four
o'clock
`` I did n't know when the Germans might declare war on me , and when they did I was determined to exterminate them . '' `` Well , plans thus being decided upon , '' said Frank , `` there is nothing to do but await the hour of departure . '' They discussed the plans in detail while they waited , however . At four o'clock Captain Jack got to his feet . `` Time to get busy , '' he said . Frank took command of the submarine . As he had feared , there was some protest among the men Captain Jack had decided upon to man the vessel , but the pirate chief soon overcame this .