Chapter 8 - Controlled Mines; The RM Mine: RHM Used as an Controlled MineChapter 8 - Controlled Mines; Table of Influence Mines
GERMAN UNDERWATERS ORDNANCE MINES
Chapter 8 - CONTROLLED MINES
Table of Influence Mines
Designation
Stage of
Development
Type
Method of
Laying
Possible
Units
Wt. of
Charge
Case
Material
Dimensions
Shape
Total Wt.
in Air
Bomb
Fuze
Type
Clock
Case
Min.
Depths
Max.
Remarks
Diam.
Length

BMA I

Operational

Ground

Aircraft

J 1

1,425 lb.

Steel

26"

69"

Bomb

2,200 lb.

--

--

--

120

Abandoned in early stage of war after a few had been laid.

BMA II

Operational

Ground

Aircraft or
surface

J 1

1,425 lb.

Steel

26"

69"

Bomb

2,200 lb.

--

--

--

120

Abandoned in early stage of war after a few had been laid.

BMA III

Abandoned

Ground

Aircraft or
surface

J 1

1,425 lb.

Steel

26"

69"

Bomb

2,200 lb.

--

--

--

120

Abandoned in developmental stage.

BM 1000 I

Operational

Ground

Aircraft

M 101 - A 104
M 103 - A 105
A 107 - AD 104

1,500 lb

Manganese
steel

26"

64"

Bomb

1,920 lb.

157/3
56

80-hr.

24

120

Earliest of the Luftwaffe's bomb-mine series.

BM 1000 II

Operational

Ground

Aircraft

M 101 - A 104
M 103 - A 105
A 107 - AD 104

1,500 lb.

Manganese
steel

26"

64"

Bomb

1,920 lb.

157/3
56

80-hr.

23

120

Identical to BM 1000 I except that unit housing studs were
altered to provide greater strength.

BM 1000 F

Completed but
not used opera-
tionally

Ground

Aircraft

S 101

660 lb.

Manganese
steel

26"

64"

Bomb

1,200 lb.

17 A

72 hr.

2

6

Identical to BM 1000 I except that a transverse channel with
water flap and housing for S 101 unit were added.

BM 1000 L

Idea stage only

Drifting

Aircraft

A 107

660 lb.

Manganese
steel

26"

64"

Bomb

1,080 lb.

 

 

5

10

It was contemplated that this mine would utilize a BM 1000
mine case with a special dome and float

BM 1000 H

Operational

Ground

Aircraft

MA 101 - DA 132
MA 102 - DA 142
DA 102 - DA 152
DA 112 - DA 162
AA 106 - MA 105
AE 101 - MDA 106

1,500 lb.

Manganese
steel

26"

64"

Bomb

1,950 lb.

157/3
56

80-hr.

24

120

Same as BM 1000 I except that unit port enlarged to permit
housing of larger sized units.

BM 1000 M

Operational

Ground

Aircraft

MA 101 - DA 132
MA 102 - DA 142
DA 102 - DA 152
DA 112 - DA 162
AA 106 - MA 105
AE 101 - MDA 106

1,500 lb.

Manganese
steel

26"

64"

Bomb

1,950 lb.

157/3
56

80-hr.

24

120

Same as BM 1000 H except for height of suspension lug and
conduit leading from fuze rocket to nose.

Designation
Stage of
Development
Type
Method of
Laying
Possible
Units
Wt. of
Charge
Case
Material
Dimensions
Shape
Total Wt.
in Air
Bomb
Fuze
Type
Clock
Case
Min.
Depths
Max.
Remarks
Diam.
Length

BM 1000 J I

Completed but
not used opera-
tionally

Ground

Aircraft

JDA 105

1,500 lb.

Steel

26"

66"

Bomb

1,950 lb.

157/3
56

80-hr.

24

120

First Luftwaffe induction mine. Used one coil rod with nickel
core and copper winding.

BM 1000 J II

Completed but
not used opera-
tionally

Ground

Aircraft

JDA 105

1,500 lb.

Steel

26"

66"

Bomb

1,950 lb.

157/3
56

80-hr.

24

120

Same as BM 1000 J I except for amout of NI and substitution
of AL windings for CU.

