Chapter 1: History
GERMAN UNDERWATERS ORDNANCE MINES
TABLE OF CONTENTS

Chapter 1 – History

Magnetic Units
Degaussing
Acoustic Units
Research after 1941
Pressure Units
Experimental Units

Optical

Cosmic Ray

Infra Red

Underwater Electrical Potential Gravitation

Gravitation

Wellensonde (Wave Probe)

Combined Units
Auxiliary Devices

Arming Clocks

Period Delay Mechanisms

Sterilizers

Pausenuhr

Twelve-Hour EW

Prevent-Stripping Mechanisms

Räumschutz

Naval Mine Cases

Contact Mines

Contact-Influence Mines

Anit-Asdic Research
Conclusion

Chapter 2 – German Mine Organization

Functions of Mine and Minesweeping Group (SVK)
Personnel of Mine and Minesweeping Group (SVK)
Facilities of Mine and Minesweeping (SVK)
Trials Group (SEK: Sperrwaffenerprobungskommando)
Functions of Test Station (E-Stelle)
Personnel of Test Station (E-Stelle)
Facilities of Test Station (E-Stelle)

Coordination between the Naval Mine and Minesweeping Group (SVK) and Luftwaffe Test Station (E-Stelle)

The Effect of Allied Bombing on the Mine Program
Organization Chart - SVK
Organization Chart - Luftwaffe

Chapter 3 – Critique

Critique
Technical Development

Chapter 4 – Contact and Moored Influence Mines

The German EM (Einheitsmine) Mine Series

The EMA Mine

The EMB Mine

The EMC I Mine

EMC I - EMC II - EMC II (Upper Antenna)

EMC II Mine

The EMD Mine

The EME Mine

The EMF Mine

The EMG Mine

The EMH Mine

The EMI Mine

The EMK and EMU Mine

The EMR and EMR/K Mines

The EMS Mine

The FM Mines

FMA Mine

FMB Mine

FMC Mine

The OMA Mine
The UM Mines

The UMA Mine

The UMB Mine

Base Plates
Table of Base Plates
Table of Contact Mines

Chapter 5 – Aircraft Mines – SVK

The LM Mines

The LMA Mine

The LMB Mine

The LMC Mine

The LMD Mine

LM - ZUS Z (34) B Bomb Fuze for LMB

Parachute for the LMA and LMB Mines

LMF Mine

Chapter 6 – Aircraft Mines – Luftwaffe

The BMC Mine
The BM Mine Series

BM 1000 I

BM 1000 II

BM 1000 C

BM 1000 H

BM 1000 J - J I - J II - J III

BM 1000 M

BM 1000 T

BM 500

BM 250

Bugspiegel (BS 1 and BS 2)

Bugverkleidung (BV 2 and BV 3)

Schutzhauben

SH 1 and 2

SH 8 and 9

SH 7

SH 11

Leitwerke (LW)
Assembly Plan for BM 1000 Mines
BM 1000 Parachutes

LS 1

LS 3

LFS-08

Special Accessories used with BM 1000

Rheinmetall Bomb Fuze - Type 157/3

Master Switch

Fuze Delay Switch

Chapter 7 – Submarine-Laid Mines

The SM Mines

The SMA Mine

The SMB Mine

The SMC Mine

The TM Mines

The TMA I Mine

The TMB Mine

The TMC Mine

Chapter 8 – Controlled Mines

The KMB Mine
The RM Mines

The RMA Mine

The RMB Mine

The RMC Mine

RM Mines used as Influence Mines

RM Mines used as Controlled Mines

The RMD Mine

The RME Mine

The RMH Mine

The RMH used as an Influence Mine

The RMH used as an Controlled Mine

Table of Influence Mines

Chapter 9 – Special Purpose Mines

THE HM Mines
General
The HMA Mine

The HMB Mine

The HMC Mine

The KM Mines

The KMA Mine

The MTA Mine
The BM 1000 F Mine
The BM 1000 L Mine
Winterballoon
Wasserballoon

Chapter 10 – Sweep Obstructors

Introduction
Explosive Conical Floats (Sprengboje C and Sprengboje D)
Static Conical Sweep Obstructor (Reisboje)
Aircraft-Laid Sweep Obstructors (BRA - BRB)

BRA

BRB

Tables of Anchor

Chapter 11 – Influence Mine Units - SVK and Luftwaffe

Section 1 – Influence Firing Devices - Tables

Influence Mine Units - Navy
Influence Mine Units - Luftwaffe
Operational Ground Influence Mines - Navy
Operational Moored Incluence Mines - Navy

Section 2 – Magnetic Units

M 1 Unit and Modifications

M 1 Unit

M 1s Unit

M 1r, MA 1r, and MA 1ar

M 1 Unit Circuit - Operation

M 1 (1st Revision) Unit Circuit - Operation

M 1 (2nd Revision) Unit Circuit - Operation

M 2 Unit

M 2 Unit Circuit - Operation

M 3 Unit

M 3 Unit Circuit - Operation

M 3 (Revision) Unit Circuit - Operation

M 4 Unit

Unit Construction

Latitude Adjustment and Arming Process

M 4 Used in Combination with Another Unit

M 5 Unit
M 101 Unit

M 101 Unit Circuit - Operation

M 101 with Three-Place P.D.M.

M 101 with Ten-Place P.D.M.

