Cold cargo ship and construction

Claim 1

IN THE TRANSPORTATION OF A CARGO WHICH NEEDS TO BE MAINTAINED AT A TEMPERATURE DIFFERING WIDELY FROM AMBIENT TEMPERATURE, A SHIP HAVING AN OUTER HULL AND AN INNER HULL IN CLOSELY SPACED-APART RELATION WITH THE OUTER HULL AND DEFINING A HOLD SPACE, A RELATIVELY THICK LAYER OF INSULATION ON THE INNER SURFACE OF THE INNER HULL TO PROVIDE AN INSULATED SPACE, BULKHEADS EXTENDING CROSSWISE AND LENGTHWISE OF THE SHIP BETWEEN THE INNER AND OUTER HULLS TO SUBDIVIDE THE SPACE INTO A PLURALITY OF SEPARATED WING TANKS, INLETS AND OUTLETS CONTAINED IN SPACEDAPART RELATION WITHIN EACH OF SAID WING TANKS, A PUMPING MEANS, A CONNECTION BETWEEN SAID PUMPING MEANS AND THE INLETS IN EACH OF SAID WING TANKS, ANOTHER CONNECTION BETWEEN SAID PUMPING MEANS AND THE OUTLET IN EACH OF SAID WING TANKS AND A CONNECTION BETWEEN SAID PUMPING MEANS AND A SOURCE OF BALLAST FLUID TO BE INTRODUCED INTO SAID WING TANKS WHEREBY SAID BALLAST FLUID CAN BE CIRCULATED THROUGH SAID WING TANKS.