marine , underwater,offshore ,dredging,barges,drilling vessels,jack up barges,rov;s,coastal construction,oil rig installation equipment s,derrick barge,sheerleg barge,advanced construction methods,marine environment,harbor construction,offshore wind farm, jacket for oil rig,semi submersible barges,launch barges,anchor handling barges, basic motions in a sea way, floating concrete plant,clam shell ,dragline,hydraulic suction, continuous or ladder type dredge,suction hopper , vessels

1. MARINE AND OFFSHORE
CONSTRUCTION EQUIPMENT
FABIL .T
MT15CTM003
VISVESVARAYA NATIONAL INSTITUTE OF TECHNOLOGY,NAGPUR

2. INTRODUCTION
• OCEANS PRESENT UNIQUE ENVIRONMENTAL CONDITIONS THAT DOMINATES
METHODS, EQUIPMENT AND PROCEDURES
• MOST MARINE CONSTRUCTIONS AT SUBSTANTIAL DISTANCE FROM SHORE,
THUS UNIQUE METHODS AND EQUIPMENT'S HAS TO BE USED
• CONSTRUCTION OPERATION : 2000 M
• EXPLORATORY OIL DRILLING : 6000 M
• EQUIPMENT ARE DESIGNED TO WORK IN AND UNDER SEA AND DRAWN HEAVILY
ON NAVEL ARCHITECTURE
• INCLUDE BARGES, SHIPS AND CONSTRUCTION, DRILLING ,DREDGING
EQUIPMENT.

3. • MAIN CONSTRUCTION ACTIVITIES
OFFSHORE WIND FARM,
OIL PLATFORM
BRIDGE PIERS
HARBOR

4. BASIC MOTIONS IN A SEAWAY
• A TYPICAL FLOATING STRUCTURE HAS 6 DEGREE OF FREEDOM AND 6 BASIC
RESPONSE TO WAVE
• ROLL, PITCH, HEAVE,
SURGE ,SWAY AND YAW

5. • VESSELS OR EQUIPMENTS RESPONDS TO COMPLEX SET OF ALL THE ABOVE
MOTIONS
• MOTION ARE AFFECTED BY WAVES AND TIDES

6. BARGES
• LARGE FLAT BOTTOMED TOWED OR SELF PROPELLED BOAT USED FOR HEAVY
GOODS AND BULK CARGO TRANSPORT
• LONG FOR MINIMAL SURGE AND PITCH RESPONSE TO WAVE, WIDE FOR MINIMAL
ROLL
DEEP FOR ADEQUATE BENDING STRENGTH AGAINST HOG AND SAG
• IN CONSTRUCTION THEY ARE USED TO CARRY ROCK REMOVED BY CLAMSHELL
OR DRAGLINES
AND UPON WHICH EQUIPMENT LIKE TRACKED CRANE OR LOADER ARE OPERATED
• TYPICAL BARGE RUN 80 TO 160 M LENGTH ,WIDTH 1/3 OF LENGTH ,DEPTH
1/15 OF LENGTH

10. CRANE BARGES
• BARGE EQUIPPED WITH SHEER LEG CRANE OR FULLY ROTATING CRANE
• SHEER LEGS ARE RIGID A-FRAME SUPPORT AND MANEUVERED BY DECK ENGINE
,TUGS
• WHICH CAN LIFT AN LUFF BUT NOT SWING
• MAXIMUM CAPACITY 7000 T
• LESS COSTLY COMPARED TO ROTATING

13. DERRICK BARGES
• FULLY REVOLVING
• WORKHORSE OF OFFSHORE CONSTRUCTION
• CAPACITY 500- 1500 T
• THE ADVANTAGE IS OPERATION IN ALL DIRECTIONS –SWING
• DESIGNED UPON NAVEL AND STRUCTURAL ARCHITECTURE

15. SEMISUBMERSIBLE BARGES
• STANDARD BARGE SERVING CARGO TRANSPORT OR AS SUPPORT TO CRANE
,OTHER OPERATIONAL EQUIPMENT
• LARGE BASE PONTOON (FLAT BOTTOM HOLLOW METAL CHAMBER)
• FULLY SUBMERGED DURING OPERATION
• PROVIDE MORE STABILITY AGAINST WAVES
• 4 TO 8 COLUMN THAT EXTEND THROUGH WATER SUPPORT DECK

