ShipWeight Presentation

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ShipWeight

• More than 15 years of weight engineering in the ship and oil offshore industry

• ShipWeight:– Weight & CG Estimation – Weight & CG Tracking– Weight & CG Monitoring– Weight & CG During 

OperationI hi d d i• In use at shipyards, design firms, and navies all over the world

d f l f l l d l l ( fUsed for a large variety of vessels, including naval vessels (aircraft carriers, submarines, destroyers, etc.), offshore vessels (FPSO’s, Semi‐submersibles, etc.) to commercial ships (tankers, cruise and fishing vessels, etc.)

ShipWeight Active UsersShipWeight ‐ Active Users• Sales worldwideSa es o d de

– 140 licenses sold, to– 50 different companies, in– 14 different countries, on,– 4 continents

• In the US: – NNS, BIW, EB, NASSCO, MMC, 

VT Halter, Austal, Textron, etc.• In Europe:

– Aircraft Carrier Alliance, Rolls‐Royce Marine, Ulstein Design, etc.

• In Asia:– Mazagon Dock Limited, SBMMazagon Dock Limited, SBM 

Malaysia, SDARI China, etc..

One Tool for All Weight EngineeringOne Tool for All Weight Engineering

Reuse and Utilize Your As built Data !!

Contract Delivery

Reuse and Utilize Your As‐built Data  !!

Development/Detailed design

Design/Concept Production

Estimation based on past

ShipWeight

Administration of weight data

ShipWeight

Tracking and monitoring

ShipWeight

Estimation based on past weight data using parametric ratio formulas

Administration of weight data available from other systems (import)

Tracking and monitoring reported weights

Data from the complete vessel is reused in new estimations

Building Blocks of a Weight Engineering toolBuilding Blocks of a Weight Engineering tool

OutputOutput

Reports Data dumps Tailored exports

CalculationsCalculations

Estimation Tracking Monitoring Related Estimation Tracking Monitoring Functions

InputInput

Manual input Generic import Tailored import

Database StorageDatabase Storage

WBS Historical  Project data Log data SecurityWBS data Project data Log data Security

ShipWeight – Technical Information• Windows application do s app cat o

running on SQL Server– Compatible with SQL 

Server 2000, 2005 and 20082008

– Running on Windows XP, Vista & 7

• Multi‐user applicationMulti user application– Virtually unlimited 

number of simultaneous users

– Can handle large amounts data (millions of weight items)

• Scalable!Scalable!• First release in 1995

– Version 11.0 just released

Administration & SecurityAdministration & Security• Backup utility

• Internal permission system similar to Windows 

security, but independent from OS and server.y, p

• User‐defined password policy.

• Permission assigned to user groups.  Users 

assigned to group. 

• Ability to control ShipWeight access in detail.

• Different access settings on different projects• Different access settings on different projects.

• All actions are logged

ShipWeight• Preserves knowledge in Company• Preserves knowledge in Company• Is a Database Tool

– Excel – widely used but…y• Prone to errors• Often related to the inventor and difficult to implement across the organizationL k f it f t d t l• Lack of security features and user control

• Not very suitable to produce good reports• Single user system

– Advantages over Access• Multi‐user• Continued development, with input from industryContinued development, with input from industry• Updated to latest operating system and database versions• Feature rich

Work Breakdown StructureWork Breakdown Structure• The construction isThe construction is 

divided into a work breakdown structure (WBS) suitable for thesuitable for the user organization, forming a hierarchy of weight groups

• The standard WBS suits most types of  

t ticonstructions

• Can be edited and t i dcustomized 

ShipWeight InputShipWeight ‐ Input• Combined single record and table• Combined single record‐ and table 

view

• User‐customized setup of input iview

• Up to 100 user‐defined fields– Maturity & ContingencyMaturity & Contingency– Modules & Sections– Allowance– Fluids– Department & Disciplinesepa t e t & sc p es

