NAVYPEDIA

Ships

Names	Builders	Commissioned	Losses	Transfers	Discarding
L21, 12.1917- LM21, 1926- UZ(S)21; LM22, 1926- UZ(S)14; LM23, 1926- UZ(S)15; LM24 - 26	Lürssen, Vegesack: L21, LM22-26	1917: L21 1919: LM22, 23	BU incomplete: LM24 - 26	Columbia 9.1933: UZ(S)15 (A)	3.1931: UZ(S)14 6.1933: UZ(S)21

Technical data

Displacement normal, t	7
Displacement full, t
Length, m	16.0
Breadth, m	2.40
Draught, m	0.68
No of shafts	3
Machinery	3 Maybach HS petrol engines
Power, h. p.	720
Max speed, kts	31.8
Fuel, t	petrol 1200 l
Endurance, nm(kts)
Armament	L21: 1 x 1 - 20/60 Madsen LM22, 23: 1 x 1 - 7.9/79
Complement	7

Standard scale images

Project history

All boats had aircraft motors. Unlike British boats the German have been armed by one fixed bow TT instead of stern cradles. LM-type boats were used for coast defence, 14 were based on Belgium coast and 7 on Baltic.

Modernizations

1918, LM21: + 1 - 450 TT

1926, UZ(S)14, 15: engines were replaced by 3 Mercedes-Benz (780hp)

Naval service

LM21 was converted to dispatch boat Siegfried in 1921 and latter two boats were sold (they were never commissioned) but all three were reverted to the navy in 1926 as ASW boats.