19. JACK UP CONSTRUCTION BARGE
• USE FULL FOR WORKING IN TURBULENT SEA, COASTAL WATER
• FITTED WITH 4 TO 8 LARGE JACKS AND LEGS ; TUBULAR OR FABRICATED STEEL
• BARGE IS TOWED TO WORK POSITION AND JACK UP FREE FROM WAVE
• OPERATE ONLY IN RELATIVELY SHALLOW WATER 30-60 M , 150 EXTREME ,
SINCE LEGS ARE LOWERED TO SEA FLOOR

22. LAUNCH BARGES
• USED FOR TRANSPORT AND LAUNCHING OF JACKETS
• TO DELIVER SUBSEA TEMPLATES WHICH BECOME WORKING PLATFORM OR THE
STRUCTURE ITSELF
• VERY LARGE AND STRONGLY BUILT
• HEAVY RUNNER BEAMS/LAUNCH BEAMS OVER WHICH JACKET WILL SLIDE

25. CATAMARAN BARGES
• FOR HEAVY LIFTING IN HARBORS AND ESPECIALLY USED FOR SUBMERGED
PREFABRICATED TUNNEL
• TWO LONG BARGES SPREAD APART AND JOINED OVER THE TOP BY GANTRIES
• GANTRIES MAY BE TWIN GANTRY TRUSSES TO ENABLE LIFTING

27. DREDGE
• FOR DREDGING – CLEAR BED OF HARBOR , RIVER , OTHER AREA OF WATER
BY SCOOPING OUT MUD
• DIFFERENT TYPES BASED UPON EXTENT , QUALITY, TYPE OF SOIL REMOVED ,
DISPOSAL REQUIREMENT AND DEPTH
CLAMSHELL DREDGE - BUCKET ON VERTICAL LINE ENABLES TO USE CLOSE TO
EXISTING STRUCTURE.
DRAGLINE DREDGE - SUITABLE FOR DIGGING TRENCHES IN SHALLOW WATER ,
SOFT AND MODERATE HARD SOIL
LADDER OR CONTINUOUS FLIGHT BUCKET – DIG DEEPLY >40 M IN HARD
MATERIAL.

28. HYDRAULIC SUCTION DREDGE – SUCK UP MATERIAL THROUGH A PIPE THEN
DISCHARGE IN TO PONTOON OR REQUIRED DISTANCE
CUTTER HEAD DREDGE – IN DENSE AND HARD MATERIAL , CUTTER HEAD
MOUNTED AT THE END OF SUCTION LINE
TRAILER SUCTION HOPPER – SELF PROPELLED VESSEL WITH JET TO BREAK UP SAND
AND SUCK
RIPPER TEETH TO CUT HARD MATERIAL.

34. ANCHOR HANDLING BOATS
• TO PICK AND MOVE ANCHOR EVEN IN ROUGH SEA
• SHORT HIGH MANEUVERABLE VESSELS
• HYDRAULIC ASSIST EQUIPMENT IS AVAILABLE

35. DRILLING VESSELS
• SEMISUBMERSIBLE AND BARGE TYPE
• USED MAINLY FOR EXPLORATORY DRILLING
• HEAVY LIFT EQUIPMENT FOR DRILL STRING
• HAS CENTRAL MOON POOL( OPEN WELL ) WHICH PROVIDE DIRECT
AND PARTIALLY PROTECTED ACCESS TO SEA BELOW
• ABILITY TO WORK AT GREAT DEPTHS
• SETTING SUBSEA TEMPLATES,
PIPE LINE REPAIR AND SEA FLOOR MODIFICATION
• USUALLY EQUIPPED WITH LARGE HOIST OF 500 T CAPACITY

37. FLOATING CONCRETE PLANT
• MOUNTED ON LARGE , HEAVY DUTY BARGE, EQUIPPED WITH MOORING LINES
TO HOLD THE BARGE IN POSITION
• HAVE ; LARGE BIN FOR CA AND FA
SILO FOR CEMENT
SILO FOR FLY ASH AND BLAST FURNACE SLAG
WATER TANK
BATCHING PLANT
CONCRETE MIXER – NORMALLY TURBINE MIXER
CONCRETE PUMP

39. ROV
• REMOTELY OPERATED UNDERWATER VEHICLES
• HIGHLY MANEUVERABLE , OPERATED BY CREW ABOARD A VESSEL
• COMMON IN DEEP WATER HYDROCARBON INDUSTRY
• LEAST EQUIPPED WITH VIDEO CAMERA AND LIGHT
• USED FOR INSPECTION,WELDING

41. THANK YOU
The waves tell of ocean spaces,
Of hearts that are wild and brave.