BANGLADESH UNIVERSITY OF BANGLADESH UNIVERSITY OF ENGINEERING & ENGINEERING & TECHNOLOGYTECHNOLOGY

NAME 338 SHIP DESIGN PROJECT & PRESENTATION-1DATE-26 AUG,2010

DESIGN OF WATER TAXIDESIGN OF WATER TAXI

Project Supervisor

Khabirul Haque Chowdhury

Professor

Department of NAME, BUET.

Presented by

Hasib Ul Haque (0712014)

Ahmad Shibli Saleheen (0712018)

Our first presentation on this project Our first presentation on this project includes includes ::

Principal particularsPreliminary lightweight, deadweight and

displacementPreliminary GAPreliminary lines planPreliminary hydrostatic calculation

Owner’s RequirementOwner’s Requirement

Ship type: Water Taxi Capacity: 95 Passenger Speed: 14 knots Route: Sadarghat-Ashulia (29.5km)

OBJECTIVESOBJECTIVESTo take advantage of Dhaka city’s circular

waterwayTo ease the water way communication with

comfortable serviceTo reduce the pressure on land transport.To safe people from horrible traffic jamTo establish a modern transport system which is

more safe, affordable, technologically dependable, environment friendly, and acceptable to all citizens of the country

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Inland Water Transport Network by Category

Class Class Indicated Indicated DraftDraft

Length Length in Km.in Km.

ClassificatioClassification criterian criteria

I 3.6 meter 683 at least 3.6 m required to maintain round the year.

II 2.1 meter 1000 major inland ports or place of economic importance to class I routes.

III 1.5 meter 1885 seasonal in nature

IV <1.5 meter 2400 in dry season no navigability

Total 5968

Circular Waterways around Circular Waterways around DhakaDhaka

Total Length-110 km.

Already Completed:

Sadarghat to Ashulia (30 km); Dredging: 17.44 lakh m3.

To be Completed:

Ashulia to Kanchpur (40 km); Dredging: 34.73 lakh m3.

SadarghatSadarghat

AshuliaAshulia

KanchpurKanchpur

GENERAL PARTICULARSGENERAL PARTICULARS 25.79 m WATER TAXI 25.79 m WATER TAXI

Classification Society: GL Type: Small passenger vessel

Information of basis Information of basis shipship

MV TURAG & MV MV TURAG & MV BURIGANGABURIGANGA

LOA 11.85m LBP 11.7m B 3.50m D 1.40m T 0.65m Displacement 17.7 T L/B 3.34 B/T 5.38 D/T 2.15 Cb 0.60

DETERMINATION OF DETERMINATION OF PRINCIPAL PARTICULARSPRINCIPAL PARTICULARS

 ASSUMPTION: LOA/LBP = 1.05 LBP/B = 3.87 B/T = 4.20 D/T = 1.73 Cb = 0.6

Cd = 0.35

LBP 25.79/LBP =1.05 = 24.4 m

Breadth (B)24.4/B= 3.87 = 6.30 m

Draft (T)6.30/T = 4.20 = 1.5 m

Depth (D)D/1.5= 1.73 = 2.6 m

PRINCIPAL PARTICULARSPRINCIPAL PARTICULARS

Length Overall 25.79meter

LBP 24.4 meter Breadth (moulded) 6.3 meter Depth 2.6 meter Max. Draught(moulded) 1.5 meter (at full load)

DISPLACEMENT ESTIMATIONDISPLACEMENT ESTIMATION DEADWEIGHT (DWT) CALCULATION :

No of Person on board: No of passenger = 95

No of crew = 4Total = 99

Weight Allowance per person:Weight per person = 75 kg

Fresh water per person = 1 literLuggage = 5 kg

Total = 81kg Fuel needed per voyage: 500 liter Store + Allowance : 1000 kg Total Weight :(95*81) + (500*.80) + 1000 = 32.495 tonnes Cargo: (95*5)=0.475 tonnes Allowance : 10 tonnes Deadweight : Total weight + Cargo+Allowance = (32.495+.475+10)=42.97tonnes

DISPLACEMENT ESTIMATIONDISPLACEMENT ESTIMATION

LIGHT WEIGHT & DISPLACEMENT CALCULATION

Deadweight Coefficient :0.35(Assuming)

Displacement :

Lightship :

∆ = DWT / CD = (42.97 / 0.35) tonnes = 122.77 tonnes.

