NAVYPEDIA

Photo

X1 1925

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
XI			Chatham DYd	11/1921	16.6.1923	9/1925	BU 12.1936

Technical data

Max speed, kts, kn	19.5 / 8
Displacement standard, t	2425
Displacement normal, t	2780 / 3600
Length, m	110.8
Breadth, m	9.09
Draught, m	4.80
No of shafts	2
Machinery	2 Admiralty diesels + 2 diesels from German submarine U126 / 2 electric motors
Power, h. p.	6000 + 2000 = 7000 only / 2400
Fuel, t	diesel oil 452
Armament	2 x 2 - 132/42 QF Mk I, 6 - 533 TT (bow, 12)
Electronic equipment	type 113 sonar
Complement	110
Diving depth operational, m	60

Graphics

Project history

Submarine had double-hulled construction at nearly full length, maximal diving depth was 110m. Fuel was stowed mostly in external riveted tanks, only 40.5t was stowed in pressure hull. 2 1200hp diesels from German submarine U126 driven battery-charging generators, these generators may also drive the motors directly achieving 1000hp each. So total surface power could be 8000hp but auxiliary diesels may give only half of their maximal power on maximal propeller shaft revolutions and 1000hp were lost.

Modernizations

None.

Naval service

Submarine was laid up in December 1933 owing to severe machinery troubles.