Hatchcoverless container ship, also open-top container ship

英文Hatchcoverless container ship, also open-top container ship

中文 (征集中)


The concept of the containership without hatch covers developed to reduce turnaround time in port and cargo handling costs by eliminating the need to remove and replace covers, and to fit and remove twistlocks and lashing the deck containers. To prevent flooding, the open-top vessel has the increased freeboard and bilge-pumping system designed with the capacity to cope with the volume of water predicted to enter the open holds during the worst sea conditions and severe tropical storms. Eliminating the hatch covers allows continuous cell guides to extend from the holds to secure the deck containers. The hatchcoverless concept offers the benefit of safe container stowage without the lashing. Furthermore, the open ship configuration gives considerable advantages with respect to heat disposal from cargo holds. The first hatchcoverless containership was WESTPHALIA: a converted barge carrier completed as JOSEFA TORRES by the Sestao yard of Astilleros Espanoles in 1983. All the design and certification work as a hatchless containership was done by V.Ships of Monaco. Cell guides were manufactured and fitted by RNL at Dunkirk, France. WESTPHALIA entered service in January 1989, and made two round trips to Australia before starting a feeder service in the Arabian Gulf. She calls at ports in the United Arab Emirates, Saudi Arabia and Kuwait, and everyone agrees that the cell guide concept without hatch covers saves a significant amount of port time. The ship was classed by the ABS and flies the Liberian Flag. Amongst the earliest hatchcoverless vessels were BELL PIONEER ad EURO POWER which came into service in September 1990 and September 1992 respectively. These vessels have been employed in intensive short-sea services both in the Pacific and European regions, and have encountered severe weather conditions, including tropical storms and high wave conditions. During this time, containers neither have suffered water damage, nor have been crushed in the cell guide system. The largest hatchcoverless container vessel, the 4112TEU capacity NEDLLOYD HONGKONG was delivered in February of 1994 by Kure Shipyard of Ishikawajima-Harima Heavy Industries. The ship has been designed purely as a larger, post-Panamax version of the earlier Nedlloyd Asia class and designated as “The Ultimate Container Carrier”. To cope with water intake in the holds of NEDLLOYD HONG KONG, two separate pumping systems have been arranged to serve the fore and after ends of each compartment. Container sockets in holds are 30cm higher than on conventional ships to allow water ingress to flow freely underneath. Gutters running along either side of the hold lengths drain water into the four bilge wells. Activation of the pumping system is either by automatic level controllers or by manual operation. See also Hatchcoverless container ship NORASIA FRIBOURG and Open-top reefer container vessel DOLE COLOMBIA



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