Light Weight = ∆ - DWT = ( 122.77 – 42.97) tonnes = 79.8 tonnes

LINES PLANLINES PLAN

BODY PLANBODY PLAN

HALF BREADTH PLANHALF BREADTH PLAN

PROFILE PLANPROFILE PLAN

GENARAL ARANGEMENT GENARAL ARANGEMENT DRAWINGDRAWING

MAIN DECKMAIN DECK

SPACE ALLOCATION SPACE ALLOCATION

Passenger Compartment(1st class)=7.885 m long

Passenger Compartment(2nd class)=4m long

Canteen = 5.197m longToilet = (1.757m × 2 no.)Navigation Room = 2.117m longCrews’ Rest Room = 2.250m×1.684m

HULL FORMHULL FORM

Hydrostatic Particulars

Water Plane Area Displacement KB BML

MCT 1m BMT

Block Coefficient, Cb

Midship section Coefficient, Cm

Prismatic Coefficient, Cp

Water plane Coefficient, Cw

Position of Center of flotation from amidship Longitudinal Position of Center of buoyancy

Formula used in hydrostatic calculation

Water plane Area : In our lines plane we take total 11 Station. Multiplying the half ordinate of each station

with the multipliers used in simpson’s first rule we find total product for area. Then,

Water plane area = 2 X hL/3 X total Product for area

Displacement : In our lines plane we take total 4 water lines. After finding different water plane area we use 5,8,-1 rule, simpson,s first rule & simpson’s second rule to find volume up to

different water line. As our ship is an Inland waterways ship so Displacement is equals to volume.

Volume up to water line 1 = 1/12 X hv X Total Product for volume (By using 5,8,-1 rule).

Volume up to water line 2 = 1/3 X hv X Total Product for volume

(Using Simpson’s First rule).

Volume up to water line 3 = 3/8 X hv X Total Product for volume

(Using Simpson’s Second rule).

Volume up to water line 4 = 1/3 X hv X Total Product for volume

Formula Used in Hydrostatic Calculation:Positions of Center of Buoyancy above keel ( KB ) :

KB = Moment of Volume Displacement above base / Volume up to

corresponding waterline

Positions of Longitudinal Metacenter (BML) :

BML = Moment of Inertia about center of flotation ( IL) / Displacement of

volume

Moment to Change trim 1m ( MCT 1m ) :

MCT 1m = (IL X Displacement in ton ) / (LBP X Displacement in volume)

Positions of Transverse Metacenter (BMT) :

BMT = Transverse Moment of Inertia / Moment of Volume.

Formula Used in Hydrostatic Calculation:Block Coefficient (CB):

CB = Displacement in Volume / (LBP X B X draught at

corresponding water plane.)

Midship Area Coefficient (Cm) :

Cm = Midship Section Area / (B X draught at corresponding

water plane.)

Prismatic Coefficient (Cp) :

Cp = CB / Cm

Water plane Coefficient (Cw) :

Cw = Water plane Area / (B X L at corresponding

water plane.)

Station WL-1 WL-2 WL-3 WL-4

0 2.282

0.5 0.134 1.759 2.474

1 0.061 0.958 2.256 2.628

1.5 0.585 1.941 2.494 2.771

2 1.443 2.312 2.686 2.865

3 2.209 2.722 2.909 3.016

4 2.571 2.922 3.077 3.127

5 2.644 3.034 3.142 3.150

6 2.024 2.696 2.992 3.132

7 0.946 2.039 2.606 2.889

8 0.503 1.149 1.817 2.289

8.5 0.338 0.760 1.243 1.783

9 0.188 0.436 0.771 1.188

9.5 0.063 0.178 0.341 0.621

10 0.025

OFFSET TABLE

Hydrostatic ParameterHydrostatic Parameter

Form CoefficientForm Coefficient

HYDROSTATIC CURVEHYDROSTATIC CURVE

Displacement

HYDROSTATIC CURVEHYDROSTATIC CURVE

Hydrostatic CurveHydrostatic Curve

Hydrostatic CurveHydrostatic Curve

Hydrostatic CurveHydrostatic Curve

Hydrostatic CurveHydrostatic Curve

Class & Regulations Class & Regulations followedfollowed

Classification• According to GL Rules & Guidance 2006 Regulations• SOLAS• Inland Shipping Ordinance (Passenger),2001.• Inland Shipping Ordinanace (Freeboard),2001 • IMO stability Guideline• The Inland Shipping Ordinance,1976.• Maritimes Regulations of Bangladesh.

Thank You Thank You