http://www.ubootwaffe.net/ops/boat.cgi?boat=30
22.08.1939 - 27.09.1939
First Sailing - active patrol
U-30 left Wilhelmshaven under the command of Fritz-Julius Lemp on 22nd Aug 1939 for operations in the North Atlantic and arrived at return on 27th Sep 1939 after just over five weeks.
http://www.onwar.com/chrono/1939/sep39/f02sep39.htm
In Poland... Troops of German Army Group South (Rundstedt) troops are already over the Warta River in many places after rapid but expensive victories in the frontier battles. Krakow is now near the front line. In the north, 4th Army (Kluge) makes contact with the Third Army (Kuchler) from East Prussia. Two Polish divisions are destroyed while attempting to pull back through the Corridor. The Luftwaffe is spreading chaos in the Polish rear. The Polish regular troops have been stationed too far forward so the German advance is soon in their rear areas, preventing movement of reserves and completely dislocating any communication left unscathed by the repeated German air strikes in support of the ground forces. There are 6 air raids on Warsaw.
In London... Throughout the day there are frantic talks about how to oppose Germany. The British Parliament is openly opposed to the passive line that the Chamberlain government is taking and in the evening, the Cabinet decides to present an ultimatum to Germany. The National Service Act is passed, allowing for the conscription of all men aged 19-41.
In Paris... Deliberations on how to oppose the German invasion of Poland are held throughout the day. A French government decides to transmit an ultimatum to Germany. The government declares that it will fulfill its obligations to Poland.
In France... The British RAF Advanced Air Striking Force arrives. Some 10 bomber squadrons are involved in the deployment.
In Rome... Mussolini again declares Italian neutrality and calls for a 5-power peace conference.
In Berlin... The German government announces that Norwegian neutrality will be respected, provided that Britain and France do the same. Hitler rejects an offer to mediate the German-Polish dispute, made by Mussolini on August 31st and the proposal for a peace conference.
In Dublin... The Irish government declares its neutrality.
In Bern... The Swiss government orders a general mobilization.
So Churchills fear that the Labour and Liberal Parties would oppose a declaration of war turned out to be wrong?