A Presentation on basic hull modelling,using Freeship,Autocad,Modelmaker etc from offsets,Prepared for Training Related Activities. Prepared by:Vipin Devaraj, 38Th RS, Dept Of Ship Technology, Cusat,INDIA contact:vipindevaraj94@gmail.com

1. ⚡HULL MODELLING
SOFTWARES USED: 1.AUTODESK AUTOCAD 2014
2:FREESHIP V3.4
3:MODELMAKER
4:DEADWEIGHT(GF VIEWER)
5:MICROSOFT EXCEL
BY:
VIPIN DEVARAJ
DEPT OF SHIP TECHNOLOGY,
TRAINEE,INTERNATIONAL SHIPPING
BUREAU, KAKKANAD ,KOCHI
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT

2. ⚡ PROCEDURE INVOLVED
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT
• IMPORTING
OF OFFSET
INTO
MODELMAKE
R
• FAIRING OF
THE HULL
AND
EXPORTING
OF OFFSET
• VIEWING
THE STATION
AND
CORRECTING
ANY ERRORS
IN OFFSET
• PREPATION
OF THE
OFFSET INTO
REQUIRED
FORMAT FOR
MODELMAKE
R
• IMPORTING
OFFSET INTO
FREESHIPV3.
4
• EXTRACTION
OF OFFSET
• PREPARATIO
N OF OFFSET
TABLE
• VIEWING THE
GF FILE IN GF
VIEWER
(DEADWEIGHT)
• BASIC FLOW CHART

3. ⚡ EXTRACTION/PREPARATION OF OFFSET
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT
BODY PLAN USED TO EXTRACT OFFSET TABLE
• USING THE LINEAR DIMENSION FUNCTION OF AUTOCAD,THE DISTANCE OF EACH STATION FOR A FIXED WATERLINE WAS FOUND
FROM THE MIDSHIP AND REPEATING THE PROCESS FOR EACH STATION ,THE OFFSET TABLE WAS MADE

4. ⚡ EXTRACTION/PREPARATION OF OFFSET
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT
• OFFSET PREPARED IN
MICROSOFT EXCEL USING THE
DATA FROM AUTOCAD DRAWING
OF BODY PLAN

5. ⚡ PREPARATION OF OFFSET TABLE
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT
• OFFSET ARRANGED IN FORMAT
REQUIRED FOR IMPORTING TO
FREESHIP V3.4
• THIS IS DONE BY GETTING
REQUIRED COORDINATES
OF POINTS ON EACH
STATION LINE FROM THE
AUTOCAD DRAWING OF
BODYPLAN

6. ⚡ IMPORTING TO FREESHIP V3.4
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT
• UNFAIRED HULL OBTAINED AFTER
IMPORTING OFFSET IN THE REQUIRED
FORMAT FOR FREESHIP V3.4
• WIREMESH VIEW

7. ⚡ FAIRING OF HULL
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT
• HULL DEVELOPED AFTER FAIRING
IN FREESHIP V3.4
• WIREMESH VIEW • SHADED VIEW

8. ⚡ PREPARATION OF OFFSET
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT
• CHANGING OFFSET IN
REQUIRED FORMAT TO IMPORT
INTO MODELMAKER
• COORDINATES OF POINTS ON
EACH STATION IS GIVEN,AND A
LOCUS OF THESE POINTS ARE
DEVELOPED.AN ADDITIONAL
END POINT IS ADDED TO
COMPLETE THE CURVE

9. ⚡ IMPORTING TO MODELMAKER
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT
• PLAN VIEW
• ISO VIEW
• PROFILE VIEW

10. ⚡ VIEWING OF MODEL
• GF FILE MADE IN MODELMAKER
VIEWED IN A GF
VIEWER(DEADWEIGHT)
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT

11. ⚡ DEVELOPMENT OF OTHER STRUCTURES
• OTHER MODELS MADE
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT

12. ⚡ DEVELOPMENT OF OTHER STRUCTURES
• OTHER MODELS MADE
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT

13. ⚡ ADDITION OF OTHER STRUCTURES
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT
• PLAN VIEW
• ISO VIEW
• PROFILE VIEW

14. ⚡ FINAL DEVELOPED SHIP
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT
• FINAL MODEL WITH SUPERSTRUCTURE AND
FUEL/OIL TANK MADE USING MODELMAKER
CMD FUNCTIONS
• CMD COMMANDS USED

15. ⚡
THANK YOU
© VIPIN DEVARAJ, DEPARTMENT OF SHIP TECHNOLOGY,CUSAT