NAVYPEDIA

Ships

Names	Builders	Commissioned	Losses	Transfers	Discarding
第411号魚雷艇 - 第450号魚雷艇 [411-go - 450-go] 第470号魚雷艇 - 第473号魚雷艇 [470-go - 473-go]	Sasebo K K: 411-450-go, 470-473-go	1943 - 1945: 411-450-go, 470-473-go	at least 416-go (7 - 9.1944), 428-go (1944)	none	after 8.1945: some from 411 - 415-go, 417 - 427-go, 429 - 450-go, 470 - 473-go

Technical data

Displacement standard, t	20
Displacement full, t	24
Length, m	18.0
Breadth, m	4.30
Draught, m	0.65 - 0.74
No of shafts	2
Machinery	2 Kotobuki 3-shiki petrol engines (air-cooled)
Power, h. p.	800
Max speed, kts	21.5
Fuel, t	petrol
Endurance, nm(kts)	300(21)
Armament	1 x 1 - 25/60 96-shiki, 2 - 450 TT
Complement	7

Project history

Development of B type (Otsu-Gata) T1. They differed each other by as a hull material (steel on Т23, Т31, Т32, Т33 and Т37 series or wooden on Т25, Т34, Т35, Т36, Т38 and Т39 series), and type and number of engines. Shortage of the latter has compelled to fit 238 boats with low-power (450hp) petrol engines. Since Т31 series boats did not had cruising engines.

Modernizations

None.

Naval service

No significant events