Оборудование для морских перевозок SEC Bremen

Lashing bridges Ship`s Equipment Centre Bremen GmbH May 2011 © Technical alterations reserved 8.4 Another positive effect of lashing bridges is easy access to reefer containers at second tier. Many subjects have to be considered when designing a lashing bridge: - At first the layout of transversal hold beam has to be checked together with yard and hatch cover designers considering guiding system of hatch cover panels, arrangement of bearing pads and lifting stoppers, sliding range of hatch covers due to ship’s torsion, installation tolerances, minimum breadth of walkways, strength of lashing bridge etc. - The longitudinal gap between lashing bridge and container end to be minimised therefore all containers should be arranged symmetrically on hatch covers. - Also at this stage the arrangement of reefer sockets and parking positions for loose lashing gear has to be considered. - Next thing is the optimised arrangement of lashing plates on lashing bridge in order to ensure unified length of lashing rods. Preferably fixed lashing plates are used on lashing bridges instead of slewing eyes because of lower costs and no maintenance work. In the case that an average angle of inclination for the lashing plates which covers all lashing combinations and container heights/sizes can not be found slewing eyes can not be avoided. - Some classification societies are requesting a detailed investigation considering three dimensional lashing, deflection of lashing bridge and shifting of hatch cover panels. These calculations can no longer be performed with standard lashing programs instead FEM to be used.