Japanese 35,000 tons 30 knots speed battleship design No. A by Yasushi Taji in 1919

Ise-class. ©Warshipsresearch.blogspot.com

38,000 tons 30 knots 5x2-15" guns design. ©Warshipsresearch.blogspot.com

Nagato-class. ©Warshipsresearch.blogspot.com

Full load displacement 35,000 tons. Speed 30 knots. Horsepower for deep condition 115,000 shp. Dimensions 729 (between perpendiculars)-765 (on deep water line) x 93 x 33 feet. Weight armament 4,540 tons. Weight protection 6,810 tons. Total weight armament and protection 11,350 tons. Armament 2x2&2x3-15”guns, 16-4” guns, 2-21” torpedo tubes. Protection consisted of: waterline belt 5” (maximum)-4” (intermediate)-3” (fore and after). Upper armour 4”. Battery armour 3”. Barbette armour 9”. Conning tower 10”. Protective deck 1”. F'esk or upper deck 1”. Underwater protection 1”.

The Ise-class preceded by Fuso-class succeeded by Nagato-class, built between 1915-1918 had a normal displacement of 1,762 tons , dimensions 683 x 94 x 29.4 feet, main armament of 6x2-35,56cm/14” guns, horsepower 40,000-45,000 shp and a speed of 23 knots.

The Nagato-class preceded by Ise-class succeeded by planned Tosa-class built, between 1917-1921 had a displacement of 32,720 (standard)-39,116 (full load) tons, dimensions 708 (over all) x 95.3 x 29.9 feet, horsepower 80,000 ship and speed26.5 knots.

Source

Hiraga Archives. An article titeld “The mutual influence of speed, armament, and protection on the battleship design”, written by Constructor-Lieutenant Yasushi Taji, 1929