sentences:  In early 1942 the Nazi Germany's "Kriegsmarine", began anti-shipping operations using U-Boats in the Caribbean.The subs sank several tankers in the harbor at Sint Nicholaas, Aruba and even shelled an oil refinery on the island.It's important to note that the refineries at the island of Aruba and Curaçao possessed oil from wells in Venezuela and counted for one-third of the Allies supply of gasoline.