Warrend the sub on the http://www.prismnet.com/~moki/20030113.171503/TWOMAN-2003-01.jpg file has a diamter of 0,964 meter (3,16 feet) and a cylinderhull length without the endcaps of 2,654 meter (8,7 feet). I estimate that the weight is about 2,8 ts. same sub with 1,2 meter (3,94 feet) diameter will be something around 4 ts. regards Carsten