily but ultimately accepted separation peacefully. King Oscar II accepted the settlement to avoid war. Why this mattered geopolitically: It prevented conflict in Scandinavia. It strengthened the idea of Nordic peaceful diplomacy. Sweden lost direct influence over Norway’s Atlantic coastline. Scandinavian cooperation became more voluntary rather than imperial. The peaceful resolution became internationally significant because Europe at the time was increasingly militarized. 3. Sweden and the Great Power Rivalries Germany 6 Before World War I, many Swedish elites admired the German Empire. Connections included: Strong trade ties Cultural and academic links Military influence Shared concern about Russia German military organization strongly influenced Swedish officers and defense planning. However, Sweden avoided formal alliances. Russia The Russian Empire remained Sweden’s primary security concern. Reasons included: Russia controlled Finland after 1809. Russian naval expansion in the Baltic worried Sweden. Russification policies in Finland alarmed Swedish opinion. Fear existed that Russia might dominate Scandinavia. Swedish geopolitics during this period often revolved around maintaining balance against Russian influence. Britain United Kingdom was important mainly as: A naval power A trade partner A guarantor of Baltic maritime balance Britain’s naval dominance indirectly protected Scandinavian trade routes. Sweden tried to maintain good relations with Britain while avoiding commitments against Germany. 4. Defense Debates and Internal Politics 4 Sweden experienced intense internal debates over defense policy. Two major camps emerged: Conservatives Wanted stronger military spending Feared Russia Favored closer orientation toward Germany Liberals and Social Democrats Preferred social reform over militarization Supported neutrality Worried about aristocratic military influence A famous political crisis occurred in 1914: Conservative groups organized the “Peasant Armament March.” King Gustaf V publicly supported stronger defense spending. This triggered a constitutional conflict over royal political power. The crisis showed how international tensions were affecting domestic Swedish politics. 5. Sweden During World War I (1914–1918) 4 When World War I began, Sweden declared neutrality. However, neutrality was complicated. Swedish Position Sweden officially stayed out of the war, but: Many elites sympathized with Germany. Trade relations pulled Sweden in multiple directions. Britain controlled sea access through naval blockade systems. Germany dominated parts of Baltic trade. Sweden had to navigate pressure from both sides. Maritime and Economic Challenges The war created major problems: Shipping disruptions Food shortages Inflation Trade restrictions Naval mine dangers in the Baltic Sea Swedish merchant shipping became increasingly risky due to submarine warfare and blockades. Relations with Germany Some Swedish leaders considered closer cooperation with Germany, especially against Russia. But Sweden ultimately avoided entering the war because: The military was not fully prepared. Public opinion was divided. Leaders feared economic collapse. Neutrality benefited trade and survival. 6. The Russian Revolution and the Finnish Question (1917–1918) 4 The collapse of the Russian Empire dramatically changed Sweden’s geopolitical environment. Major consequences: Finland declared independence in 1917. Civil war erupted in Finland in 1918. Sweden worried about revolutionary instability spreading northward. Sweden provided limited support to Finnish White forces but avoided direct large-scale intervention. Finland’s independence had enormous strategic significance: Russia was pushed farther from Sweden’s borders. A new buffer state emerged across the Baltic. Scandinavian geopolitics entered a new era. 7. Sweden by 1918 By the end of World War I, Sweden had: Preserved neutrality Avoided military devastation Strengthened industrial capacity Experienced democratic reforms Become more cautious about great-power politics The war reinforced several long-term Swedish geopolitical principles: Armed neutrality Strong coastal defense Baltic strategic awareness Avoidance of binding alliances Economic pragmatism

Swedish Naval Aviation 1914-1918

From Ballooning to Aviation

The beginnings were, like for nother nations in lighter than air with a number of military balloons built. The first initiative was from a civilian explorer; On July 11, 1897, the gas balloon “Örnen” takes off from Danskön, Spitsbergen, with Salomon August Andrée. It was never found again. But the army was soon interested.

