RO-PAX FERRY April 28 th, 2016 Gabriel, Shaun, Timothy
Introduction ROPAX Ferry Concept Design for WFSA competition Low-cost vessel for service between the islands of Indonesia
Ferry Accidents China 6% Indonesia 16% Philippines 11% All others 42% Bangladesh 25% Causes and Circumstances of Major Ferry Accidents, 2000-2014, by Abigail Golden, Worldwide Ferry Safety Association.
Location Pelni - Wikipedia, the free encyclopedia. (n.d.). Retrieved January 22, 2016, from https://en.wikipedia.org/wiki/pelni
Basic Requirements 14 to 18 knots Maximum 185 passengers Maximize car and truck payload 20 Cabins Range of 1000 Nm Affordable to construct and operate ROPAX ferry 2007 http://indahnesia.com/indonesia/event/ 45/ferry_sinks_off_java_coast.php
Challenges: Safety Overloading Fire Safety Affordability Indonesian Ferries Paul's Travel Blog. (n.d.). Retrieved from http://www.paulstravelblog.com/wp/?p=260
Problems: Overloading Fire Affordability Solutions: Catamaran design Limited number of trucks Well ventilated car deck Engines on deck Fire zones Catamaran (more deck area) Steel construction Ease of maintenance Built in Indonesia
Parent Ship: North Island Princess
Hull Form VWS 89 Waterline Length: 52.5 m Displacement: 1025 tonnes Based on NPL, VWS 89 Design speed of 15 knots NPL Savu Ferry
Catamaran Hull Form L/V^(1/3) = 6.67 Cp = 0.6 Cb = 0.5 BOA = 23.5m LOA = 55m LCB = -6.5% midships Single Chine
Stability SOLAS IS 2008 General Criteria for 4 conditions: Fully loaded arrival/departure Unloaded arrival/departure Wind Criteria
Intact Stability Results Stability Criteria - IS 2008, Open Water Criteria for Fully loaded departure Name Angle 1 Angle 2 Required Actual Pass / Fail GM At 0 > 0.15 meters 0 0.15 39.4 Pass GZ At 30 >= 0.2 meters 30 0.2 6.3 Pass Angle At GZmax > 25 deg 14.5 25 14.5 Fail Area Between 0 and 30 > 3.15 metersdeg Area Between 0 and Flood > 5.15 meters-deg Area Between 30 and 40 > 1.72 metersdeg 0 30 3.15 175.3 Pass 0 22.7 5.15 126.3 Pass 30 40 1.72 57.8 Pass
GZ (m) Righting Arm Curve 8.0 6.0 4.0 2.0 0.0-20 -15-10 -5 0 5 10 15 20 25 30 35 40-2.0-4.0-6.0-8.0 Angle of Heel (Degrees)
Damaged Stability Lost Buoyancy Method
Damaged Stability Results Stability Criteria - SOLAS 2004, After Damage, compartments C and D flooded Name Angle 1 Angle 2 Required Actual Pass / Fail Angle Between FreeEquil and GZ0 >= 15 deg Area Between FreeEquil and 27 >= 0.86 meters-deg 3.3 74.9 15.0 71.5 Pass 3.3 27 0.9 107.3 Pass GZ At GZmax >= 0.29 meters 21.6 0.3 6.1 Pass Angle At FreeEquil <= 12 deg 3.3 12.0 3.3 Pass Freeboard At FreeEquil >= 0.076 meters 3.3 0.1 1.8 Pass
Resistance and Powering NPL Model testing Round bilge, displacement VWS 89 Model testing Chined, planing Pham and Sahoo Regression Analysis Chined Engines selected based on: 1500 kw Effective Power
Transportation Factor Transport Factor: Reality Check 60 Transportation Factor for Similar Ferries (ROPAX Catamarans) 50 40 30 20 10 0 5 10 15 20 25 30 35 40 Speed (kn)
Ship Arrangement Capacity, flow, and passenger safety Mission requirements for each deck Cars/trucks Stairwells, access Accommodations Service spaces Seating WC s
Profile
Inboard Profile
Midship
Main Deck
Deck 2
Deck 3
Machinery Arrangement
Structure: Design Methodology Lloyd s Register Rules and Regulations for Classification of Special Service Craft Material Selection Hydrostatic, Hydrodynamic pressure etc. Local Design Pressure Local Members (plating&stiffener) Global Loads Hull Girder Strength
