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Lecture 4.pptx

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Training Center of Seafarers AVANT © STC AVANT 2014 PREPARED BY S. KUZNETSOV Training Center of Seafarers AVANT © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Oil Tankers Hull Structure Breakdown Introduction, AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Oil Tankers Hull Structure Breakdown Introduction, Characteristic & Sizes of Oil Tankers Hull Construction Types of Oil Tankers © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com ULCC Jahre Viking © STC AVANT AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com ULCC Jahre Viking © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Characteristics of Oil Tankers: High AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Characteristics of Oil Tankers: High number of tanks – good capability of survival Low freeboard, green seas on deck Pollution / public attention / fire explosion hazards Fatigue Liquid cargo – sloshing in wide tanks and stability aspect Hull inspection environment • Fully utilizes BM limits hogging / sagging (double hull tankers) • • • © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Size Categories of Oil Tankers: AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Size Categories of Oil Tankers: • • • Products (10 – 50, 000 DWT) Panamax (55 – 75, 000 DWT) Aframax (75 – 120, 000 DWT) Suezmax (120 – 200, 000 DWT) VLCC (200 – 320, 000 DWT) ULCC (320, 000 > DWT) © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – no CL AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – no CL Bulkhead Older design © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – no CL AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – no CL Bulkhead Ship data: L = 218 m B = 32, 2 m D = 19, 7 m 63, 765 DWT © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Single Bottom with Side Ballast AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Single Bottom with Side Ballast Tanks Built in the 80’s, considered as 'single skin' © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Single Bottom With Side Ballast AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Single Bottom With Side Ballast Tanks Ship data: L = 236 m B = 42 m D = 19, 2 m 88, 950 DWT © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – CL Longitudinal AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – CL Longitudinal Bulkhead Common Aframax and Suezmax design of today © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – CL Longitudinal AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – CL Longitudinal Bulkhead Ship data: L = 264 m B = 48 m D = 23, 2 m 159, 681 DWT © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Single Skin Oil Tankers Old AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Single Skin Oil Tankers Old design, build up to 1993 © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Single Skin Oil Tankers Ship AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Single Skin Oil Tankers Ship data: L = 310 m B = 56 m D = 31, 4 m 284, 497 DWT © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – Two Longitudinal AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – Two Longitudinal Bulkheads Common VLCC design of today © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – Two Longitudinal AVANT Introduction TRAINING CENTER OF SEAFARERS www. tsavant. com Double Hull – Two Longitudinal Bulkheads Ship data: L = 320 m B = 58 m D = 26, 8 m 298, 731 DWT © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Oil Tankers Hull Elements (Side, bottom, AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Oil Tankers Hull Elements (Side, bottom, deck, transverse bulkhead, longitudinal bulkhead, web frames) © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Elements Deck Ship AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Elements Deck Ship side Webframes Longitudinal bulkhead Bottom © STC AVANT 2014 Transverse bulkhead PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. Bottom 3. Deck 4. Transverse bulkhead 5. Longitudinal bulkhead 6. Webframes © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT 2013 19 AVANT 2013 19

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Side: AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Side: 1. Watertight integrity - take up external sea loads and transfer these into the hull girder; - resist internal pressure from cargo and ballast; 2. Web in hull girder - side plating act as the web in the hull girder beam. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Build Up of AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Build Up of Ship Side – Single Skin Tanker Side plating with longitudinals Transverse bulkhead Cross ties Stringers Web frame © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of a AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of a Double Hull Ship Side plating with longitudinals Inner side plating with longitudinals Stringers Web frame © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. Bottom 3. Deck 4. Transverse bulkhead 5. Longitudinal bulkhead 6. Webframes © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Bottom: AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Bottom: 1. Watertight integrity - resist external sea pressure; - resist internal pressure from cargo and ballast; 2. Flange in hull girder - bottom plating and longitudinals act together as the lower flange in the hull girder beam. