Pioneer Japanese warship Kotaka, world's largest TB when built and said to be the first true TBD. Designed in Japan, she was built in sections in Britain and assembled at the Yokosuka Naval Arsenal on arrival in Japan, commissioning in 1888. Photo is dated 1889. Specifications for the Kotaka:
Dimensions: 165' x 19' x 5'7"; (4) 1½" QF guns, (6) 14" TT. Propulsion: (2) coal-fired boilers, triple expansion engine developing 1,400 ihp, shafted to single screw. Speed: 19 kts.
Metric: 50.3m x 5.8m x 1.7m; (4) 37 mm QF guns, (6) 36 cm TT. Propulsion: (2) coal-fired boilers, triple expansion engine developing 1,044 kW, shafted to single screw. Speed: 35.2 km/hr
