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ENSCO 8503

Mobile Offshore Drilling Unit · Offshore class · Built 2010s · USCG Heartland District (CGD-H)

ENSCO 8503 is a 2010 mobile offshore drilling unit. The Coast Guard has recorded 18 inspections since 2011, most recently in September 2020, along with 16 deficiencies.

Records from 2011 to 2020. Most recent: inspection, 13 September 2020.

Built
2010
Last inspected
13 September 2020
Documentation
Not in the documentation file of 10 September 2026
Inspections
18
Deficiencies
16 recorded · 0 without a recorded resolution
Controls
None recorded without a removal date

Identity

US Official No.
—
IMO number
8770027 View on MarineTraffic leaves Maury; a third-party site, nothing from it is stored here
Call sign
A8QU6
MISLE id
1108489
Flag
LIBERIA
MMSI
—
Maury page id
psix-1108489

Inspections, by type

…physical examinations7
…administrative events5
…with no type recorded2
Years with a record 9 calendar years (2011–2020)
The 18 inspections in the strip above, split by the kind of activity the US Coast Guard recorded. Years with a record are calendar years in which a record exists, not years in service. What Maury does not do.

This record may be incomplete: the most recent inspection recorded for this vessel was 6 years ago. Maury shows what the Coast Guard recorded, not whether the vessel has been inspected since, is still in service, or what condition it is in. Coast Guard record current through 13 September 2026, retrieved 18 September 2026 from PSIX. Every field on this page was recorded by the Coast Guard. Records for the Offshore class in Maury's sources begin in 1978.

Documentation record

Tonnage as PSIX records it5813 - Convention (Subpart B), Net Ton
19377 - Convention (Subpart B), Gross Ton
This hull's Official Number is not in the NVDC file dated 10 September 2026 as served by NOAA Fisheries, so no documentation record is shown. Absence from that file is a fact about the file, not about the hull.

Radio station licence

No FCC ship-station licence is recorded against this Official Number in the file of 6 September 2026. That is a fact about the licence file, not about the radio.

A report is not offered for this hull: Its record holds only 2 of the seven kinds of material a report is built from: inspections, deficiencies, operational controls, tow-unit appearances, casualty records, dimensions and documentation. That is a statement about the record, not about the vessel. Reports.

Inspection history · 18

13 September 2020 Administrative Inspection
Administrative · Sector Corpus Christi · USCG Heartland District (CGD-H) · Activity 7056979
27 October 2019 Type not recorded
No type recorded · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 6860227
9 July 2019 COC-MODU Renew
Type not classified · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 6767709
14 August 2018 COC-MODU Annual
Type not classified · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 6510941
7 August 2017 Deficiency Check · COC-MODU Renew
Physical examination · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 6235315
31 March 2017 Deficiency Check
Physical examination · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 6237805
15 December 2016 COC-MODU Annual · Deficiency Check
Physical examination · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 6058822
16 October 2016 In-Service Inspection
Physical examination · USCG Heartland District · USCG Heartland District (CGD-H) · Activity 6023217
14 January 2016 COC-MODU Renew
Type not classified · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 5797362
30 September 2015 Administrative Inspection · Deficiency Check
Physical examination · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 6068199
3 October 2014 Administrative Inspection
Administrative · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 4998451
12 March 2014 Administrative Inspection
Administrative · Marine Safety Unit Port Arthur · USCG Heartland District (CGD-H) · Activity 4814717
21 June 2012 Deficiency Check
Physical examination · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 4357152
23 May 2012 Administrative Inspection
Administrative · Marine Safety Unit Port Arthur · USCG Heartland District (CGD-H) · Activity 4319769
14 May 2012 Deficiency Check
Physical examination · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 4312159
19 January 2012 Administrative Inspection
Administrative · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 4227997
19 December 2011 Type not recorded
No type recorded · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 4228815
16 December 2011 COC-MODU Renew
Type not classified · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 4202666

