Similar to 伊号第百二十一潜水艦

Obice da 210/22

Cannone da 75/27 modello 06

Cannone da 75/27 modello 11

Cannone da 75/32 modello 37

Darwin Information Typing Architecture

Dasher (software)

Data Encryption Standard

German Equipment Works

Belyayev DB-LK

Dbx (noise reduction)

Douglas DC-1

Douglas DC-4E

Douglas DC-7

JNR Class DE10

DEC Alpha

DECnet

Japanese aircraft carrier Akagi

HMS Adventure (M23)

SS Arandora Star

RMS Alcantara (1926)

Japanese submarine I-53 (1925)

USS Wake

Italian minelayer Lepanto

SS Cap Arcona

USS Saratoga (CV-3)