Sonar with the Americans having the advantage.
arm the merchant ships
they threw you overboard.
The Convoy System was used to protect merchant ships ~ look to the related link below .
Lightening rods.
The convoys contributed to the success of allies by creating a mutual safter by sending warships to protect the merchant ships
Traveling in large convoys that included armed ships.
to destroy enemy ships and to kill allies
Yes, a number of Vichy French ships were sunk in the Mediterranean Sea by the Allies.
so they could take the allies by suprise and they could fire torpetos to wreck the allies ships
They were used to stop the Allies from getting supplies from America by attack the ships with the cargo on them. They were used to stop the Allies from getting supplies from America by attack the ships with the cargo on them.
no they destroyed them
There resources and advanced weaopns and also there ships