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A O 421

Tank Barge · Barge class · Built 1970s · USCG Heartland District (CGD-H)

A O 421 is a 1971 tank barge. The Coast Guard has recorded 75 inspections since 1982, most recently in December 2006, along with 6 deficiencies.

Records from 1982 to 2006. Most recent: inspection, 20 December 2006.

Built
1971
Last inspected
20 December 2006
Documentation
Not in the documentation file of 10 September 2026
Inspections
75
Deficiencies
6 recorded · 0 without a recorded resolution
Controls
None recorded without a removal date

Identity

US Official No.
533991
IMO number
—
Call sign
—
MISLE id
46941
Flag
UNITED STATES
MMSI
—
Maury page id
psix-46941

Inspections, by type

…physical examinations32
…administrative events7
…with no type recorded36
Years with a record 25 calendar years (1982–2006)
The 75 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 20 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 it1911 - Regulatory (Subpart C or D), Gross Ton
1911 - Regulatory (Subpart C or D), 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 · 75

20 December 2006 Administrative Inspection · Internal Structural Exam
Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 2844177
10 April 2006 Security Plan Amendment Review - VSP
Administrative · Marine Safety Center (MSC) · Activity 2620853
24 October 2005 Examination of Repairs · COI Inspection
Physical examination · Marine Safety Unit Huntington · USCG Heartland District (CGD-H) · Activity 2520661
4 August 2005 Security Plan Amendment Review - VSP
Administrative · Marine Safety Center (MSC) · Activity 2451125
28 March 2005 Security Plan Amendment Review - VSP
Administrative · Marine Safety Center (MSC) · Activity 2321034
18 March 2005 MTSA Verification
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 2319496
10 November 2004 Security Plan Amendment Review - VSP
Administrative · Marine Safety Center (MSC) · Activity 2238609
13 August 2004 Annual Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 2165084
30 December 2003 Security Plan Review - VSP
Administrative · Marine Safety Center (MSC) · Activity 1983924
24 September 2003 Periodic Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1912037
27 March 2003 Damage Survey
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1763659
1 October 2002 Annual Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1688328
8 September 2002 Type not recorded
No type recorded · Marine Safety Detachment Cincinnati · USCG Heartland District (CGD-H) · Activity 1672506
29 January 2002 Examination of Repairs
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1483598
7 January 2002 Type not recorded
No type recorded · MSO LOUISVILLE · USCG Heartland District (CGD-H) · Activity 1476179
5 January 2002 Type not recorded
No type recorded · MSO LOUISVILLE · USCG Heartland District (CGD-H) · Activity 1475870
30 November 2001 Annual Inspection · Internal Structural Exam
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1476123
9 May 2001 Type not recorded
No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 467342
7 April 2001 Type not recorded
No type recorded · MSO LOUISVILLE · USCG Heartland District (CGD-H) · Activity 481575
9 March 2001 Type not recorded
No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 498188
9 November 2000 COI Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1373219
23 May 2000 Examination of Repairs
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 818118
6 May 2000 Examination of Repairs
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 819510
1 November 1999 Re-Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1131933
31 August 1999 Type not recorded
No type recorded · MSO LOUISVILLE · USCG Heartland District (CGD-H) · Activity 520036
30 December 1998 COI Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1390893
3 August 1998 Examination of Repairs
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 794911
8 January 1998 Re-Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1121026
3 August 1997 Type not recorded
No type recorded · Marine Safety Detachment Cincinnati · USCG Heartland District (CGD-H) · Activity 457218
5 July 1997 Type not recorded
No type recorded · MSO LOUISVILLE · USCG Heartland District (CGD-H) · Activity 457505
22 January 1997 COI Inspection · Hull Examination
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1390412
28 February 1996 Re-Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 884754
7 December 1995 Type not recorded
No type recorded · Marine Safety Detachment Cincinnati · USCG Heartland District (CGD-H) · Activity 508948
11 July 1995 Examination of Repairs
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 871172
21 June 1995 Type not recorded
No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 523748
14 February 1995 COI Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 848655
4 October 1994 Type not recorded
