NAVYPEDIA

Photo

X3 1918  

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
X2			Ansaldo, Sestri Ponente	8.1916	25.4.1917	2.1918	laid up 9.1940
X3			Ansaldo, Sestri Ponente	8.1916	29.12.1917	8.1918	laid up 9.1940

Technical data

Displacement standard, t	394
Displacement normal, t	403 / 468
Length, m	42.6
Breadth, m	5.52
Draught, m	3.15
No of shafts	2
Machinery	2 Sulzer diesels / 2 Ansaldo electric motors
Power, h. p.	650 / 325
Max speed, kts	8.2 / 6.3
Fuel, t	diesel oil
Endurance, nm(kts)	1200(8) / 70(3)
Armament	1  x 1 - 76/30 A1914, 18 mines
Complement	22 - 25
Diving depth operational, m	40

Standard scale images

Graphics

Project history

Small submarine minelayers, designed on the sample of trophy Austro-Hungarian submarine U24 (ex-German UC12). Saddle-tank hull. The "German" scheme of minelaying: nine vertical trunks on two mines each. Unsuccessful boats, too slow and badly controlled.

Modernizations

early 1920s, both: + 2 - 450 TT (bow, 2)

Naval service

Since 1936 both were used for training. In September, 1940 both submarines were disarmed and converted to hulks.