BM 1000 J III

Completed but
not used opera-
tionally

Ground

Aircraft

AJ 102

1,500 lb.

Steel

26"

66"

Bomb

1,950 lb.

157/3
56

80-hr.

24

120

Coil same as that of BM 1000 J II but with winding of higher
resistance

BM 1000 T

Abandoned

Moored

Aircraft

A 107

880 lb.

Steel

26"

66"

Bomb

2,420 lb.

157/3
56

80-hr.

 

 

First attempt to develop a Luftwaffe moored bomb-mine

Winterballoon

Completed but
not used opera-
tionally

Drifting

Aircraft

17 B Fuze
pre-set

660 lb.

Steel

26"

64"

Bomb

1,200 lb.

 

72-hr.

5

10

Designed as an anti-power plant mine for use in winter
time. It uses a modified BM 1000 L case fitted with an
anti-ricochet plate for penetrating ice as well as a rubber
bag and CO2 bottle in the tail to allow it to float under ice.

BM 500

Early devel-
opment

Ground

Aircraft

DA 102 Series

660 lb.

Steel

18"

57"

Bomb

1,100 lb.

56

--

--

--

Never progressed beyond experimentation.

BM 250

Early devel-
opment

Ground

Aircraft

D 103 Series

265 lb.

Steel

15"

42"

Bomb

550 lb.

56

--

--

--

In experiment for use in rivers.

Wasserballoon

Operational

Drifting

Aircraft

S 102, S 103

88 lb.

Steel

15"

41"

Bomb

550 lb.

--

--

--

--

Intended for use against river bridges.

EMF

Operational

Moored

Surface

M 3, A 7, M4
AE 1

750 lb.

KSS

45"

50"

Sphere

2,450 lb.

--

UES II
UES II a
ZE I
EW

15

20

First of the German surface-laid, moored, influence mines.

Designation
Stage of
Development
Type
Method of
Laying
Possible
Units
Wt. of
Charge
Case
Material
Dimensions
Shape
Total Wt.
in Air
Bomb
Fuze
Type
Clock
Case
Min.
Depths
Max.
Remarks
Diam.
Length

EMH

Abandoned

Moored

Surface

Acoustic

750 lb.

Steel

45"

50"

Sphere

--

--

--

--

--

To be same as EMF except that case was to be of steel.

EMI

Abandoned

Moored

Surface

Induction

Unknown

Steel

46"

48½"

Sphere

--

--

--

--

--

Was to utilize EMC case modified for induction unit.

EMK

Development

Moored

Surface

A 7, AE 1

660 lb.

Steel

45"

50"

Oval

--

--

--

--

--

Could be used as influence and/or contact mine.

EMU

Development

Moored

Surface

A 7, AE 1

220 lb.

Steel

45"

50"

Oval

--

--

--

--

--

Could be used as influence and/or contact mine.

HMB

Completed but
not used opera-
tionally

Ground

Surface

M 1, A 2
MA 2/3
AT 3

1,760 lb.

KSS

45"

56"

Cylin-
drical

2,200

--

UES II,
UES IIa
ZE

15

120

To be laid by specically designed Hecht midget sub.

KMB

Operational

Ground

Surface

M 1

220 or
440 lb.

Concrete
and wood

42"

32"

Cylin-
drical

1,760 or
1,980 lb.

--

UES II

 

100

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

LMA I/II/III

Operational

Ground

Aircraft

M 1, M 1r, M 1a
M 3, M 4, A 1,
A 4, MA 1/2/3,
MA 1a/1r/1ar,
AT 1/2, AMT 2,
DM 1

660 lb.

KSS

26"

81½"

Cylin-
drical

1,100 lb.

34A
34A*
34B

UES II
UES IIa
ZK, VW

15

120

The three models differed very slightly in manner of con-
struction and change in parachute assembly.

LMA/S

Operational

Ground

Surface

Same as LMA I

660 lb.

KSS

26"

52"

Cylin-
drical

1,100 lb.

--

Same as
LMA I

15

120

Bomb fuze eliminated and tail changed to permit laying by
E-boat.

Chapter 8 - Controlled Mines; The RM Mine: RHM Used as an Controlled MineChapter 8 - Controlled Mines; Table of Influence Mines