• Sorting and filtering capability

• Multiple modification of items

• Windows Cut, Copy and Paste

Supporting Production Modules• Custom Codes will let the user tag items to user defined attributes such• Custom Codes will let the user tag items to user defined attributes such 

as:– Modules– Section– Section– Discipline– Maturity– ... and any other property defined by the user... and any other property defined by the user

• When items are tagged, ShipWeight can– Summarize– GroupGroup– Filter– Sort– Reportp– Compare– Run trendlines– ... according to the codes 

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Data File ImportData File ImportTh f ll i f t• The following formats can be imported in a generic way defined by the user:

Flat text files– Flat text files– Delimited text files

• Tab‐delimited• Comma delimitedComma delimited• Etc…

– MS Excel files– MS Access filesMS Access files

Fulcrum 3DFulcrum 3DF l 3D i f• Fulcrum 3D– Special tool to transfer 

weight and CG data from h

• Requirements for successful application:

ShipConstructor to ShipWeight

– Produces an XML file that 

– Tagging of SWBS numbers to ShipConstructor itemscan be consumed by 

ShipWeight– ”Intelligent” import

ShipConstructor items

Fulcrum3D• Deletes items from ShipWeight that have been removed from the model”R b ” l t i t

Fulcrum3DDetailDesignModel Weight

Engineering• ”Remembers” last import and can handle special cases related to block changes, etc.

EngineeringModel

g ,

13/25 

Parametric EstimationE i i h b d hi i l d• Estimate weight groups based upon historical data

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Weight & CoG Parametric EstimationSmall sample of weight groups with parametric formulas. The 

Let us look at an example for the estimation of one

sum of groups gives the total weight estimate for the vessel.

for the estimation of one single weight group: Propulsion LightShip

W=k*LBD*sqrt(Cb)

200

W=k*Power^0.65

300W=k*L*B

100

W=k*WatsonE

210 220 310 320 110

W=k*... W=k*.... W=k*... W=k*.... W=k*...

Regression on Historical DataEstimation method: W = k*P^0.65 Historical Data Weight [t] Power [kW] k (Weight/Pwr.)

Vessel 1 4100 26000 0.16V l 2 3500 20000 0 18Vessel 2 3500 20000 0.18Vessel 3 3000 16000 0.19Vessel 4 2600 14000 0.19Vessel 5 2300 11000 0.21Vessel 6 2200 9800 0.22Vessel 7 2000 8500 0.240.25

0.21

0.22

0.24

0.21

0.22

0.23

0.24

Examples of parametric formulas:W = k * P^0.65W = k * L*B        __W = k * L*B*D*√Cb

0.18

0.190.19

0.17

0.18

0.19

0.20k W = k * Watson‐E

0.16

0.15

0.16

5000 10000 15000 20000 25000 30000

Propulsion Power 

Leveraging an existing database• A new design can leverage from one or more existing projects in the 

following ways:following ways:– All or some of the SWBS groups can be scaled parametrically based on ratio‐

coefficients that are extracted from a single past vessel or through regression on several vessels

– All or some of the SWBS groups can be populated from importing detailed items or total weight from one or more existing vessels

– Items can be added, deleted and/or changed after import or scaling

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Transition to TrackingW i h i i i• Weight group parametric estimation are total values for each weight group

• Tracking is assigning weight items to a weight groupweight group.– Assigning is done through manual input or from data import text files, Excel or CAD systems.data import text files, Excel or CAD systems.

