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I would say that classed ratings do account for cargo accelerations, DNVGL do state that for a distributed load, the static and dynamic pressures due to this distributed load shall be considered. But the brochure's data has, as stated, to be verified. best regards Torbjörn T.

You should not settle with anything less than a FE-app on your iPad: http://www.nenastran.com/press-room/NEi-Software-Announces-Free-Mobile-FEA-Application No idea how it works since my company does not supply us with IPads ;-) T.

Hi. I am into designing the hull of 25m 40knot aluminum vessel. Industry standard is to use NV/EN/AA 5083 for plating due to good strength and corrosion resistance. For this project we are considering to use NV-5059, branded as Corus Alustar, which have an almost 30% higher yield strength than...

If you are looking for angle bars or of bulb flats Norskt Stål (www.norskstaal.no) can supply a selection of dimension in D36-quality. Bulbs: http://www.norskstaal.no/varekatalog/varekatalog.aspx?varegr=13_1# Angles: http://www.norskstaal.no/varekatalog/varekatalog.aspx?varegr=14_1# Regards T.

Heated to 200 deg C it is a liguid. The type of vessel you will need is refered to as Bitumen tanker. The vessel cargo capacity is measured in DWT, i.e you need a ship with a capacity of 5.000 DWT or greater, or two smaller. Tarbit Shipping and Theodora Tankers BV are two ship owners in the same...

Just some additional to DrillerNics post. GVA is owned by/part of KBR, and hence "a big boy" ;). T.

Standard and standard.. I am really not sure what you are looking for but the AMOS-maintenance system is in some organizations considered as a standard although a commercial product. http://www.spectec.net/default.asp The SFI group system was a norwiegan standard but seems only be available...

Yes it does. Its a statistical method to get an approximate weight for estamating price in the early phase of a project when I only have intended main main dimensions of the vessel. Each type of vessel (or each yard) have different methods to estimate weight, and I am intrested in a publication...

Could anyone please share any method, by rule of thumb, to calculate the steelweight of any ship in general, and a 50m coastguard vessel in particular, for the use in the early project phase. I.e. LxBxHx "C" = Weight or preferably somethin more exact? Thanks T.

I would certainly use linear tets for a first-run, since my pre-processor (and virtually any other) easily converts them to parabolic, in order to save analysis time if needed. My definition of "first-run" is a test-run where I check that the model is possible to analyze and have a reasonable...

AngelAlvarez> A twin engine configuration does not outrule the use of the stern-thruster. Large cruise-ship often are have that configuration because it improves their manouverbility?? partly due to their large superstructure creating large wind-forces. A must? Maybe not, but they make life...

I am often performing extensive penetration-analyses for large steel-constructions. For the moment penetrations of girder-beams. I am looking for reference-books/hand-books covering the topic (girder penetrations). Both theoretical books and books containing tabulated examples/typical cases are...

Rjeffery: Do you mean that you use the anodes to protect the superstructure, or do you mean the underwater-hull mounted anodes? Jusy curious.

The explosion welding is a well proven design often used in marine applications without corrosion problems There is corrosion, but the speed is reduced greatly and as good as zero due to protective aluminium oxide in the interface between the materials. Due the solid bonding it is not possible...

It is not possible to weld aluminium to steel without serious corrosion problems. However there are profiles with one side aluminium and one side steel which are "exploded together". Then you weld steel/steel and alu/alu. Maybe not an opion for you but a very neat way of joining...

Hi. Using triangles ( I assume you use linear elements) would typical give a conservative value. These elements have a constant strain element formulation and are stiffer than a four-node ectangular element, and hence they should be avoided. I might not be able to explain this but any textbook...

Typical F.S. for different operating conditions and failure modes are for instance found in the ABS rule-books which can be downloaded from their homepage: http://www.eagle.org/rules/downloads.html The F.S is dependent of type of structure (ship, fixed structure), as eureka states so make sure...