This is a suggestion of a Swedish ship tree. It is also an example of a minor nation’s ship tree.
In order for more nations to be included, and to avoid ‘paper ships’, I propose that a joint ship tree of different classes is utilized for minor nations. Furthermore, I envisage the ship tree to end at tier IX since a minor nation is unlikely to commission a Yamato-like ‘monster-ship’ at tier X (Edit: moved Halland to tier X, added Östergötland as tier IX).
Regarding the Swedish ships the ship tree portrays the early- to mid-tier focus on cruisers and the later focus on destroyers. Every ship in the tree is real. Most had remarkable long periods of service (30 plus years). In general, Swedish warships should be specialized in defence and camouflage: low visibility and very good anti-air artillery.
Tier I: Clas Fleming. Commissioned 1914, reconstructed 1940. Data (1940): 4-120 mm, 20 kn, 1,850 ton. This small Swedish ‘mine-laying cruiser’ which would fit tier I rather well.
Tier II: Fylgia. Cruiser. Commissioned 1907. Data (1907): 8-152 mm, 14-57 mm (secondaries), 22 kn, 4,310 ton. Sweden´s only ‘armoured cruiser’. In service for 50 years (reconstructed 1939-41).
Tier III: Wrangel. Destroyer. Commissioned 1918. Data (1918): 4-75mm, 6-TT, 34 kn. 498 ton. One of only two Swedish destroyers built during ww1.
Tier IV: Drottning Victoria. Cruiser. Commissioned 1921. Data (1941): 4-283 mm (3 RPM), 6-152 mm (secondaries), 4-75 mm AA, 9-40 mm AA, 4-25 mm AA, 23,2 kn, 7,663 ton. One of three large ‘pansarskepp’ built. The design can be considered similar to the later German ‘armoured ship’ Graf Spee. Hence they are cruisers and not battleships. The three ships were symbols of Swedish naval power and ‘defence willpower’ in the early 20th Century.
Tier V: Gotland. Cruiser. Commissioned 1934. Rebuild 1943. Data (1944): 6-152 mm (5 RPM), 6-TT, 4-75 mm AAA, 8-40 mm AA, 6-25 mm AA, 3-20 mm AA. 27,5 kn, 5,550 ton. An aircraft-carrying (8) scout-cruiser later rebuild as an anti-aircraft cruiser. Should carry the consumable defensive AA-fire and have significant low visibility. Well-known for spotting Bismarck in May 1941.
Tier VI: Tre Kronor. Cruiser. Commissioned 1947. Data (1947): 7-152 mm (10 RPM), 6-TT, 20-40 mm AA, 9-20 mm AA, 33kn, 9,200 ton. The last Swedish cruiser together with her sister Göta Lejon.
Tier VII: Göta Lejon. Cruiser. Commissioned 1947. Data (1958): 7-152 mm (10 RPM), 4-57 mm (secondaries), 6-TT, 17-40 mm AA, 33 kn, 9,200 ton. The last Swedish cruiser. Sold to Chile in 1970. Should be superior to her tier VI sister due to later modifications (fire control, improved AA-guns). Should get the radar-consumable.
Tier VIII: Uppland. Destroyer. Commissioned 1947. 4-120 mm (20 RPM), 6-TT, 7-40 mm AA, 8-20 mm AA, 35kn, 2,250 ton. A significant improvement over previous Swedish destroyers.
Tier IX: Östergötland. Destroyer. Commissioned 1958. 4-120 mm (20 RPM), 6-TT, 7-40 mm AA, 35 kn, 2,600 ton. The last destroyer class in Sweden. However, it was essential a refined version of Uppland (Öland-class) with better maneuverability and protection.
Tier X: Halland. Destroyer. Commissioned 1955. 4-120 mm (42 RPM), 8-TT, 2-57 mm (secondaries), 6-40 mm AA, 35 kn, 3,400 ton. The last and largest Swedish destroyer designed to replace cruisers as flotilla leader. Her sister ship Småland is preserved as a museum ship in Gothenburg.