The Fästningsballong (1898) was the first Swedish military aircraft, working for the Army. Then came the first class of ballons, the army and navy Drakballong m/09 with five built in 1909, derived from the German Parseval-Sigsfeld Drachenballon also dubbed the "flying sausage". In 1909, Sweden would purchase five Drachenballons from Germany to use for their military. The type would be named the Drakballong m/09, with three going to the Royal Swedish Army and two going to the Royal Swedish Navy. Two m/09s would be sent to the Swedish Balloon Corp stationed in Frosunda for training.

The Swedish Royal Navy would purchase a barge from Britain and convert it into a balloon carrier. The ship would be designed to house and operate the two m/09s the navy operated and was named Ballongfartyget No 1. Sweden would continue to use the m/09 until 1926. This was the very first naval air asset of Sweden. It served in WW1 as well.

Also in parallel, was built the "Kronan" in 1909, or Kulballong m/09, named after the company that built them, but also the flagship of the Swedish Navy in the Baltic Sea in the 1670s. These were two spherical balloons used by the Coastal Artillery (KA 1) in Vaxholm, so the Navy, with a capacity of 650 m3 hydrogen gas. The army meanwhuile used the single Drakballong typ Ä named after its designer, the French Army Captain, Albert Caquot ad an improvement of the older Parseval-Sigsfeld Drachenballon, manufactured in Germany and purchased in 1921, used by the Army's Balloon Company at Frösunda. It had a volume of about 800 m3. More types were used in the interwar (see later).

Swedish Early Naval Aviation

The Navy, sooon understood the advantages of the aeroplane for reconnaissance at sea over the few ballons that were operated from 1909. An aircraft was completely independent of the wind and could span great areas, delivering reports to bases or ships in short short time. So the Swedish Navy got its first aircraft in December 1911, a few months before the Army, amazingly. This was however a donation, only use to demonstrate its usefulness. Politicians completely ignored naval aviation, and so the development of this embryonic corps depended on further donations from individuals and organizations. In 1913 at last, a special Aviation Corps called the ”Marinens Flygväsende (MFV) was founded in Stockholm, assorted by a flying school established at the Fortress of Oscar-Fredriksborg, then at Hårsfjärden naval base. These were all French models, Bleriot land-based model, as well Nieuport and Donnet-Leveque seaplanes.

As the first world war started, this soon became a challenge for the MFV which had to enforce Swedish Neutrality over many hundred mile sof coastline with just a few aircraft to its disposal. Pilots had no experience in flying in bad weather or winter, airframes were fragile and needed frequent repairs. Still aircrews and the ground personnel managed to keep these in constant, rotating neutrality guard. Merchant ships were flew over to ensure their remained safe, others looked for for mines and foreign warships that might encroach on Sweden's own waters. When it happened, these aeroplanes needed to daringly impose their will by signalling and aggressive manoeuvers, and force them to leave Swedish waters. Swedish Naval aviators never fired any weapons at anger all these time, even so they were all unarmed, but using personal pistols or flare pistols.

Swedish WWI Naval Aircraft

https://www.avrosys.nu/aircraft/MFV/IndexMFV.htm The full list included the Fältballong m/23, Kulballong m/23 and Fältballong 1926, as well as the Nyrop 2 (Bleriot XI) (N:r 1) 1 1911–1913, 1916, Nieuport IV.M 1 1913–1918 Donnet-Leveque 2 1913–1918, Farman HF.23 (2) in 1913–1917 and SW 11 (Farman HF 23), 7 purchased and used 1914–1920, before or early in the war and later the Thulin B (2) 1915–1917, the TDS Farman HF 23 (2) in 1917–1920, the Thulin G (5) in 1917–1922 and the SW 17 (SAF H-2, 4 made that never entered service.

