A wave piercing catamaran ferry
-
Upload
karim-kotb -
Category
Engineering
-
view
246 -
download
1
Transcript of A wave piercing catamaran ferry
![Page 1: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/1.jpg)
Supervised by :-
Prof. Dr./ Galal Younis
Dr. / Randa Ramadan & Dr. / Arwa Wafeek
Port Said UniversityFaculty of EngineeringN.A.M.E Department
Prepared by:-Karim Kotb Abed El-Salam Ahmed Yasser SolimanMohamed Ahmed RabeaMohamed Gamal HusseinRamy abed El-haaq Abo Harg
![Page 2: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/2.jpg)
Today with new technologies and modern transportation systems, speed and quantity of goods became the most important issues in
cargo and passenger transport.
Quantity puts ships into the first plan among all other
transportation facilities.
This project deals with main factors that should be taken in consideration to develop coastal express ferry in order to improve tourism and economy of Egypt as well as Saudi Arabia.
Abstract
![Page 3: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/3.jpg)
of This
• Transportation Systems • Ports characteristics • Existing routes• Characteristics of Catamarans• Ships in service• Parametric Study • Proposed formula of
Principal Dimensions• Lines, Hydrostatic • General Arrangement
Ch. One
• Aluminum alloys
• Welding processes
• Catamaran Construction
• Thickness for plating
• ordinary stiffeners• Primary Stiffeners
• Average annual of solar system
Ch. Two • Catamaran Resistance
• Powering of Catamaran
• Engine Selected
• Water Jet Propulsion System
• Marine solar system
Ch. Three
Ch. Four
• Calculation of weights from drawings
• Calculation of KG
• Cross curves of stability
• Stability criteria in the intact condition
• piping systems
![Page 4: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/4.jpg)
IntroductionRoutes&
PrincipalDimensions
1
![Page 5: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/5.jpg)
There are a number of performance characteristics that must be considered when selecting the appropriate mode of transportation.
Speed
Completeness
Dependability
Capability
Frequency
Cost
![Page 6: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/6.jpg)
Sea Transport
Air Transport
Land Transport
![Page 7: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/7.jpg)
The most important stage is to gather information on following decision variables:
• Ports characteristics • Existing routes and distances between ports• Ships in service • information from companies that operate in red sea • type of ships (depend on ship speed, port characteristics and
capacity) • dimensions of ships (depend on port characteristics, capacity,
weather conditions, and passengers’ comfort)
• capacity and number of passengers (depend on necessity of seaborne transport – depend on size of town and tourist capacities)
![Page 8: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/8.jpg)
Ports Characteristics ( COMMERCIAL PORTS IN EGYPT )
Egypt has 15 commercial ports facing the Mediterranean Sea and the Red Sea, (Table1.1). The Maritime Transport Sector (MTS) is responsible for the administration of those ports.
Red sea Port
Authority•Damietta
Port Authority
Port Said Port
Authority
Alex. Port Authority
Suez port, petroleum Dock port , Adabiya port ,
Sokhna port , Hurghada port , Safaga port , Eltor Port , Nuwaiba Port, Sharm El Sheikh port
Damietta Port
West Port Said port , East Port Said port ,El Arish port
Alexandria port , El Dekhila port
![Page 9: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/9.jpg)
![Page 10: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/10.jpg)
The best available port in Egypt to be used for our project ferry is Safaga port The port of Safaga is the most important Egyptian port to serve the Upper Egypt where the state to spend more than 4 billion pounds in the road network to link major cities in Upper Egypt (Qena- Sohag – Assiut ) .
Safaga port is located in the range of 250 km from these provinces.
Total area 57 km2
Land area 0.48 km2
Actual handling volume of passenger in 2009 800000 passenger Total no. of berths 3 Total length of berths 968 m Max water depth 14m
![Page 11: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/11.jpg)
From our point of view the available port in Saudi Arabia isYanbu port
Characteristics
Very near to Madinah (hajj season) The port has seven berths (1 — 7), along a 1,420- meter wharf including one container andone roll-on/roll-off (Ro/Ro) berth.