Structure: Local Design Pressures Wave Pressure/Impact Pressure hydrostatic pressure 28.14 hydrodynamic pressure 57.66 pitching pressure 79.70 Impact pressure 64.74 deckhouse, superstructure pressure 7.04 shell envelope pressure 107.84 forebody impact pressure 64.74 Impact pressure on crossdeck 22.76 pressure on weather deck 12.40 deck pressure for cargo 25.16 watertight bulkhead, plating 28.25 watertight bulkhead, stiffener 35.21 Local Member Design Pressure Design Pressure kpa bottom shell plating 113.23 bottom shell stiffening 56.61 side shell plating, outboard 113.23 side shell stiffening, outboard 56.61 side shell plating, inboard 113.23 side shell stiffening, inboard 56.61 cross-deck plating 83.68 cross-deck stiffening 41.84 weather deck plating 25.16 weather deck stiffening 25.16 interior deck plating 25.16 interior deck stiffening 25.16 inner bottom plating 88.68 inner bottom stiffening 56.61 superstructure plating 7.39 superstructure stiffening 3.69 bulkhead plating 28.25 bulkhead stiffener 35.21
Structure: Local Plating Thickness Minimum thickness Design selection Shell envelope bottom shell plating 9.9 10 side shell plating 9.9 10 wet-deck plating 8.5 10 Single Bottom structure centre girder web 6.7 8.0 floor webs 5.1 8.0 side girder webs 6.1 8.0 Bulkheads watertight bulkhead plating 4.8 5 Deck plating strength/main deck plating 8.5 10 lower deck/inside deckhouse 5.2 10 Superstructures and deckhouses superstructure side plating 3.1 5 superstructure top plating 3.0 5 machinery casing side plating 3.0 5 Pillars rectangular pillars 5.0 5
Structure: Global Loads Vertical Wave Bending Moment Twin-hull Transverse Bending Moment Twin-hull Torsional Moment Twin hull transverse bending moment 26,184 knm Twin hull torsional connecting moment 40,389 knm
Structure: Hull Girder Strength Hull Longitudinal Bending Strength Hull Girder Bending Stress Deck Keel 24.1 51.9 max permissible hull vertical bending stress, MPa 169 Hull Shear Strength Hull Girder Shear stress, MPa < < 5.7 max permissible mean shear stress, MPa 98 Strength of Cross-deck Structure Head sea Beam sea Quartering sea total direct bending stress 32.8 50.6 61.6 total shear stress 2.5 8.2 21.4 < Cross-deck max permissible vertical bending stress 169 max permissible mean shear stress 98 Demand Capacity
Structure: Midship Section Frame spacing Max. web frame spacing 550 mm 3.3m
Propulsion: Pairwise Comparison
Propulsion: Selection
Propulsion: Unit 4 X Schottel Outboard units CAT ACERT 32 746 kw each
Weight Engineering Light Ship Summary Weight (MT) LCG VCG TCG L.Mom V.Mom T.Mom 100 - Structure 434.1 30.1 5.6 0.0 13072678 2418781 0 200 - Propulsion 74.3 52.9 7.9 0.0 3929600 588100 0 300 - Electrical 31.0 34.2 6.8 0.0 1059600 209223 0 400 - Command 3.4 21.9 13.9 0.0 74325 47275 0 500 - Aux Equipment 44.8 24.5 8.4 0.0 1097640 374820 0 600 - Outfit 52.2 32.0 7.1 0.2 1668768 370710 9944 MARGIN (5%) 32.0 671.7 31.1 6.0 0.0 20903 4009 9.944
Outfitting estimates Outfitting weights QTY Length, m height, m kg/u t/m2 Weight, t Cabin floor 0.0335 6.85 ceilings 0.007 1.43 Corridor floor 0.0335 4.22 ceilings 0.007 0.88 Bathroom floor 0.0335 1.00 ceilings 0.007 0.21 Balcony floor weight 0.0335 0.89 Non structural bulkheads 193.5 2.75 0.01 5.32 Interior Stairs 12 50 0.60 Interior Railings 30.8 10 0.31 Interior doors 20 50 1.00 Exterior doors (to balconies) 8 130 1.04 Bunk Beds 56 50 2.80 Vanity unit 20 25 0.50 Chair + desk 20 20 0.40 Toilet Stalls 4 40 0.16 Bathroom washbasin 4 25 0.10 Showers 4 25 0.10 Total PAX accomodation outfit weight TONNES: 27.8
Full Load Summary Full Load Displacement Summary Weight (MT) LCG VCG TCG L.Mom V.Mom T.Mom Consumables Fuel (98%) 39 32 2 0 1258 64 0 Potable Water (98%) 20 26 2 8 500 32 162 Passengers, Crew, and Stores Passengers + Crew 12 25 11 0 300 131 0 Crew Stores (15 crew) 1 23 4-7 17 3-5 Passenger stores (185 pax) 3 31 10 0 85 26 0 Misc. Liquids Grey Water (10%) 2 24 2 0 37 3 0 Black Water (10%) 1 23 2 10 14 1 6 Lube Oil (98%) 2 38 2 0 69 4 0 Used Oil (10%) 0 38 2 0 2 0 0 Sludge (10%) 0 39 2 0 4 0 0 Oily Water (10%) 1 38 2 0 19 1 0 Mission Load Cars, x 34 58 25 7 0 1457 376 0 Trucks (Fully loaded) x 10 200 28 7 0 5560 1320 0 Total Deadweight 337 28 6 0 9321 1962 163 Lightship Weight 671.7 31.1 6.0 0.0 20902.6 4008.9 9.9 LCG VCG TCG Estimated FULL LOAD DISPLACEMENT 1008.3 30.0 5.9 0.2 30223 5971 173
Cost: Shipyard s Perspective Is it affordable?
Cost: Cash Flow Analysis
Appendix