M 103 Unit

M 103 Operation

Section 3 – Acoustic Mine Units

A 1 Unit

A 1 Unit - Operation

A 1 (Allied - A Mk II) Unit

A 1 (Allied - A Mk III) Unit

A 1st - A 2st (Allied - A Mk VI) Circuit Operation

Microphones

Microphone Circuit

Basic Systems

System 1

System 2

System 3

System 1 - A 1, A 1st, A 2, A 2st, A 3

A 104

A 104 Circuit - Operation

System 2 - A 4, A 4st, A 105, A 105st

A 105 (Circuit - Operation)

System 3 - A 7 and A 107

Relay Reactions

A 107tc

Circuit Components

Section 4 – Magnetic-Acoustic Combination Units

MA 1, MA 1a, MA 1st, MA 2, and MA 3 Units

MA 1

MA 1a

MA 1st

MA 2

MA 2 with ZK IIc

MA 3

MA 101 Unit
MA 105 Unit

Section 5 – Subsonic Units

AT 1, AT 2, and AT 3 Units

Magnetophone

Magnetophone Construction

AT 1

Acoustic Triggering Circuit

AT 2 Amplifier (Subsonic)

AT 3 Amplifier (Subsonic)

"Hell" Doppelschwinger

Section 6 – Supersonic Units

AA 4 and AA 106 Units
AA 4 Unit

AA 4 Circuits

AA 106 Unit

Acoustic Triggering Circuit

Supersonic Receivers

Float and Float Release

P.S.E. and Anti-Leak Device

AE 1 and AE 101 Units

Possible Countermeasures to the Mine

Twin Receiver Mine A 106

The Magntostriction Receivers

The Float

The Circuit

Preliminary Switching On

The Triggering Circuit

Amplifier A for Horizontal Receiver

Amplifier B for Vertical Receiver

Timing Circuit

Anti-Freezing Switch

Sea Trials

Echo-Sounder Mines Type AE 1 and AE 101

The Magnetostriction Transducers

The Float

The Mineshells

The Circuits

Arming of the AE 1

Arming of the AE 101

Acoustic Trigger Circuit

The Rotary Converter

The High-Speed Camshaft

The Low-Speed Camshaft

The Lowest-Speed Camshaft

Transmitter and Firing Circuits

The Receiver Circuit

The Amplifier

The Trigger Circuit

AVC Amplifier and Anti-Sweeping Circuit

Section 7 – Pressure and Pressure-Combination Units

Pressure Mine Units and Detecting Devices
Pressure-Detecting Devices

General

Description

Operation

Pressure Components D 2 and D 102
Operation of D 103 Units
Characteristics of the D 113
Characteristics of the D 123
Characteristics of the D 133
AD 104 Unit

Operation

DA 102 Mine Unit Series

The Microphone

DA 102 Operation

DA 112

DA 132

DA 162

DA 244

DA 122, DA 142, and DA 152

DM 1 Unit

Section 8 – Experimental Units

Seismik Mine Unit
AJ 102 and AJD 102 Units
JDA 105 Unit
AMT Units

Mounting

ZR II Mechanism

Blocking

Operational Characteristics of AMT 1

Operational Characteristics of AMT 2

S 101 Unit
MDA 106
Cosmic Ray Unit
Wellensonde Unit
Gravitation Mine Unit
Elecktroden Effekt
Development of Optical Mine-Firing Mechanisms

Luftwaffe Units

SVK Test Model 1

SVK Test Model 2

SVK Test Model 3

SVK Test Model 4

SVK Test Model 5

SVK Test Model 6

Conclusions

Luftwaffe Forelle Unit

Induction Mine Units

BMA II

BMA III

J I

J V

Characteristics of Influence Mines - Navy
Sweeping Characteristics of Influence Mine Units - Navy

Chapter 12 – Clocks and Associated Devices

Introduction
Arming Clocks

UES I

UES II

UES IIa

Clock Starter Flate

UES II and UES IIa with LiS

UES II and UES IIa with Vorkontakt

Sterilizers (Zeit Einrichtungen)

ZE

ZE I

ZE II

ZE III

ZE III for 360 Days

ZE IV

ZE IVa

ZE V

ZE VI

Period Delay Mechanisms (Zahl Kontakt)

ZK I

ZK II

ZK IIa

ZK IIb

ZK IIc

ZK IId

ZK IIe

ZK IIf

Miscellaneous Clockwork Mechanism-Pausenuhr (Arming and Disarming Clock)

Entschärfer Werke (EW) (Disarming Clock)

Verzögerungs Kontakt (VK) (Delay Contact)

Verzögerungs Werk (VW) (Delay Clock)

Period Delay Mechanism

Mechanical P.D.M.

Electrical P.D.K., - Fuze Delay Switch

Automatic Latitude-Adjustment Devices

Mechanical A.L.A.

Magnetic A.L.A.

Electromagnetic A.L.A.

Prevent-Stripping Equipment (Geheimhaltereinrichtung)

LMB P.S.E.

TMA P.S.E.

BM 1000 P.S.E.

Mechanical P.S.E.

Sea-Cell P.S.E.

ZUS-40 Anti-Withdrawal Device

Chapter 13 – Miscellaneous Mines

KK Mine
RK Mine
K TR Mi Mines of the Wehrmacht

K TR Mi 38

K TR Mi 41

Bibliography

Technical Reports - Naval Technical Mission in Europe
Mine and Mine-Unit Documents forwarded from Germany
Miscellaneous Reports

Addenda

Personalities

SVK

E-Stelle (Luftwaffe)

Others

Firms Working on Mine Development - Research Institutes Working on Mines

Abbreviations

Abbreviations, German - Translations
Mine Unit Designations - Allied - German
Mine Designations - Allied - German

Chapter 1: History