Shipping containers for flowable materials

A container for shipping and storing flowable materials comprising:

• a vessel holding liquid, semi-solid, or solid flowable material, said vessel formed of six generally planar walls comprising a permeation barrier, said vessel having a generally rectangular cross-section as taken along at least one path from side to side, said vessel substantially composed of a rigid material having a density less than 3 grams per cubic centimeter and a tensile strength to density ratio of at least 80 megapascals per gram per cubic centimeter, said vessel having a vessel volume greater than 100 U.S. gallons;
• a plurality of corner fittings securely attached to said vessel, wherein one or more of said corner fittings enables said container to be lifted, and wherein one or more of said corner fittings enables said container to be secured to one of a transport platform, transport vehicle, and another container;
• and
• a liquid, semi-solid, or solid flowable material baffle inside of said vessel, said baffle comprising a frame configured to support a lattice of intersecting horizontal linear members and vertical linear members;
• wherein said container supports, without damage or deformity, the weight of another container containing water in an amount that exceeds half of said vessel volume.

A container for shipping and storing flowable materials comprising:

• a generally box-shaped vessel holding liquid, semi-solid, or solid flowable material, said vessel inhibiting permeation of said flowable material, said vessel substantially composed of a first material;
• and
• eight corner fittings substantially composed of a second material, each of said corner fittings positioned at each of eight corners of said vessel, said corner fittings being securely attached to said vessel, said container simultaneously and directly secures to six other containers;
• wherein said vessel is substantially composed of a rigid material having a density less than 3 grams per cubic centimeter and a tensile strength to density ratio of at least 80 megapascals per gram per cubic centimeter;
• wherein said second material has one of the following qualities in comparison to said first material, said qualities consisting of (1) being at least four times as dense as said first material;
• (2) having a tensile strength that is least five times as strong as said first material;
• and (3) having a tensile strength to density ratio that is at least two times a tensile strength to density ratio of said first material.