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AI 521

Tank Barge · Barge class · Built 1990s · USCG Heartland District (CGD-H) · MARATHON PETROLEUM COMPANY, LP operator of record, 2023

AI 521 is a 1996 tank barge. The Coast Guard has recorded 50 inspections since 1997, most recently in August 2021, along with 4 deficiencies and 1 casualty investigation in 2011.

Records from 1997 to 2021. Most recent: inspection, 16 August 2021.

Built: 1996
Last inspected: 16 August 2021
Documentation: Not in the documentation file of 10 September 2026
Inspections: 50
Deficiencies: 4 recorded · 0 without a recorded resolution
Controls: None recorded without a removal date
Casualties: 1 investigation · 2011

Identity

1048310

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448897

Flag

UNITED STATES

MMSI

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Maury page id

psix-448897

Inspections, by type

…physical examinations32

…administrative events8

…with no type recorded10

Years with a record 25 calendar years (1997–2021)

The 50 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 5 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 Barge class in Maury's sources begin in 1972.

Documentation record

Tonnage as PSIX records it1619 - Simplified, Gross Ton
1619 - Simplified, Net 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.

Inspection history · 50

16 August 2021 Internal Structural Exam · COI Inspection · MTSA Verification

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 7284945

21 October 2020 Annual Inspection · MTSA Verification

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 7081596

21 February 2020 Bulk Liquid Transfer Monitor

Physical examination · Sector Ohio Valley · USCG Heartland District (CGD-H) · Activity 6914601

3 September 2019 Periodic Inspection · MTSA Verification

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 6804663

30 July 2018 MTSA Verification · Annual Inspection

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 6495513

31 August 2017 MTSA Verification · Annual Inspection

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 6261475

28 September 2016 Internal Structural Exam · Cargo Tank Internal · Drydock Exam · COI Inspection · MTSA Verification

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 6011284

25 February 2016 MTSA Verification · Annual Inspection

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 5821834

12 November 2015 Examination of Repairs

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 5763073

26 February 2015 Administrative Inspection

Administrative · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 5075387

8 December 2014 MTSA Verification · Periodic Inspection

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 5036134

2 December 2014 Administrative Inspection

Administrative · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 5032830

18 November 2013 Annual Inspection · MTSA Verification

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 4754746

13 December 2012 MTSA Verification · Annual Inspection

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 4501507

10 February 2012 MTSA Verification · COI Inspection · Internal Structural Exam

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 4242109

17 October 2011 Annual Inspection · MTSA Verification

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 4170024

14 September 2011 Type not recorded

No type recorded · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 4145826

1 December 2010 COI Inspection

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 3902952

25 October 2010 Type not recorded

No type recorded · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 3876928

25 June 2009 Type not recorded

No type recorded · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 3519450

14 October 2008 MTSA Verification · Periodic Inspection

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 3344415

6 June 2008 Examination of Repairs

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 3232816

23 May 2008 Examination of Repairs

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 3221166

18 October 2007 MTSA Verification · Annual Inspection

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 3082465

18 April 2007 Type not recorded

No type recorded · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 2911093

5 March 2007 Hull Examination · MTSA Verification · Annual Inspection · Internal Structural Exam · Cargo Tank Internal

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 2881998

5 October 2006 Type not recorded

No type recorded · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 2795299

11 April 2006 Security Plan Amendment Review - VSP

Administrative · Marine Safety Center (MSC) · Activity 2622094

3 January 2006 COI Inspection

Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 2559858

4 August 2005 Security Plan Amendment Review - VSP

Administrative · Marine Safety Center (MSC) · Activity 2451389

28 March 2005 Security Plan Amendment Review - VSP

Administrative · Marine Safety Center (MSC) · Activity 2321419

18 March 2005 MTSA Verification

Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 2320289

19 November 2004 Periodic Inspection

Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 2244219

10 November 2004 Security Plan Amendment Review - VSP

Administrative · Marine Safety Center (MSC) · Activity 2238786

26 August 2004 Type not recorded

No type recorded · MSO Pittsburgh · USCG Heartland District (CGD-H) · Activity 2177619

30 December 2003 Security Plan Review - VSP

Administrative · Marine Safety Center (MSC) · Activity 1984461

10 November 2003 Annual Inspection

Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1945136

18 February 2003 Annual Inspection

Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1746970

7 February 2002 Annual Inspection · Internal Structural Exam · Examination of Repairs

Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1487286

28 August 2001 Type not recorded

No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 480157

7 May 2001 Damage Survey

Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1063366

6 February 2001 COI Inspection

Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1366157

17 July 2000 Type not recorded

No type recorded · MSO Pittsburgh · USCG Heartland District (CGD-H) · Activity 498611

24 January 2000 Re-Inspection

Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 814952

9 March 1999 COI Inspection

Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1420087

13 July 1998 Type not recorded

No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 418284

6 April 1998 Re-Inspection

Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 788637

30 December 1997 Administrative

Administrative · MSO LOUISVILLE · USCG Heartland District (CGD-H) · Activity 1117439

24 September 1997 Type not recorded

No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 443532

26 March 1997 Initial Certification · Hull Examination

Physical examination · MSO LOUISVILLE · USCG Heartland District (CGD-H) · Activity 1446463

Deficiency record · 4

13 - Propulsion and Auxiliary Machinery › N/A - No Subsystem › Auxiliary engine

Issued 22 September 2021 Resolved

The cargo pump engine was unable to start during the COI inspection. The engine was removed during painting and the fuel system was airbound and unable to start.

Condition: Improper Installation
Action required: 16 - Rectify deficiencies w/in 14 days
Due 22 September 2021
Resolved 24 September 2021
Resolution: Attended Vessel, witnessed operational test and emergency stop. All was satisfactory.

06 - Cargo Operations Including Equipment › N/A - No Subsystem › Other (cargo)

Issued 3 September 2019 Resolved

Any tank vessel equipped with an internal combustion engine shall be equipped with a manual remote shutdown that is conspicuously marked. The shutdown markings were faded. Replace signs.

Action required: 50 - Rectify deficiencies w/in 30 days
Due 4 October 2019
Resolved 15 October 2019
Resolution: Signed replaced.

13 - Propulsion and Auxiliary Machinery › N/A - No Subsystem › Gauges, thermometers, etc

Issued 3 September 2019 Resolved

The pressure gauge at the pump discharge shall be visible from the pump controls. The gauge was not visible. Turn the gauge so it is visible.

Action required: 50 - Rectify deficiencies w/in 30 days
Due 4 October 2019
Resolved 15 October 2019
Resolution: Gauge positioning modified.

Construction/Loadline

Issued 7 May 2001 Resolved

MAKE PERMANANT PORT REPAIRS TO SIDE OF STERN DECK KNUCKLE, TO THE SATISFACTION OF THE ATTENDING MARINE INSPECTOR, NO LATER THAN 30APR02, OR NEXT INTERNAL STRUCTURAL EXAM. MAKE TEMPORARY REPAIRS TO THE SATISFACTION OF THE ATTENDING MARINE INSPECTOR NO LATER THAN 30MAY01.

Condition: Unknown
Due 30 April 2002
Resolved 7 February 2002
Resolution: Observed satisfactory repairs.

Casualty record · 1

13 March 2011Routine · role: Involved in a Marine Casualty · activity 4221322

Each line is an incident investigation the Coast Guard recorded with this hull among the vessels involved, with the date and the classification the Coast Guard gave it, and the bridge, lock or dam the investigation names where it names one. Involvement is not fault. The investigation narrative is not published. Source: IIR, through 2026.

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.