Deficiency record · 16

14 - Pollution Prevention › 146 - MARPOL Annex VI › Record book of engine parameters
Issued 9 July 2019 Resolved
Marpol Annex VI Reg 13 requires Engines Tech Files iaw NOx Technical Code Ch 2 requirements. The tech files required by these EIAPP Certificates specify engine parameters check method of verification within the Code. Parts changeout for NOx components are not being kept for any of the engines onboard. Provide a history from computer records up to this date for each engine
Condition: Improper/Lack of Maintenance
Action required: 50 - Rectify deficiencies w/in 30 days
Due 9 August 2019
Resolved 16 July 2019
Resolution: Email from master with supporting evidence to clear def.
11 - Life Saving Appliances › N/A - No Subsystem › Rescue boats
Issued 9 July 2019 Resolved
Each unit should carry at least 1 rescue boat complying with Reg III/47. Releasing cable parted during lowering test of Rescue Boat. Repair and retest.
Condition: Placed in Improper Service
Action required: 50 - Rectify deficiencies w/in 30 days
Due 9 August 2019
Resolved 16 July 2019
Resolution: Email from Master with documentation to clarify deficiency.
Lifesaving › Lifejacket/PFD (General) › Retroreflective Material
Issued 8 August 2017 Resolved
Several of the retroflective material on the PFDs had turned yellow, and were no longer reflective to light. 89 MODU Code/ 10.18.2
Condition: Invalid
Action required: 705 - Other - as specified
Due 1 September 2017
Resolved 8 August 2017
Resolution: Deficiency was cleared on the spot. Rig provided proof of purchase for lifejacket replacements. See Documents for copy.
Pollution Prevention/Response › Prevention Equipment › Annex VI
Issued 7 August 2017 Resolved
Fuel oil transfer samples on the facility were not signed or sealed. MARPOL Annex VI/18.8.2
Condition: Improper/Lack of Maintenance
Action required: 705 - Other - as specified
Due 1 September 2017
Resolved 10 August 2017
Resolution: Company provided Work Instructions/ Training for bunkering fuel.
Operations/Management › Drills/Instruction › Launching/Recovery of Survival Craft
Issued 15 December 2016 Resolved
Each Lifeboat should, as far as reasonably practicable, be launched with its assigned operating crew aboard and maneuvered in the water at least every 3 months. MODU is not disconnecting release hooks and maneuvering lifeboat. 89 MODU Code 14.11.5 MSC.1/circ.1206/rev 1
Action required: 66 - Prior to drilling or production operations
Resolved 28 December 2016
Resolution: MODU provided photographic evidence of launching and manuvering all lifeboats.
Documentation › Manuals/Policy Documentation › Training Manual (lifesaving)
Issued 15 December 2016 Resolved
A training manual complying with the requirements of regualtion III/51(reg 35 post 98) of the SOLAS Convention should be provided and relevant information made available to each person aboard. MODU's training manual was outdated and did not reflect the addition of a dedicated FRC nor did it contain procedures for recovery of survival craft and rescue boats including stowage and securing.
Action required: 705 - Other - as specified
Due 15 January 2017
Resolved 20 December 2016
Resolution: MODU provided updated SOLAS training manual with the addition of the FRC and instructions for launching and recovering both the lifeboats and FRC.
Documentation › Certificates/Documents › MODU Safety Certificate
Issued 15 December 2016 Resolved
THe MODU Safety Certificate should be drawn up in the form corresponding to the model given in the appendix to the code. MODU safety certificate did not reflect the addition of a dedicated FRC in section 3 of the certificate. 89 MODU Code 1.6.10
Action required: 705 - Other - as specified
Due 15 January 2017
Resolved 9 January 2017
Resolution: Vessel rep provided copy of new MODU Safety cert reflecting the addition of a new FRC.
Engineering › Diesel Engine (propulsion-electric) › Emergency shutdown
Issued 15 December 2016 Resolved
Where risk from overspeeding of machinery exists, means should be provided to ensure that the safe speed is not exceeded. MODU did not have procedures from engine manufacture (EMD) for the proper test procedures for testing overspeed function. 89 MODU code 4.2.3
Action required: 705 - Other - as specified
Due 15 January 2017
Resolved 20 December 2016
Resolution: MODU provided letter from EMD approving procedures from S&S for over speed testing.
Documentation › Certificates/Documents › Engine EPA Approved Technical File
Issued 15 December 2016 Resolved
