Stadt Zürich (ship, 1855) a few minutes. Thirteen men and eleven head of cattle died in this accident, making the sinking of the "Ludwig" by the "Stadt Zürich" the most serious shipping accident known at that time that had happened on Lake Constance. One consequence of the investigations into the disaster was an improvement in the signal regulations: in addition to the white bow light a green starboard and a red port light had to be carried. After the Bavarian ship, the "Ludwig" had sunk, the "Jura" was bought as a replacement, a ship which hitherto had worked on Lake Neuchâtel. She was dismantled,
SS Avila Star either wore or carried a lifejacket plus a red marker light to attach to it. On the evening of 5 July the started following "Avila". At 00:36 on 6 July by Berlin Time, east of São Miguel in the Azores, the submarine hit "Avila"s starboard side with two G7e torpedoes, one of which detonated in her boiler room. The order was given to abandon ship. The ship's engines and main generator were disabled, but her emergency dynamo was started which restored electric light. "Avila Star" carried eight lifeboats: the odd-numbered ones on her starboard side and the even-numbered ones on