LMA/P

Ready for
operation

Ground

Aircraft

Same as LMA I

660 lb.

Pressed
paper

26"

52"

Cylin-
drical

1,100 lb.

Same as
LMA I

Same as
LMA I

15

120

A number of these mines were made but it is not known
whether they wered used. This type was a hedge against a
possible aluminum shortage and intended to lower the
expense entailed in AL cases.

LMB I/II/III

Operational

Ground

Aircraft

Same as LMA I

1,500 lb.

KSS

26"

117½"

Cylin-
drical

2,175 lb.

Same as
LMA I

UES II
UES IIa
ZK, VW
ZE III

15

120

Succeeded the LMA and was used more extensively becauce of
its larger charge.

LMB/P

Ready for
operation

Ground

Aircraft

Same as LMA I

1,500 lb.

Pressed
paper

26"

117½"

Cylin-
drical

2,175 lb.

Same as
LMA I

UES II
UES IIa
ZK, VW
ZE III

15

120

Developed for same reasons as LMA/P.

LMB/S

Operational

Ground

Surface

Same as LMA I

1,500 lb.

KSS

26"

88"

Cylin-
drical

2,175 lb.

--

UES II
UES IIa
ZK, VW,
ZE III

15

120

Same charge as for LMA/S

LMF

Operational

Moored

Aircraft

M 3, M 4, M 2,
A 7, AE 1

610 lb.

KSS

26"

92"

Torpedo-
shaped

2,300 lb.

--

UES IIa
ZK, EW

54

120

First aircraft-laid, moored, influence mine. Case plants
horizontally.

LMF/S

Operational

Moored

Surface

M 3, M 4, M 2,
A 7, AE 1

610 lb.

KSS

26"

92"

Torpedo-
shaped

2,300 lb.

--

UES IIa
ZK, EW

54

120

This model is the same as LMF except that the parachute is
removed so that the mine may be laid by E-boat.

MTA

Operational

Ground

Submarine

M 1

1,000

KSS

21"

23"

Torpedo-
shaped

3,600 lb.

--

ZE III

120

Normal G 7e torpedo with special head fitted in place of
warhead. Range 7,000 meters, speed 18 kts.

RMA

Operational

Ground

Surface

M 1

1,750 lb.

KSS

50"

39"

Hemi-
spher-
ical

2,350 lb.

--

UES II
UES IIa
ZK VW

15

120

This was the earliest of the German influence mine cases.
Also adaptable for use as controlled mine.

RMB

Operational

Ground

Surface

M 1

1,000 lb.

KSS

37"

20"

Hemi-
spher-
ical

1,600 lb.

--

UES II
UES IIa
ZK, VW

15

120

Smaller version of RMA.

RMD

Ready for
operation

Ground

Surface

Same as LMB

750 lb.

KSS,
plastic,
concrete

32"

50"

Hemi-
cylin-
drical
with
flat
sides

1,500 lb.

--

UES II
UES IIa
ZK, VW

15

120

Developed for use as an influence and/or controlled mine.

RME

Ready for
operation

Ground

Surface

M 1

88 lb.

Wood or
pressed
paper

20 x 19 x 17"

Cube

286 lb.

--

UES II

15

60

Developed for use in rivers.

RMH

Operational

Ground

Surface

M 1

2,000 lb.

Wood

46 x 41 x 38"

Cube

2,300 lb.

--

UES II
UES IIa
ZK, VW

15

120

Earliest of the German influence mines. Also adaptable for
use as controlled mine.

SMA

Operational

Moored

Submarine

M 3, A 7
M 4, AE 1

750 lb.

KSS

46"

56"

Sphere

3,475 lb.

--

UES II
UES IIa
ZE, EW

15

120

Very similar to the ??? mine except for type anchor used.
Laid from specially built minelaying subs fitted with
vertical shafts.

SMB

Early devel-
opment

Moored

Submarine

A 7, AE 1

Unknown

Steel

46"

80"
(approx.)

Oval

--

Intended for use in depths up to 9,000 feet - primarily in
American waters.

SMC

Ready for
operation

Moored

Submarine

M 3, A 7
M 4, AE 1

750 lb.

KSS

46"

50"

Sphere

3,475 lb.

--

UES II
UES IIa
ZE, EW

15

120

Same as SMA except that doughnut in anchor and 60-day
delay-rising clock substituted.

TMA

Operational

Moored

Submarine

M 2, M 3
M 4, A /

475 lb.

KSS

21"

111"

Cylin-
drical

1,760 lb.

--

UES II
UES IIa

50

120

Laid from torpedo tubes of submarines. This mine was not
used widely because the M 2 unit which was designed for it
proved unsatisfactory.

TMB I/II

Operational

Ground

Submarine

M 1, A 2
AT 3

1,230 lb.

KSS

21"

92"

Cylin-
drical

1,625 lb.

--

UES II
UES IIa
ZE I/III

15

120

Same method of laying as TMA. Models I and II differ only
in method of construction unit compartment.

TMB III

Operational

Ground

Submarine

M 1, A 2,
AT 3, DM 1
MA 2/3

925 lb.

KSS

21"

92"

Cylin-
drical

--

UES II
UES IIa
ZE I/III

15

120

Differs from Models I and II only in size of unit compartment.

TMB (S)

Operational

Ground

Surface

M 1, A 2,
AT 3, DM 1
MA 2/3

1,230 lb.

KSS

21"

103"

Cylin-
drical

--

UES II
UES IIa
ZE I/III

15

120

Altered for laying by E-boat.

TMB (KTMB)

Operational

Sabotage

Swimmers

M 1, A 2,
AT 3, DM 1
MA 2/3

1,230 lb.

KSS

21"

172"

Cylin-
drical

--

UES II
UES IIa
ZE I/III

15

120

This mine utilized either the Model II or the Model III case
and two floats - one fore and one aft - to enbale swimmers
to plant the mine in the desired position. Firing was
usually by delay clock, but influence units could be utilized.

TMC I

Operational

Ground

Submarine

M 1, A 2, AT 3

2,050 lb.

KSS

21"

133"

Cylin-
drical

--

UES II
UES IIa
ZE I/III

15

120

A larger version of the TMB

TMC II

Operational

Ground

Submarine

M 1, A 2,
AT 3, DM 1
MA 2/3

1,760 lb.

KSS

21"

133"

Cylin-
drical

--

UES II
UES IIa
ZE I/III

15

120

Differs from TMC I in size of unit compartment.