• Weight group value is the sum of all itemsWeight group value is the sum of all items assigned to a weight group

ShipWeight Main WindowShipWeight Main Window

• Runtime summation of all key values for all levels of the work breakdown structure (weight groups)breakdown structure (weight groups)

Playground AreaPlayground Area

ShipWeight ”Playground Area” is a workspace where you can enter and edit weight data outside the main project d tdata

Weight data is checked in and out of the ”Playground Area” and this operation is logged along with change summaries

The purpose of the ”Playground Area” isTo be able to check changes to the database before it goes ”live”To track changes to the database betterTo handle margins better

Phase Coding (Configuration/Serializaton)

h di l ki h i• Phase coding means looking at the series production as a timeline, where:– The timeline is starting with vehicle 1 and ending at vehicle n.Y d fi th h i f– You define the necessary phases, ranging from any start and endpoint on the timelineWeight items are tagged to a phase meaning that– Weight items are tagged to a phase, meaning that they are to be included for vehicles in this phase

– The total weight of an individual vehicle is the sum ofThe total weight of an individual vehicle is the sum of all items tagged to the phases that the ”time” of the vehicle corresponds to

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General Example• Allowing to set ”Time In” and ”Time• Allowing to set  Time In  and  Time 

Out”– Defining the ”time” an item is to be 

includedT b d h ”Fl ”

Code Time In Time Out

Phase AC 0 30

Phase AZ 20 80

Ph CX 10 50• To be used when ”Flags” are not sufficient

• To be combined with Global Filter

Phase CX 10 50

Phase CG 30 100

Phase AZ 0 100

Phase SZ 70 100Phase SZ 70 100

Timeline

0 10 20 30 40 50 60 70 80 90 100

Phase AC

Phase AZ

Phase CX

Phase CGase CG

Phase AZ

Phase SZ

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Filter: Weight at time 55

Example: Vessels

• Series of 10 hulls with modifications

Hull no.

1 2 3 4 5 6 7 8 9 10

BaselineBaseline

Mod. 1

Mod. 2

Mod 3Mod. 3

Mod. 4

Mod. 5

Filter: Hull no 7Filter: Hull no 7

Baseline + Mod. 2 & 4

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Weight Distribution CurveWeight Distribution Curve

• To obtain the weight distribution curve, fore d f land aft values must 

have been entered for the weight items

• Default Extension can be given

• The curve can be exported to severalexported to several different file formats readable for stability programsp g

Moment of Inertia & GyradiusMoment of Inertia & Gyradius• Moments of Inertia are• Moments of Inertia are 

calculated using Steiner’s theorem

• Inertia around a single weight item is calculated approximating the item to a boxbox

• Gyradius values for input to seakeeping analysis p g ycalculated for

– Roll– Pitch– YawYaw– Pitch/Yaw– Roll/Yaw

3D Visualization• Open GL graphics for 

visual sanity checkingvisual sanity checking• Rhino Plug‐in

Reporting• Crystal Reports combined with ShipWeight custom codes makes it 

easy to report at various levels of coordinates and coded subgrouping

• Export to text file Excel Word & PDF formatExport to text file, Excel, Word & PDF format• Group, summarize and display graphs for the quantities you want• SAWE RP12 Report  templates are included

Hydrostatics/Loading ConditionsB i h d t ti d l di diti b l l t d• Basic hydrostatics and loading conditions can be calculated

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Vetting databasesD t b b h d f t th• Databases can be exchanged from one server to another through:– Text file import/export of complete databasesp p p– Backup/Restore– Separate export/import

• Excel/Txt for items• Excel/Txt for items• Excel/Txt for parameters• Excel/Txt for custom codes/item settings

• Compare Dialog• Compare Dialog• Custom Crystal Report• RequirementsRequirements

– SWBS Compare: always possible– Custom Codes: Needs to be aligned

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Overview

• What is Crystal Reports and how does it connect with ShipWeight?p g

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ShipWeight Fullfills all ”Building blocks”ShipWeight – Fullfills all  Building blocks

OutputOutput

Reports Data dumps Tailored exports

CalculationsCalculations

Estimation Tracking Monitoring Related Estimation Tracking Monitoring Functions

InputInput

Manual input Generic import Tailored import

Database StorageDatabase Storage

WBS Historical  Project data Log data SecurityWBS data Project data Log data Security