The access channel has been dredged to 14 meters belowthe lowest astronomical tide (LAT).
![Page 12: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/12.jpg)
![Page 13: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/13.jpg)
Definition of High speed Craft by (IMO)
The International Maritime Organization defined the High speed Craft as any Marine vehicle will satisfy the following definitions
Type of Ship used
![Page 14: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/14.jpg)
Catamaran Characteristics
![Page 15: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/15.jpg)
HULL SHAPES
Asymmetrical hull shapes. provided a minimum of additional resistance from the interference effects resulting from having two hulls in close proximity.
The sectional hull shapes are characterized into two types – round bilge and hard chine.
![Page 16: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/16.jpg)
• The hull beam (b) is usually the minimum width chosen to suit the chosen propulsion machinery layout.
• The vessel draft ( T ) may be determined by the immersion of the water jets and the associated machinery and transmission
• The block coefficient ( C B ) is typically chosen between 0.55 and 0.68
Generally the resistance will decrease as the hull separation is increased
![Page 17: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/17.jpg)
THE CENTRE BOWThe Centre Bow acts like ride control; it reacts with the waves earlierthan in conventional catamarans to reduce the motions earlier thanother vessels. It’s main purpose is to reduce the vessel pitchingmotions by offering extra buoyancy as the bow pitching into thewave.
![Page 18: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/18.jpg)
SpiralShip designer starts design with the Owner requirement specifications. For High speed RO-PAX catamarans the customer mainly concentrated on the hull definition payload & speed.
Preliminary estimation of the principle dimensions
In preliminary ship design two basic methodologies are used: • The first based on a parent ship • The second based on statistical data worked out from an
appropriate number of ships of the same type as the ship being designed.
The presented relations are derived from the collected data of a ten existing high speed Ro-Pax aluminum wave piercing catamarans ferries with similar characteristics.
![Page 19: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/19.jpg)
![Page 20: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/20.jpg)
![Page 21: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/21.jpg)
![Page 22: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/22.jpg)
![Page 23: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/23.jpg)
![Page 24: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/24.jpg)
![Page 25: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/25.jpg)
![Page 26: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/26.jpg)
![Page 27: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/27.jpg)
![Page 28: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/28.jpg)
Preliminary estimation of the principle dimensions
![Page 29: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/29.jpg)
PlanLines plan drawing is the first information that needs to be made available. Without lines plan drawing, no calculation, design and analysis works can be performed
The ship is subdivided into 49 station (from station no. ( 0 ) at AP to station (40)In the fore the interval between the stations becomes narrower so its number increased St 0, St 1 , St 2 , …………. St 32 The interval is 2.34 m St 32, St 32.5, St 33 ,…… St 40 The interval is 1.17 m
![Page 30: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/30.jpg)
The ship is Divided into 21 Waterline the distance between each is 0.7 m There are six buttock lines at distance shown from The Centerlineb 1 0.0 b 2 3.0b 3 7.3b 4 9.4b 5 11.1b 6 12.8
![Page 31: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/31.jpg)
![Page 32: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/32.jpg)
![Page 33: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/33.jpg)
![Page 34: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/34.jpg)
The ferry is capable of carrying up to 1050 passenger and 200 cars in three tiers the upper tier contains seats for 550 passenger and Central market shop And small ten accommodation rooms for crew with 5 bathrooms And sofa for crew meetings
The Second tier is separated to two main parts the fore part for carrying cars up to 50 cars and the aft part is for passenger capable for carrying up to 490 passenger and 12 bathroom for men and the same number for ladies of total 24 bathroom There is a VIP room of total 19 seats The garage is capable of carrying 125 car and up to 4buses
![Page 35: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/35.jpg)
Hydrostatics
All the geometric properties of a ship as a function of mean draft have been computed and put into a single graph for convenience.
