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GB/T 17725-2011 English PDF

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GB/T 17725-2011: Shipbuilding -- Shipline -- Numerical representation of elements of the hull geometry
Status: Valid

GB/T 17725: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 17725-2011English169 Add to Cart 3 days [Need to translate] Shipbuilding -- Shipline -- Numerical representation of elements of the hull geometry Valid GB/T 17725-2011
GB/T 17725-1999English199 Add to Cart 2 days [Need to translate] Shipbuilding--Shipline--Numerical representation of elements of the hull geometry Obsolete GB/T 17725-1999

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Basic data

Standard ID GB/T 17725-2011 (GB/T17725-2011)
Description (Translated English) Shipbuilding -- Shipline -- Numerical representation of elements of the hull geometry
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard U07
Classification of International Standard 47.020.01
Word Count Estimation 7,766
Date of Issue 2011-12-30
Date of Implementation 2012-06-01
Older Standard (superseded by this standard) GB/T 17725-1999
Quoted Standard GB/T 23304-2009
Regulation (derived from) Announcement of Newly Approved National Standards No. 23 of 2011
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard provides a digital representation of hull lines approach to facilitate the hull geometry data defined in different systems conversions. The data format used by the GB/T 23304-2009 definition. This standard applies to hull lines numerals.

GB/T 17725-2011: Shipbuilding -- Shipline -- Numerical representation of elements of the hull geometry


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Shipbuilding. Shiplines. Numberical repesentation of elements of the hull geometry ICS 47.020.01 U07 National Standards of People's Republic of China Replacing GB/T 17725-1999 Ship hull lines of the hull geometry element Digital representation Issued on. 2011-12-30 2012-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given planning. This standard replaces GB/T 17725-1999 "digital shipbuilding hull lines of the hull geometry representation of the elements," and GB/T 17725- Compared to 1999, the main technical changes are as follows. --- Increasing the continuous line directed radius - Node digital representation (see 3.3.2); --- Digital continuous line without increasing the geometric elements of representation (see 3.4). The standard proposed by China State Shipbuilding Corporation. This standard by the National Standardization Technical Committee Marine boat ship based Technical Committee (SAC/TC12/SC3) centralized. This standard is drafted by. The 11th Institute of China State Shipbuilding Corporation. The main drafters of this standard. Zhao Jing, Chen Autumn. This standard replaces the standards previously issued as follows. --- GB/T 17725-1999. Ship hull lines of the hull geometry element Digital representation

1 Scope

This standard specifies the hull lines represented in digital form approach in order to geometry data between different definitions of hull conversion system. Data format definitions used by the GB/T 23304-2009. This standard applies to hull lines numerals.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 23304-2009 ship hull lines formats and data structures Definition 3 type digital line 3.1 Overview 3.1.1 uses a series of interrelated plane curves as the basis for the definition of hull lines. For the non-planar type line with its orthogonal plane On the projection line is defined. 3.1.2 using the interpolation function to define a set of hull lines. Standard functions are linear and circular interpolation. 3.2 Definition of hull lines 3.2.1 Each line consists of a type (N-1) line segments, each may be a straight line segment or arc, arc central angle α corresponding to the small In π. 3.2.2 continuous circular and linear hull lines consist of several segments end to end segments. 3.2.3 discontinuous line segments hull lines by a number of segments are not connected end to end, discontinuous information between each profile available -1E-8 and Additional descriptive information expressed in two ways. 3.3 Continuous hull lines representation 3.3.1 center - Node digital representation 3.3.1.1 center - node number representation in Figure 1.

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