General Context: Sweden from 1919 to 1939

Interwar Swedish Naval Aviation

Thulin GA 2 1919–1921 Friedrichshafen FF.33L 2 1918–1920 Friedrichshafen FF.33E 3 1918–1929 Friedrichshafen FF.49C 2 1919–1924 Sablatnig FF.49C 2 1919–1926 TDS Friedrichshafen FF.33 5 1921–1929 Macchi M.8 1 1919–1922 Savoia S.13 4 1919–1924 Supermarine Channel II 1 1921–1922 Fairey IIID 1 1924–1925 Caspar S.I (Heinkel HE 1) 4 1921–1929 Heinkel HE 1 8 1923–1929 Heinkel S.II 5 1924–1934 Heinkel HE 4 1 1926–1931 Heinkel HD 14 did not enter service Albatros B.IIa 5 1920–1929 Avro 504K 5 1924–1928 LVG C.VI 2 1921–1923 Heinkel HE 3 2 1925–1927

WW2 Swedish Naval Aviation

More balloons

Fältballong m/23 ”Alto-Basso”(Kite "field" balloon, model 1923) Kulballong m/23 (Spherical balloon, model 1923) Kulballong m/23 (Spherical balloon, model 1923) Fältballong m/30 och m/32 (Kite balloon, model 1930 and model 1932 for the Swedish artillery) Fältballong m/30 och m/32 (Kite balloon, model 1930 and model 1932) Kulballong m/30 (Spherical balloon, model 1930 for the Swedish artillery troops) Kulballong m/30 (Spherical balloon, model 1930) https://www.avrosys.nu/aircraft/Ballong/indexballong.htm

WW2 Models in Service

S5 (Heinkel He 5 ”Hansa” 1927-1945)

https://www.avrosys.nu/aircraft/Spaning/205S5.htm

Version for Sweden fitted with a 600 horsepower (450 kW) Swedish-built NOHAB Bristol Mercury radial piston engine and interchangeable wheel and float landing gear. Six built. Given the designation S 9 by the Swedish Air Force.[42][43] https://www.avrosys.nu/aircraft/Spaning/208s9/208S9.htm

T 3 (Junkers Ju 86K 1944-1947)

https://www.avrosys.nu/aircraft/Torped/193T3.htm

S12 (Heinkel He 114A 1941-1949)

https://www.avrosys.nu/aircraft/Spaning/209s12/209S12.htm

Saab B16A

T 1 (Heinkel HD 16 1928-1939)

https://www.avrosys.nu/aircraft/Torped/191T1.htm

T 2 (Heinkel He 115 1939-1952)

https://www.avrosys.nu/aircraft/Torped/192t2/192T2.htm

Saab B16A

https://en.wikipedia.org/wiki/Caproni_Ca.313: saab B16 torpedo bomber https://www.avrosys.nu/aircraft/Bomb/156-b16/156B16.htm Also technically the 1936 B3 (Ju 86K bomber) could be used for naval bombing, albeit they belonged to the Army. Same could be said from the 1944 B 18 to replace them and made by SAAB, as a later torpedo bomber version, T 18B, was ordered...

SAAB B17BS

Alongside the SAAB B17 dive bomber that was partly deployed in coastal bases to work in coordination with Navy fortifications, the Navy obtained the SAAB 17BS floatplane version. The SAAB 17 was related to the former ASJA L10, inspired in turn by the Northrop 8-A 1. This was the first SAAB model, a land-based dive bomber and multirole cantilever all-metal model, to make Sweden independent from imports. A floatplane version called SAAB 17 BS was decided upon in 1942 as a replacement for the 1926 Svenska Aero S 5, licence-made Heinkel HE 5. Like the 17 B version it was powered by a licenced NOHAB Pegasus XXIV rated for 980 hp. Performances were not stellar, and it needed extra stabilization, but it proved extremely robust and 38 were manufactured in 1943-44 for the needs of the Svenska Marinen, active with F 2 Hägernäs naval support unit, until 1948. It was not replaced.