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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 9 inspections since 2016, most recently in September 2020, along with 12 deficiencies.

Records from 2016 to 2020. Most recent: inspection, 13 September 2020.

Built
2010
Last inspected
13 September 2020
Documentation
Not in the documentation file of 10 August 2026
Inspections
9
Deficiencies
12 recorded · 0 without a recorded resolution
Controls
None recorded without a removal date

Everything above is free. The detail below — the inspection history, the deficiency record and the documentation record — is Professional, $39 a month. Sign in.

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 23 August 2026, retrieved 5 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 2016.

Inspection record

Last inspected 13 September 2020
Recorded inspections9
…physical examinations4
…administrative events1
…with no type recorded1
Deficiencies 12 recorded · 0 without a recorded resolution
Operational controls None recorded without a removal date
Years with a record 5 calendar years (2016–2020)
Every line above is a count of records the US Coast Guard wrote, or a date it recorded. A blank resolution means none was recorded in this data; it does not establish that a deficiency is outstanding. Years with a record are calendar years in which a record exists, not years in service. What Maury does not do.

Identity

US Official No.
—
IMO number
8770027
Call sign
A8QU6
MISLE id
1108489
Flag
LIBERIA
Maury page id
psix-1108489

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 August 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.
Professional
Detail on this page

9 inspections, each with its date, unit and type; 12 deficiencies with the resolution recorded against each; the documentation record, as PSIX holds it. The counts in the summary above are the same counts, and they are free.

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Vessel history report

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. What a sparse-record report looks like.

Inspection history · 9

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

Deficiency record · 12

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.

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.