Welcome to the

Balloon

Sub name: 
Designer: 
Builder: 
Description:
I took this picture last week on a Dragon and Ballon Festival
in Lemwerder near Bremen, Germany. 

It is maybe the ultimative Psub.
Diameter about 2,2 m (7.2 feet),
length about 7-8 meter (23-26 feet),
aircondition and a displacement 
more or less near zero..
(Carsten Standfuss 14 Sep 2000)