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MEM35

Marine Engineers Messenger Volume 2 Issue 35

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SOFTWARE<br />

PRIMESHIP-HULL FOR BOX SHIPS RELEASED<br />

ClassNK has released the latest version of its structural design support software for container carriers.<br />

PrimeShip-HULL for Container Carriers consists of prescriptive calculation software and direct strength<br />

assessment software and offers improvements in the quality and efficiency of ship design.<br />

It includes a prescriptive calculation element that enables designers to perform assessments for structural<br />

strength requirements such as yield strength and fatigue strength assessments as specified in ClassNK’s Rules<br />

for the Survey and Construction of Steel Ships, in addition to longitudinal strength requirements specified in<br />

IACS Unified Requirements S11A. It also features a function to create a model of transverse members as well as<br />

longitudinal members, and a function to assess outside the cylindrical part of hull structure including the fore<br />

and aft part.<br />

A direct strength assessment feature includes a function for the torsional strength assessment of the hull.<br />

The updated software, in response to latest rules, enables designers to perform torsional strength<br />

assessments by superimposing stress components generated by working hull girder load on an FE model of an<br />

entire ship.<br />

ClassNK’s Dr. Toshiro Arima, Director of Rule Development Division, said: “To promote container carrier<br />

safety, ClassNK released amendments to its Rules and Guidance for the Survey and Construction of Steel Ships<br />

on 1 June 2017. In a further demonstration of its unwavering commitment to safety, ClassNK updated<br />

PrimeShip-HULL for Container Carriers to incorporate these latest rule amendments. The software update also<br />

including various improvements based upon users’ feedback will further increase the efficiency and quality of<br />

container carrier structural design.”<br />

RULES & REGULATIONS<br />

NEW BV RULES SUPPORT HYBRID POWER TAKE-UP<br />

French classification society Bureau Veritas has issued a new chapter to rules for electric and hybrid power<br />

solutions.<br />

The new notations power management (PM), power back-up (PB) and zero emission (ZE) standards are<br />

aimed at encouraging the wider uptake of energy storage systems (ESS).<br />

"Industry uptake of hybrid and battery technology has been driven by environmental regulation. But owners<br />

are also finding performance benefits and, for some operations, significant financial benefits seem likely –<br />

particularly as the availability of renewable energy increases,” said Martial Claudepierre, Bureau Veritas<br />

Business Development Manager.<br />

Innovation has been led by the cruise and ferry sector. However, Claudepierre believes wider adoption is<br />

being anticipated.<br />

Electric power provided by an ESS can be used to reduce local air emissions when in proximity to centres of<br />

population. It can also be used when a ship is in port, during manoeuvring or alongside or in emission control<br />

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