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Single AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Single Skin Tanker Bottom CL girder Bilge Bottom platings with longitudinals © STC AVANT 2014 Keel plate Web frame PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of a AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of a Double Bottom Structure Hopper platings with longitudinals Hopper web plating Outboard (margin) girder Bottom platings with longitudinals © STC AVANT 2014 Inner bottom plating (tank top) with longitudinals Buttress CL double bottom girder Transverse girder floor PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. Bottom 3. Deck 4. Transverse bulkhead 5. Longitudinal bulkhead 6. Webframes © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Deck: AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Deck: 1. Flange in hull girder - deck plating and longitudinals act as the upper flange in the hull girder beam. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Deck AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Deck – Single Skin Tanker Transverse deck girder / Web frame © STC AVANT 2014 Deck plating with longitudinals Deck CL girder PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. Bottom 3. Deck 4. Transverse bulkhead 5. Longitudinal bulkhead 6. Webframes © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Transverse AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Transverse Bulkhead: 1. Watertight integrity - resist internal pressure from cargo and ballast (cargo boundary); - safety against collapse if water ingress (boundary for flooding); 2. Hull girder stiffness - transverse bulkhead is an important contributor to the hull girder transverse stiffness. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Build-up of Transverse AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Build-up of Transverse Bulkhead Stringers Transverse bulkhead plating with stiffeners © STC AVANT 2014 Buttress PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. Bottom 3. Deck 4. Transverse bulkhead 5. Longitudinal bulkhead 6. Webframes © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Longitudinal AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Longitudinal Bulkhead: 1. Watertight integrity - resist internal pressure from cargo and ballast (cargo boundary); - safety against collapse if water ingress (boundary for flooding); 2. Web in hull girder - contributes to hull girder longitudinal stiffness. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Build-up of Longitudinal AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Build-up of Longitudinal Bulkhead Web frame Cross ties Longitudinal bulkhead plating with stiffeners © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown 1. Side 2. Bottom 3. Deck 4. Transverse bulkhead 5. Longitudinal bulkhead 6. Webframes © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Structural Functions of Webframes: 1. AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Structural Functions of Webframes: 1. Web frames are supports for the longitudinal stiffeners 2. Web frames contributes to the hull girder transverse strength © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Web AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Web Frame Web frame flange Web frame Cross tie © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Nomenclature for a Typical AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Nomenclature for a Typical Double Hull Oil Tanker © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Bulk Carriers Hull Structure Breakdown Introduction, AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Bulk Carriers Hull Structure Breakdown Introduction, Characteristic & Sizes of Bulk Carriers Hull Construction Types of Bulk Carriers © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com VLBC Berge Stahl © STC AVANT AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com VLBC Berge Stahl © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Characteristics of Bulk Carriers: • AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Characteristics of Bulk Carriers: • • • Single skin / hopper & top-wing tanks Heavy cargoes Large net load on double bottom High shear stresses shell side Sensitive to leakage - total structural loss High loading rate Transverse strength Green seas Not much public attention (no vetting) Low survival capability when flooded High number of vessels lost © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Reduced flexibility Bulk Carrier Loading AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Reduced flexibility Bulk Carrier Loading Flexibility: • Bulk Carrier HC/EA - any hold empty at full draught • Bulk Carrier HC/E – hold 2, 4, 6 … Empty - given combination of holds empty at full draught • Bulk Carrier HC - any hold empty at 80% of full draught • Bulk Carrier - any hold empty at 60% of full draught © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Size Categories of Bulk Carrier: AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Introduction Size Categories of Bulk Carrier: • • • Mini (< 10, 000 DWT) Small (10, 000 - 25, 000 DWT) Laker (20, 000 - 27, 000 DWT) Handysize (25, 000 - 40, 000 DWT) Handymax (40, 000 - 60, 000 DWT) Panamax (60, 000 - 100, 000 DWT) Post-Panamax (80, 000 - 120, 000 DWT) Capesize (100, 000 - 200, 000 DWT) VLBC (Very Large Bulk Carrier) (200, 000 > DWT) © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Bulk Carriers Hull Elements (Side, bottom, AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Bulk Carriers Hull Elements (Side, bottom, deck, transverse bulkhead, longitudinal bulkhead, web frames) © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Elements Hatch coaming AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Elements Hatch coaming & cover Deck Transvers e bulkhead Side Topside tank Bottom © STC AVANT 2014 Hopper tank PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side 1. Bottom 2. Deck 3. Transverse bulkhead 4. Hopper tank 5. Topside tank 6. Hatch cover & coaming 7. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Side: AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Side: 1. Watertight integrity (local strength bottom / inner bottom) - resist external sea pressure; - resist internal pressure from cargo and ballast; 2. Web in hull girder (global strength) - side plating act as the web in the hull girder beam. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Ship AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Ship Side Upper bracket Side plating Side frames Lower bracket © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side 1. Bottom 2. Deck 3. Transverse bulkhead 4. Hopper tank 5. Topside tank 6. Hatch cover & coaming 7. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Bottom: AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Bottom: 1. Watertight integrity (local strength bottom / inner bottom) - resist external sea pressure (bottom); - resist internal pressure from cargo / ballast & fuel oil; 2. Carry net load on double bottom girder structure - inner bottom / bottom plate & stiffn. are girder flanges; - double bottom floors / girders are webs in double bottom; 3. Bottom flange in hull girder (global strength) - bottom and inner bottom structure is the bottom flange in the hull girder. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Bottom AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Bottom Longitudinal girders Floor © STC AVANT 2014 Pipe tunnel PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side 1. Bottom 2. Deck 3. Transverse bulkhead 4. Hopper tank 5. Topside tank 6. Hatch cover & coaming 7. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Deck: AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Deck: 1. Watertight integrity (local strength) - resist external sea pressure. 2. Transverse strength of the hull girder 3. Upper flange in hull girder (global strength) © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Deck AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Deck Transverse hatch coaming Longitudinal hatch coaming Deck between hatches Deck webframe Main deck outside line of hatches © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side 1. Bottom 2. Deck 3. Transverse bulkhead 4. Hopper tank 5. Topside tank 6. Hatch cover & coaming 7. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Transverse AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Transverse Bulkhead: 1. Cargo hold boundary (local strength) - resist internal pressure from cargo / ballast; - resist water flooding. 2. Transverse strength of the hull girder © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Transverse AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Transverse Bulkhead Upper stool Corrugated bhd. Lower stool diaphragm Hatch coaming bkt. Shedder plate Lower stool diaphragm © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side 1. Bottom 2. Deck 3. Transverse bulkhead 4. Hopper tank 5. Topside tank 6. Hatch cover & coaming 7. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Hopper AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Hopper Tank: 1. Cargo hold boundary (local strength) - resist internal pressure from cargo / ballast; - resist sea pressure on ship side; 2. Give support for side structure and double bottom 3. Web in hull girder (global strength) - side plating / hopper tank sloping plate are part of the web in the hull girder beam; - hopper tank bottom plate and lower part of side plate are part of the bottom flange in the hull girder. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Hopper AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Hopper Tank Hopper tank slopping plate Bottom side girder outboard Vertical side frame supporting bkt. Hopper transverse web frame Hopper tank side plate Bilge plate © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side 1. Bottom 2. Deck 3. Transverse bulkhead 4. Hopper tank 5. Topside tank 6. Hatch cover & coaming 7. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Topside AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Topside Tank: 1. Cargo hold boundary (local strength) - resist internal pressure from cargo / ballast; - resist sea pressure on ship side; 2. Give support for side structure and hatch coaming 3. Web in hull girder (global strength) - side plating / top-wing tank sloping plat are part of the web in the hull girder beam; - topside tanks upper part is part of the upper flange in the hull girder beam. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Topside AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Topside Tank Topside tank side plate with longitudinals Deck plating with longitudinals Topside tank vertical strake Vertical side frame supporting bkt. upper © STC AVANT 2014 Transverses webframe Topside tank sloping plate with longitudinals PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Breakdown Side 1. Bottom 2. Deck 3. Transverse bulkhead 4. Hopper tank 5. Topside tank 6. Hatch cover & coaming 7. © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Hatch AVANT TRAINING CENTER OF SEAFARERS www. tsavant. com Hull Structure Structural Functions of Hatch Cover & Coaming: 1. Watertight integrity (local strength) - resist dynamic loads from green seas, horizontal & vertical pressure 2. Hatch coaming supports the hatch covers 3. Hatch end coaming contributes to transverse strength © STC AVANT 2014 PREPARED BY S. KUZNETSOV

AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Hath AVANT Hull Structure TRAINING CENTER OF SEAFARERS www. tsavant. com Structural Build-up of Hath Coaming Hatch end bracket Hatch end coaming, web & flange Hatch side bracket Longitudinal hatch coaming, web & flange © STC AVANT 2014 PREPARED BY S. KUZNETSOV