1. A RIGID TYPE LIGHTER-THAN-AIR CRAFT EMBODYING A PLURALITY OF ELONGATED HULLS, EACH OF WHICH HULLS HAS A FRAMEWORK THEREIN INCLUDING LONGITUDINALLY SPACED RING ASSEMBLIES CENTERED WITH RESPECT TO THE LONGITUDINAL AXIS OF THE HULL, AT LEAST A PORTION OF SAID RING ASSEMBLIES HAVING A LOAD SUPPORTING ELEMENT CARRIED THEREBY AND LOCATED ADJACENT SAID LONGITUDINAL AXIS, AND CONNECTING MEANS EXTENDING TRANSVERSELY OF SAID HULLS FROM THE AXIS OF ONE HULL TO THE AXIS OF ANOTHER AND SECURED TO THE LOAD SUPPORTING ELEMENTS OF RING ASSEMBLIES IN DIFFERENT HULLS.