Hull structures

Classification Societies exist to promote the safe construction of ships and to protect that condition throughout the life of the vessel. One of the tools available to shipbuilders, shipowners and surveyors that can be used to achieve these aims is Non-Destructive Examination (NDE). The intent of this presentation is to describe the application of NDE to hull structure during construction and also during periodic surveys as seen from the viewpoint of the Classification Surveyor. 

The cyclic loading applied to hull structure will eventually lead to fatigue cracking. 

Bulk Carriers - Guidlines for Surveys, Assessment and Repair of Hull Structure" 1994, lACS... 

Wang G, Pran K, Sagvolden G, Havsgard GB, Jensen AE, Johnson GA, et al. Ship hull structure monitoring using fibre optic sensors. Smart Mater Struct 2001 10(3) 472—8. http //dx.doi.Org/10.1088/0964-1726/10/3/308. 

Information on underwater hulls is reviewed in Chapter 7 Filament Windings, Pressure Hull Structures. 

Rules for the Classification and Construction of Sea-Going Ships, Part XVI Hull Structure of Glass-Reinforced Plastic Ships and Boats, USSR Register of Shipping, undated. 

Collaboration is important fi om the CE point of view [10-13]. Depending on the shipyard, hull structure and outfitting design units are working in the same area... 

The OPA also set a schedule for the gradual phase-in of a double-hull design providing an additional layer between the oil tanks and the ocean. While a double hull would likely not have prevented the Exxon Valdez disaster (in fact, some of the leaking tanks were already within a double-hull structure), a Coast Guard study estimated that it would have cut the amount of oil spUled by 60 percent. All tankers traveling through the same area are scheduled to be double-huUed by 2015. 

The Russian urge to modernise (well recorded In Leo Tolstoy s writings), proved important to the reform of oider craft-based design traditions and to naval architecture particuiariy. Aiexei Nickoiaevich Krylov (1863-1945) addressed new scales of ship construction in an orderly way, combining theory, experiment and observation hull shapes were to be determined hydro-dynamically and hull structures were to be efficient distributions of material. 

Adoption of a seismic isolation and a ship hull structure (marine type protective enclosure structure). 

Suyuthi, A., Leira, B.J. and Riska 2012b Statistics of Local Ice Load Peaks on Ship Hulls , Structural Safety, Elsevier, Vol. 40 (2013), pp. 1-10. 

As an example, a yachtsman who discovers that his boat s aluminium hull structure exhibits superficial pitting corrosion only a few weeks after having been put in service is rightly upset. 

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