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First World War (1914-1918)
The U-Boat Menace

The emergence of the submarine was a major development in naval warfare. German submarine - or U-Boat - attacks against Allied shipping in the Atlantic and in European waters posed a major threat to the Allied war effort.

Depth Charge, "Type G"
Depth Charge, "Type G"

Allied depth charges like this one were designed to attack and destroy submerged U-Boats.

Filled with high explosives and dropped or launched from a ship, depth charges sank and exploded at a pre-set depth. A direct hit could destroy a U-Boat, and misses might cause damage, forcing the submarine to the surface. The "Type G" depth charge, smaller and less powerful than many others, was used by small Royal Canadian Navy vessels, including motor launches, drifters, and patrol boats.

Depth Charge, "Type G"
CWM 19390002-455

The Return of U-9
U-Boat Deck Gun
Periscope Lens, U-117
U-Boat Signalling Lamp
Cut-Away German U-Boat Mine
German Naval Mine, U-153
SS Audax Sinking
Life Ring, SS Brussels
Life Ring, UC-77
"We risk our lives to bring you food. It's up to you not to waste it."
Porthole, RMS Lusitania
Qu'importe l'existence des Neutres! L'Allemagne est au dessus de tout! (Neutrality is irrelevant! Germany sees herself above all else!)
HMHS Llandovery Castle
Depth Charge, "Type G"
Model, U-27
First World War Atlantic Convoy
German Submarine U-118