At Draft 3.5 m
• Disp. = 1846 ton • LCB = 38.6 m • LCF = 37.6 • BMt = 41.9 m • BMl =170.7 m • GMt =40.3 • GMl = 169.1 m • KMt = 43.8 • KMl = 172.6
![Page 36: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/36.jpg)
![Page 37: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/37.jpg)
Curves of Form Coefficient
![Page 38: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/38.jpg)
Bonjean Curves
Bonjean curves show the relationship between local draft and submerged cross-sectional area At each station we can draw a bonjean curve of the x-section area
Bonjeans are drawn on the profile of the vessel. With these curves, we can find the distribution of buoyancy for any waterline (any draft, any trim).
![Page 39: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/39.jpg)
References
![Page 40: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/40.jpg)
Welding
Construction
Alloys
Aluminum Marine Structure
2
![Page 41: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/41.jpg)
Aluminum is a strong, durable and lightweight metal. these three basic properties combine to make the metal as the preferred material of construction for transport applications, to reduce fuel consumption and to increase the load carrying capacity.
Marine engineers and naval architects recognize aluminum as an advantageous material in shipbuilding. The lightweight, mechanical properties, and corrosion resistance of aluminum alloys has dictated their use in many of these applications.
Introduction
![Page 42: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/42.jpg)
![Page 43: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/43.jpg)
![Page 44: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/44.jpg)
![Page 45: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/45.jpg)
![Page 46: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/46.jpg)
![Page 47: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/47.jpg)
![Page 48: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/48.jpg)
![Page 49: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/49.jpg)
![Page 50: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/50.jpg)
![Page 51: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/51.jpg)
![Page 52: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/52.jpg)
![Page 53: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/53.jpg)
Catamaran construction After we have known a lot of information about the strength and thematerial used in building in the catamaran, so we can know by thelogic of designer engineer to calculate according the GL rule:-
![Page 54: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/54.jpg)
![Page 55: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/55.jpg)
P = 411.23 KN/mm2 The bottom thickness = 12 mm
The impact pressure [kPa] acting on the bottom wet deck (cross deck)
HS is the significant wave height HA (air gab)
90.03 KN/ mm2 P =The thickness of bottom of wet deck of catamaran = 6 mm
![Page 56: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/56.jpg)
![Page 57: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/57.jpg)
![Page 58: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/58.jpg)
![Page 59: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/59.jpg)
![Page 60: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/60.jpg)
![Page 61: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/61.jpg)
![Page 62: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/62.jpg)
![Page 63: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/63.jpg)
![Page 64: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/64.jpg)
![Page 65: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/65.jpg)
![Page 66: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/66.jpg)
![Page 67: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/67.jpg)
![Page 68: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/68.jpg)
![Page 69: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/69.jpg)
![Page 70: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/70.jpg)
Resistancepowering&
Solar System
3
![Page 71: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/71.jpg)
Resistance
In general the resistance of catamarans attributed to two major components viscous resistance and wave-making resistance. In addition to air resistance
RT = (1+𝒌) Rf + RW + 𝐑AWhere,
RT Total resistance (KN )(1+ k ) The catamaran form factor Rf Frictional resistance RW Wave- making resistance KN RA Air resistance
In our project we will calculate the total power of the catamaran using three different ways, compare the results and choose the biggest one
![Page 72: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/72.jpg)
First method ( Armstrong 2000 )
Viscous resistance
A main resistance component is caused by the friction force on the wetted hull.
The viscous resistance may be obtained from RV = (1+k) Rf
Where,
RV Viscous resistance KN Rf frictional resistance KN (1+ k) the catamaran form factor
There have been several studies into the calculation of the form factor (1+k) including work by Armstrong (2000), Molland et al (1994)
![Page 73: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/73.jpg)
![Page 74: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/74.jpg)
![Page 75: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/75.jpg)
![Page 76: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/76.jpg)
Wave making resistance
![Page 77: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/77.jpg)
![Page 78: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/78.jpg)
![Page 79: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/79.jpg)
![Page 80: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/80.jpg)
![Page 81: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/81.jpg)
![Page 82: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/82.jpg)
![Page 83: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/83.jpg)
Air resistance
![Page 84: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/84.jpg)
![Page 85: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/85.jpg)
Powering of Catamaran
![Page 86: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/86.jpg)
![Page 87: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/87.jpg)
The maximum value of jet efficiency is observed to occur at high velocity ratio. Thus, to achieve high efficiency, a large jet diameter should be selected
![Page 88: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/88.jpg)
![Page 89: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/89.jpg)
![Page 90: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/90.jpg)
![Page 91: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/91.jpg)
![Page 92: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/92.jpg)
![Page 93: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/93.jpg)
![Page 94: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/94.jpg)
RESULTS
![Page 95: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/95.jpg)
Engine options for powering large fast Ro-Pax craft have been examined. Only engine powers in excess of 4000kW per single engine have been considered.
