There shall not be implied in any contract of carriage of goods by sea to which the Hague-Visby Rules apply under the Act any absolute undertaking (i. e. a guarantee) by the carrier to provide a seaworthy ship. However, the carrier still has the clear obligation to exercise, before and at the beginning of the voyage, due diligence to make the ship seaworthy, properly man, equip and supply her, and make her holds, refrigerating and cool chambers, and all other parts of the ship in which goods are carried, fit and safe for their reception, carriage and preservation.