Show:
Countering
1915
1916
1917
1918
100
What invention allowed more aerial reconnaissance?
Carrier
100
What type of ships did the U-Boats target?
Merchant
100
Germany repeatedly asked the USA to do what if they called off the U-Boat campaign?
Ignore the Blockade
100
How many weeks food did the U-Boats get Britain down too?
5 Weeks
100
What dropped amongst the German sailors in 1918?
Morale or Life Expectancy
200
Disguised naval ships were known as what?
Q- Ships
200
What was the name of the ocean liner that was sunk in May with 127 Americans on board?
Lusitania
200
Hindenburg decided to resume the campaign after what failed in 1916?
The Harvest
200
How many tonnes of destroyed shipping a month was it thought enough to starve Britain?
600,000 Tonnes
200
How many U-Boats did the British capture at the end of the war?
176
300
Who ensured that the Convoy system took place?
Lloyd George
300
How many U-Boats did Germany have when it begun the campaign?
23
300
How many Americans were injured when the Sussex was sunk in April?
Two
300
How many U-Boats did Germany have in total to sink British shipping?
69
300
What tactic did the German's fail to adopt?
Attacking in groups
400
What was the main method of sinking U-Boats?
Depth Chargers
400
After May, the U-Boats were ordered to stop and check for what before sinking a ship?
Contraband
400
Who recommended to the Kaiser that the U-Boat campaign be resumed after the Battle of Jutland?
Admiral Scheer
400
How did the USA learn of the Zimmerman Telegram?
Britain intercepted it and gave it to them.
400
What ended the campaign?
Capture of German U-Boat bases in Belgium
500
A Hydrophone will do what?
Pick up sounds underwater
500
On September 18, the U-Boat campaign was stopped after the USA threatened to do what?
Cut diplomatic relations
500
Who was Bethmann-Hollwegg?
Chancellor of Germany
500
How many US steamers were sunk after the campaign was resumed before they declared war in April?
Seven
500
What were the net losses of German U-Boats in 1918?
8