![Page 96: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/96.jpg)
![Page 97: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/97.jpg)
![Page 98: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/98.jpg)
Water Jet Propulsion System
Water jet is a propulsion unit connected to the engine and used instead of propeller shaft.
It allows the boat to move forward by sucking in water from under the bottom of the boat and discharging from the stern.
To move backward, the direction of water is changed with the bucket covered.
![Page 99: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/99.jpg)
Waterjet propulsion systems consist of
• An inlet duct which guides water into the pump,• An engine-driven impeller to raise the water pressure,• A jetavator which can deflect the jet stream sideways to create
a steering action.
![Page 100: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/100.jpg)
Operation
Water enters the waterjet installation through the inlet duct, which is a part of the ships construction.After passing the pump impeller, rotation in the flow is removed and the water is accelerated in the stator bowl. This creates the thrust necessary to propel the ship. Each waterjet is driven by a main engine through a gearbox with a clutch.
The clutch makes it possible to start the prime mover without turning the shaft.
![Page 101: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/101.jpg)
Waterjet thrust
We can calculate the waterjet thrust when entrance speed (vi), exit speed (vj) and volume flow are knownFor example
An average entrance speed (vi) into the jet at 20 m/s, an exit speed (vj) at the nozzle of 40 m/s and a volume flow (v) of 3 m3/s. From the volume flow and the specific density of sea water, the mass flow through the system is calculated
• 3 m3/s x 1025 kg/m3 = 3075 kg/s
• F= 3075 (40-20) = 61000 N or 61 kN
![Page 102: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/102.jpg)
Waterjet Size Selection
Figure is used to select the proper waterjet size when the installed power per jet is known.
Power factor = 1.48
![Page 103: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/103.jpg)
![Page 104: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/104.jpg)
To reduce weight of the waterjet system, aluminum is chosen for the construction of several components.
![Page 105: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/105.jpg)
![Page 106: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/106.jpg)
Major features of [Waterjet]
• Waterjet allows the boat to run in shallow water.• Since the propulsion unit does not project from the bottom of
boat, the possibility that it gets damaged due to contact with obstacles on the sea bottom or driftage on the sea surface is reduced
• Complete safety.• Maneuvering with a deflector instead of a rudder enables the
boat to turn in a small circle or at the spot
• Waterjet is superior to propeller in efficiency and performance at high speeds.
• Water jet is placed at the rear of the engine and propulsion unit, providing space in the center of the body.
![Page 107: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/107.jpg)
![Page 108: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/108.jpg)
Solar SystemInto a green ship
![Page 109: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/109.jpg)
Egypt is located in the world’s solar belt and has excellent solar energy availability. Therefore, the aim of the present work is to present a case study for installing a photovoltaic solar system onboard the wave piercing catamaran ferry between Egypt and Saudi Arabia.
Due to the depleting nature of Egypt's limited fuel resources, the development of renewable energy technologies has proven to be essential.
The annual average total solar radiation over Egypt ranges from about 1950 kWh/m2/year on the Mediterranean coast to more than 2600 kWh/m2/year in Upper Egypt.
