On-hire Condition Survey of Barge Carried Out

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Uld Inspection of Hatch Cover Carried Out by a Master Mariner

Inspection of Hatch Cover Carried Out | Constellation Marine Services

We, Constellation Marine Services LLC as independent ship and marine surveyors, often get instructions from our principals for Ultrasonic Leak Detection test to be carry out on Cargo Hold hatch covers for the watertight integrity. Recently we got a nomination from one of our clients to carry out ULD testing of hatch covers on board a Bulk carrier and report on the watertight integrity of cargo holds. Our Master Mariner/Naval Architect upon receiving instruction for the survey contacted the concerned agents & arranged to attend a survey on board the subject vessel at Abu Dhabi port in relation to ULD inspection.

Constellation Engineer Surveyors’s Attendance on Board the Vessel.
Upon receiving the notice from the agent our attending Master Mariner/ surveyor boarded the vessel. Vessel was in ballast condition. Upon boarding the vessel, he met the Master/Chief officer & explained our scope of the attendance.

Vessel has 5 cargo holds of following capacity
Grain (cbm) Bale (cbm)
No.1: 12.601,90 11.940,00
No.2: 14.659,30 14.007,40
No.3: 13.498,10 12.806,50
No.4: 14.239,30 13.597,60
No.5: 14.451,80 14.016,60
Total: 69.450,40 66.368,10

Principle: Ultrasonic waves produced by the transmitter in the enclosed space will leak through smallest apertures. Leaking of sound will be detected by receiver or detector. Extent of leakage will depend on decimal value.

Prior to testing we calibrated the equipment with transmitter & receiver. One of the crew placed the transmitter at center of the cargo hold. Receiver & transmitter has been remotely connected. Upon connecting the transmitter to receiver, we have taken the open-hatch value of the Hold (Approx. 44 dB). After closing the hold, we inspected the hatch cover on all sides with the use of telescopic extension & neck band headphones. Leaking places were also witnessed by the Chief Officer using headphones. At 4 places per hold we found leak. We assumed it is due to non-tightening of cleats. So, we requested chief officer to tighten all the cleats of all hatch Covers to inspect once again to ensure the leakage. Again, we inspected all cargo holds so this time the leakages were reduced however at 2 places still we noted the leakage in one of the hold. We found it is due to the damage of rubber gasket. We suggested the chief officer to replace the damaged gasket & inform us to recheck the failed cargo hatch.

Prepared by Engr. Vignesh Prabhu.A.
Team Constellation a highly professional Team Constellation a highly professional Team Constellation a highly professional Team Constellation a highly professional Team Constellation a highly professional Team Constellation a highly professional Team Constellation a highly professional & experienced Master Mariners, Naval Architects, Tanker Masters, Engineers, Consultants, Marine Asset Valuers and a team of Qualified Surveyors with expertise and experience in different areas of marine activities offering round the clock services to the clients in shipping and insurance industry with direct presence at all sea ports in UAE and with offices in Dubai, Abu Dhabi and Fujairah just a call away from these ports. Constellation has international offices in UK and Singapore and associates all over Middle East and UAE, London, Holland, Germany, West Africa, Cape Town, Oman, China, Singapore. Survey, Inspection,investigation Risk and Root Cause Analysis Load Test of Lifting Gears Certification Mrine & Insurance Clam Consultancy Vessel Valuation Dry Cargo Bulk Break Bulk Project Cargo Dry Container Survey Draught Survey Pre-shipment Condition Pre-shipment Condition Pre-discharge Condtion Pre-dischsrge Condition Stuffing Unstuffing Stow Cargo Damage Surey Loading Discharging Survey Taly Cagrgo Container Damage Sampling & Analysis Damage Short Landing Survey Dangerous Cargo Survey Pre-shipment Condition Stowage Plan Preparation Reefer Container Short Landing Investigation Cargo Hold Inspection Truck Inspection Lashing & Securing Certification Pti Inspection Survey Loading off Loading on Board Stowge Supervision Container Condition Survey Supervision Uld Inspection of Hatch Covers Temp Set. Vent Inspection Cargo Hold/hatch Inspection Cargo Land Transportation Stuffing Unstuffing Stow Weighment Witnessing Cargo Damage Investigation Reefer Cargo Damage Survey Sealing/unsealing Short Landing Investigation Reefer Cargo Damage Investigat Bunker Survey Petroleum On Hire/off Hire Rob Survey Vessel Tank Inspetion and Certification On Hire Off Hire Bunker & Condition Survey. Petrolem Prduct Quantify Survey Sampling & Sealing Prduct Loading Dischrging and Sampling Witnessing Sample Lab Analysis. Cargo Contamination Investigation Magnetic Compass Adjustment & Deviation Card Hull & Machinery Damge Survey Sts Operation Ism, Isps and Mlc Audits Project Cargo Transportation Loading discharging Marine Warranty Surveys Project Management & Decommissioning Supervision for Off Shore Structures Rig Moves, Location Approvals and Off Shore Warranty Inspection Prior & During Moves. Heavy Cargo Lifting Plan Review, Preparation of Stowage& Lashing Plan Towing Arrangement Plan and Tow Approvals. Collision Damage Survey, Repair Cost Estimation and Investigation P&i Pre-entry Vessel Conition Surveys Hull & Machinery Conditon Surveys Root Cause Analysis of Maritime Accidents. Issuance of Charterd Engineer Certificate for Export Machinery. Valuation Pre-purchase Conditiion Surveys & Sea Trials Marine Vessel Condition Inspection&valuation Vessel Valuation. Valuation Marine Asset, Machinery& Equipment Constellation Marine is managed by four board members UK, connected with various facets of the marine business like Maritime Law & Marine insurance individually. Constellation Marine Surveyors & Consultants are independent and professional in every of our conduct. take up appointments for ship owner, trader or insurance companies Constellation Marine has registered offices in UK, Singapore and Middle East specializing in Maritime and energy claims, offshore marine warranty inspection, ship and cargo inspections for principals, insurance companies and charterers and P&I Clubs as our main principals instructing us repeatedly global company with branches in Dubai, London, Singapore, Abu Dhabi, Fujairah, Ras Al Khaimah, Bahrain, Kuwait, Qatar, Oman, Yemen Liason offices at Germany, Holland, China, west South Africa.