Appendix Three

CONVERSIONS AND ABBREVIATIONS

Conversions

1 nautical mile = 2,025 yards, 1,852 meters, or 1.151 statute miles

1 knot = 1.852 km/hour or 1.151 statute mile/hour

1 meter = 1.094 yards

1 yard = 0.9144 meters

1 centimeter = 0.3937 inches

1 inch = 2.54 centimeters

1 kilogram = 2.205 pounds

1 pound = 0.4536 kilograms

1 tonne = 0.9842 long tons

1 long ton = 1.016 tonnes

Abbreviations

General

AA  

antiair, antiaircraft

ABDA  

American-British-Dutch-Australian

ACNS  

assistant chiefs of the naval staff

AG  

antenna galvanic

AP  

armor-piercing

A/S  

antisubmarine

ASV  

air-surface vessel (radar)

ASW  

antisubmarine warfare

BCRA  

bureau central de renseignements et d’action

CEPSM  

Comission d’Etudes Pratiques des Sous-Marins

CIG  

centre d’information gouvernemental

CINCUS  

Commander in Chief, U.S. Fleet

COMINCH  

Commander in Chief, U.S. Fleet

CSDN  

Conseil Supérieur de la Défense Nationale

DC  

depth charge

DCT  

depth-charge thrower

DEA  

Deutsche Erdöl AG

DEM  

détecteur électro-magnétique

EMG/2  

Etat-Major/Deuxième Bureau

FAA  

Fleet Air Arm (British)

FHM  

Forces de Haute Mer

FMF  

Fleet Marine Force

FMF/2  

Forces Maritimes Françaises/Deuxième Bureau

FNEO  

Forces Navales d’Extrême-Orient

FNFL  

Free French Naval Forces

GDP  

gross domestic product

GHG  

Gruppenhorchgerät

GRT  

gross registered tons

HA  

high angle

HO  

hostilities only

IGHQ  

Imperial General Headquarters

KB  

Korabelnaia bolshaia

KGB  

Komitet gosudarstvennoy bezopasnosti

NCO  

noncommissioned officer

NID  

Naval Intelligence Division

NKVD  

Narodny komissariat vnutrennih del

NGS  

Naval General Staff

NROTC  

Naval Reserve Officers Training Corps

OIC  

Operational Intelligence Centre

OKH  

Oberkommando des Heeres

OKL  

Oberkommando der Luftwaffe

OKM  

Oberkommando der Kriegsmarine

OKW  

Oberbefehlshaber der Wehrmacht

OLS  

Detachment of Light Forces

ONI  

Office of Naval Intelligence

OPL  

Optique de Précision Levallois-Perret

RAF  

Royal Air Force

RDF  

radio-direction finding

RN  

Royal Navy

RNR  

Royal Naval Reserve

RNVR  

Royal Navy Volunteer Reserve

SAR  

search and rescue

SG  

Seeaufklärungsgruppe

SIS  

Servizio Informazione Segreto (Italy)

SIS  

Secret Intelligence Service (Britain)

SLC  

siluro a lenta corsa

SOM  

Société d’Optique et de Méchanique de Haute Précision

STCN  

Service Technique des Constructions Navales

TBS  

Talk Between Ships

TPA  

telefono per ammiragli

UAS  

U-Boot-Abwehr-Schule

USN  

United States Navy

VHF  

very high freqency

VMS RKKA  

Voenno-morskie Sily Raboche-krestianskoi Krasnoi Armii

VT  

variable time

WRNS  

Women’s Royal Naval Service (“Wrens”)

Ship Types

BAMS  

British and Allied Merchant Ship

BB  

battleship

BC  

battle cruiser

BM  

monitor

CA  

heavy cruiser

CAM  

catapult-armed merchant ship

CL  

light cruiser

CLA  

antiaircraft light cruiser

CV  

aircraft carrier

CVE  

escort carrier

DC  

corvette

DD  

destroyer

DE  

destroyer escort

DF  

frigate

DMS  

fast minelayer

DS  

sloop/escort

FCS  

fighter catapult ship

GS  

guard ship (Soviet sloop)

LCT  

landing craft, tank

LST  

landing ship, tank

LVT  

landing vehicle, tracked

MAC  

merchant aircraft carrier

MAS  

Italian motor torpedo boat (motoscafi armati siluranti or motoscafi anti sommergibili)

MFP  

marinefährprahm (German armed barge or “F” lighter)

MGB  

motor gunboat

ML  

minelayer or motor launch

MTB  

motor torpedo boat

PG  

gunboat (USN)

PT  

patrol torpedo boat (USN)

S-boat  

schnellboot (German motor torpedo boat or “E” boat)

SS  

submarine

TB  

torpedo boat

U-boat  

unterseeboot (German submarine)

UJ-boat  

unterseebootsjäger (German submarine chaser)