![Page 110: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/110.jpg)
![Page 111: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/111.jpg)
![Page 112: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/112.jpg)
![Page 113: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/113.jpg)
Cost of PV solar system
The life time (N) for all items is considered to be 20 years, except that of the battery which is considered to be 10 years. Thus, another group of batteries have to be purchased after 10 years
![Page 114: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/114.jpg)
![Page 115: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/115.jpg)
Number of PV solar panels
![Page 116: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/116.jpg)
Number of charge controllers
![Page 117: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/117.jpg)
Number of solar batteries
![Page 118: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/118.jpg)
![Page 119: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/119.jpg)
![Page 120: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/120.jpg)
![Page 121: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/121.jpg)
![Page 122: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/122.jpg)
![Page 123: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/123.jpg)
![Page 124: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/124.jpg)
![Page 125: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/125.jpg)
![Page 126: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/126.jpg)
Weight Calculation
Stability
4&
![Page 127: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/127.jpg)
The most common approach is to assign drawings to a weight engineer for weight determination after they have been issued
The calculation of weight from detail drawings represents the highest level offidelity possible in the determination of weight for a ship
Weight Calculation
![Page 128: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/128.jpg)
WM /WL = 11- 18 %
Length from 85 to 120 m DWT / Displacement = 20 -40 % WST / WL = 56 -66 %
Wof /WL = 23 – 28 %
![Page 129: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/129.jpg)
Firstly, for plates of the ship
![Page 130: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/130.jpg)
![Page 131: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/131.jpg)
For bridge stiffener Using bulb (80*5)
For weather deck stiffener Using bulb (80*6)
For Tier 2 stiffener Using bulb (80*6)
For Garage Stiffener Using bulb (140*7)
For wet deck Stiffener Using bulb (140*7)
For wetted surface area Stiffener Using bulb (240*10)
For stiffener of side above LWL
![Page 132: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/132.jpg)
Weight of transverse Bulkheads =10.9 ton
![Page 133: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/133.jpg)
![Page 134: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/134.jpg)
![Page 135: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/135.jpg)
![Page 136: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/136.jpg)
![Page 137: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/137.jpg)
![Page 138: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/138.jpg)
To Calculate KG
![Page 139: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/139.jpg)
![Page 140: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/140.jpg)
![Page 141: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/141.jpg)
![Page 142: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/142.jpg)
![Page 143: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/143.jpg)
![Page 144: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/144.jpg)
![Page 145: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/145.jpg)
Cross curves of stabilityThe cross curves of stability provide a means of presenting stability for a wide range of displacements, heeling angles and an initial trim, not only in still water but also in waves.
![Page 146: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/146.jpg)
![Page 147: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/147.jpg)
![Page 148: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/148.jpg)
![Page 149: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/149.jpg)
Introduction
The piping systems installed on shipboard to serve the engine from a complicated network .the pipe network supports all engine functions and operating processes
![Page 150: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/150.jpg)
The lubricating oil piping system The main objectives are • Provide an oil film between the moving parts of the engine to
reduce the friction • Cooling the moving parts of the engine • Keep the inside parts of the engine clean
Lubricating oil system diagram In general the system consist of pumps , filters , coolers / heaters, strainers, separators (clarifier/ purifier ), tanks and valves , and measurements instruments
Oil tanks are made of steel or black iron. Brass, copper and galvanized metal are avoided as copper and zinc increase the tendency of oil to be oxidize.
![Page 151: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/151.jpg)
![Page 152: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/152.jpg)
![Page 153: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/153.jpg)
![Page 154: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/154.jpg)
![Page 155: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/155.jpg)
![Page 156: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/156.jpg)
![Page 157: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/157.jpg)
![Page 158: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/158.jpg)
![Page 159: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/159.jpg)
![Page 160: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/160.jpg)
If the pump is required to rise the liquid from lower tank to upper tank, besides H, it must overcome the resistance in both suction and delivery pipes
![Page 161: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/161.jpg)
![Page 162: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/162.jpg)
![Page 163: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/163.jpg)
![Page 164: A wave piercing catamaran ferry](https://reader033.fdocuments.us/reader033/viewer/2022051101/58e53de91a28ab18318b4e95/html5/thumbnails/164.jpg)
All References are under Request…