The Survey of marine diesel engines and equipment for compliance with regulation 13 of MARPOL Annex VI shall be conducted in accordance with the revised NOx Technical Code 2008. MODU did not produce EIAPP certs and tech files for 02 crane engines. MARPOL VI/5.3.2__ NOx Tech code 2.3.4
Action required: 705 - Other - as specified
Due 15 December 2016
Resolved 15 December 2016
Resolution: Chief engineer provided said files and certs prior to inspectors leaving MODU. Cleared on the spot.
Documentation › Certificates/Documents › Engine EPA Approved Technical File
Issued 15 December 2016 Resolved
The survey of marine diesel engines and equipment for compliance with regulation 13 of MARPOL Annex VI shall be conducted in accordance with the revised NOx Technical code 2008. MODU did not produce for inspection a record of engine parameters or specifications of spare parts required to maintain complaince with applicable NOx emission limit. MARPOL VI/5.3.2__NOx Tech Code 2.4.7
Action required: 705 - Other - as specified
Due 15 January 2017
Resolved 13 January 2017
Resolution: Ensco Rep emailed required documents.
Lifesaving › Lifeboat › Exhaust Pipe
Issued 15 January 2016 Resolved
Lifeboats 1, 2 & 3 were found to have pinhole exhaust leaks from the tailpipe of the lifeboat leaking into the cabins of the lifeboats. 89 MODU/ 10.8.1, 50c
Condition: Improper/Lack of Maintenance
Action required: 705 - Other - as specified
Due 15 February 2016
Resolved 30 January 2016
Resolution: 30 Jan 2016- Received email from vessel captain stating that the exhaust leaks have been repaired and all the lifeboats are back in service.
Operations/Management › Lifesaving › Op Readiness/Maintenance/Inspection
Issued 15 January 2016 Resolved
The company should establish procedures to ensure that the ship is maintained in conformity with the provisions of the relevant rules and regulations and with any additional requirements which may established. Due to the condition of the lifeboats, the maintenance system of the vessel is called into question. recommend an external third party ISM audit to be conducted. ISM 10.1
Condition: Improper/Lack of Maintenance
Action required: 705 - Other - as specified
Due 15 February 2016
Resolved 30 January 2016
Resolution: 30 Jan 2016- Received email from vessel captain stating the vessels deficiencies were cleared.
Engineering › Diesel Engine (auxiliary) › Overspeed Device
Issued 15 December 2011 Resolved
Prove proper operation of the safety devices/shut-downs for the emergency generator. Provide test procedures and crew training for future testing. Existing system has not been tested since delivery and crew is not aware of testing methods.
Action required: 705 - Other - as specified
Due 17 January 2012
Resolved 14 May 2012
Resolution: Witnessed satisfactory overspeed and low lube oil shutdowns on emergency generator. Crew had good working knowledge of tests and equipment.
Fire Fighting › Ventilation Systems › Operating Controls
Issued 15 December 2011 Resolved
Prove proper operation of the CO2 actuated ventilation closures for the main engine room and the emergency generator room. Closures have not been tested since delivery and were not tested during the last 3rd party service due to rig operations.
Action required: 705 - Other - as specified
Due 17 January 2012
Resolved 14 May 2012
Resolution: Reviewed Hiller report of 3rd party testing of pressure switches for ventilation shutdowns in fixed firefighting systems.
Operations/Management › Navigation Safety › Navigation Underway, General
Issued 15 December 2011 Resolved
During the phase-back testing on the dynamic positioning system the rig blacked-out. Have the FMEA for the phase-back evaluated to determine the reason for the black-out and retest.
Action required: 15 - Rectify deficiencies by next port
Resolved 21 June 2012
Resolution: Witnessed satisfactory test of the DP phase-back.
Operations/Management › Navigation Safety › Navigation Underway, General
Issued 15 December 2011 Resolved
Due to the failure of the phase-back test of the dynamic positioning system have all FMEAs evaluated by ABS to ensure accuracy and reliability of all systems.
Action required: 15 - Rectify deficiencies by next port
Resolved 22 January 2014
Resolution: FMEA trials were successfully conducted and witnessed by CG

Ownership record

The Coast Guard's documentation record for this hull -- the Abstract of Title, with its owners and liens as filed -- is not in PSIX. Ask, and Maury buys it from the National Vessel Documentation Center, files it here with its date, and every reader of this page gets it.