I presume you mean armed ships disguised to look harmless. Such ships used by the British in World War I were known as Q ships. Those used by the German Navy in World War II were known as "Auxiliary cruisers" -- I think the German word is "Hilfskreuzer".
Armed merchantmen.
raiders
103 merchant ships were sunk in world war one
Merchant ships can't have weapons because the government doesn't want weapons to be sold overseas. Which may be contributing to the war in Iraq.
3,000 Allied ships (175 warships; 2,825 merchant ships)
The ships were called privateers. The authorisations were called letters of marque.
Triangular trade
103 merchant ships were sunk in world war one
The operation to protect American merchant ships in the Atlantic before the US entered the war was called the Neutrality Patrol. It involved escorting and protecting merchant ships from attacks by German submarines.
German U-Boats destroyed American merchant ships
Roger Villar has written: 'Merchant ships at war' -- subject(s): Armed merchant ships, British Naval operations, Falkland Islands War, 1982, Merchant ships
Armed merchantmen.
Merchant ships can't have weapons because the government doesn't want weapons to be sold overseas. Which may be contributing to the war in Iraq.
We entered World War 1 because of a German submarine attack on U.S. merchant ships in 1917.
3,000 Allied ships (175 warships; 2,825 merchant ships)
Merchant Marine Liberty ships
no they destroyed them
Sinking merchant ships.
The ships were called privateers. The authorisations were called letters of marque.