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Introduction toNAPA System

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General

Handling of all types of floatingstructures

All geometry definitions based on a 3D

ship model Single database, multi-user environment

Wide variety of naval architectural

calculations More than 40 links and interfaces

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Subsystems of NAPA

Command ENDbrings back one level

Command !ENDbrings back to TASK level

TASK

ADM TOC REF GM HYD LD CR DAM

INST SMDEF DR LGD

Simplified presentation of the subsystems:

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HELP functions in NAPA

!COM relevant task-specificcommands

!EXP command explanation

!COM ! transparent commands

Introduction to NAPA

Online Manuals

Help Viewer

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Files and Units

Secondary

database

UNIT 4

Project

database

UNIT 1

System

database

UNIT 2

NAPA

database

UNIT 7

TASK?>!ADD DRAW_PICTURE

Error Message:

Macro Not Found

Run DRAW_PICTURE from Project Database

Run DRAW_PICTUREfrom System Database

Run DRAW_PICTUREfrom NAPA Database

Calculation Results

ReplaceablePrimary Ship Model Data/Definitions

Common to All Projects

Delivered by Napa Ltd: READ ONLY

YES

YES

YES

NO

NO

NO

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File names

The units can be found as 4 separatebinary files located in Napa\pr directory

1. project.db (project database, UNIT 1)

2. project.sd (secondary database, UNIT 4)3. sysdb.db (system database, UNIT 2)

4. napadb061.db (NAPA database, UNIT 7)

The name of the NAPA database isrelated to the release used

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Projects and Versions

Data is organized into PROJECTS andVERSIONS

One project can contain several versions

One version is used as default

List of existing versions can be seen withcommand !VER LIST

p1234.db

DECKF

DECKF

B

ANAPA session project

P1234 version A

NAPA session project

P1234 version B

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Reference system

Each version has its own reference systemwhich provides some basic information aboutthe ship

The following parameters are absolutelynecessary: AP, FP fore and aft perpendiculars

LREF reference length

BREF reference breadth

TDWL design draught

XREF x-coord. of midpoint (wheredraught defined)

Initial frame spacing

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Reference system

The following commands can be used tosee the reference parameters

LIST

LIST ALLLIST ALL +

The initial reference system is created

on the basis of the installationparameters or the model referencesystem

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Starting a NAPA session

Start by Logging intoNAPA

Users must bedefined!

ADMI already exists New users are

created in ADM INST Task