Inflatable toroidal polyhedron buoyancy tube for a life raft

A buoyancy tube comprising:

• a first panel including:
• a first panel top edge;
• a first panel bottom edge spaced apart the first panel top edge such that a first panel transverse axis is defined between the first panel top edge and the first panel bottom edge,
• wherein the first panel top edge defines a first repeating pattern, and the first panel bottom edge defines a second repeating pattern that is a rotated version of the first panel top edge about a first panel rotational axis;
• a first panel tip edge;
• and
• a first panel tail edge apart from first panel tip edge such that a first panel longitudinal axis perpendicular to the first panel transverse axis is defined between the first panel tip edge and the first panel tail edge,
• wherein the first panel is welded upon itself with the a first elongated seam and a second elongated seam that are non-overlapping with one another, wherein the first elongated seam connects the first panel bottom edge, adjacent to the first panel tail edge, with the first panel top edge, intermediate of the first panel tail edge and the first panel tip edge, and extends continuously to the first panel tip edge, and the second elongated seam connects the first panel top edge, adjacent to the first panel tail edge, with the first panel bottom edge, intermediate of the first panel tail edge and the first panel tip edge, and extends continuously to the first panel tip edge, and
• wherein the first elongated seam and second elongated seam, when connected, define outer an inner boundaries of the life raft, the outer boundary defines an outer polygon having a plurality of outer sides and the inner boundary defining an inner polygon having a plurality of inner sides such that each of the plurality of outer sides is parallel with one of the plurality of inner sides.