No type recorded · MSO Pittsburgh · USCG Heartland District (CGD-H) · Activity 445460
29 September 1994 Examination of Repairs
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1180692
19 July 1994 Type not recorded
No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 642164
10 July 1994 Type not recorded
No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 66070
10 July 1994 Type not recorded
No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 231502
10 July 1994 Type not recorded
No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 460126
25 March 1994 Re-Inspection · Examination of Repairs
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 858052
16 June 1993 Type not recorded
No type recorded · MSO Paducah · USCG Heartland District (CGD-H) · Activity 642139
29 May 1993 Type not recorded
No type recorded · MSO Paducah · USCG Heartland District (CGD-H) · Activity 106382
29 May 1993 Type not recorded
No type recorded · MSO Paducah · USCG Heartland District (CGD-H) · Activity 470221
24 March 1993 COI Inspection · Examination of Repairs
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1142594
11 July 1992 Type not recorded
No type recorded · Marine Safety Detachment Cincinnati · USCG Heartland District (CGD-H) · Activity 442089
17 February 1992 Type not recorded
No type recorded · Marine Safety Detachment Cincinnati · USCG Heartland District (CGD-H) · Activity 439410
22 October 1991 Type not recorded
No type recorded · Marine Safety Detachment Cincinnati · USCG Heartland District (CGD-H) · Activity 483742
2 October 1991 Hull Examination
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 940191
20 April 1991 Type not recorded
No type recorded · MSO LOUISVILLE · USCG Heartland District (CGD-H) · Activity 536353
18 March 1991 COI Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 896138
18 March 1991 Administrative
Administrative · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1000724
13 February 1991 Type not recorded
No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 515078
24 September 1990 Deficiency Check
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 917207
5 September 1990 Administrative
Administrative · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 903805
12 July 1990 Type not recorded
No type recorded · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 528492
9 May 1990 Re-Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1229645
11 May 1989 Type not recorded
No type recorded · MSO Pittsburgh · USCG Heartland District (CGD-H) · Activity 508885
21 March 1989 COI Inspection
Physical examination · MSO HUNTINGTON · USCG Heartland District (CGD-H) · Activity 1210718
2 March 1989 Re-Inspection
Physical examination · MSO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 890659
8 November 1988 Type not recorded
No type recorded · MSO Mobile · USCG Heartland District (CGD-H) · Activity 506729
13 July 1988 Type not recorded
No type recorded · MSO LOUISVILLE · USCG Heartland District (CGD-H) · Activity 473648
28 March 1988 Re-Inspection
Physical examination · MSO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1340248
16 March 1987 COI Inspection · Hull Examination
Physical examination · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1019489
22 January 1986 COI Inspection
Physical examination · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1294852
18 February 1985 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1293708
13 October 1984 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 975409
24 July 1984 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 974978
26 April 1984 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 973578
2 February 1984 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 970912
31 May 1983 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1275734
24 November 1982 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 966242
4 March 1982 Type not recorded
No type recorded · MIO HOUSTON · USCG Heartland District (CGD-H) · Activity 969909

Deficiency record · 6

Deck/Cargo › Mooring/Anchoring
Issued 21 December 2001 Resolved
Port bow winch was missing brake shoe. This item was corrected later same day by MAP Mechanics. LEGACY COMPONENT DESC: Winch
Condition: Improper/Lack of Maintenance
Action required: 17 - Rectify deficiencies prior to departure
Resolved 21 December 2001
Deck/Cargo › Cargo Stowage
Issued 21 December 2001 Resolved
Port #5 cargo tank vent screen was improper size. Required owner to replace with proper size flame screen. This item was corrected later same day. LEGACY COMPONENT DESC: Cargo Tank Vent
Condition: Improper Installation
Action required: 701 - Prior to carriage of passengers/cargo
Resolved 21 December 2001
Construction/Loadline
Issued 9 May 1990 Resolved
REPLACE WARPED HATCH COVER IN WAY OF #1 STBD WING VOID.
Condition: Unknown
Due 9 May 1990
Resolved 9 May 1990
Construction/Loadline
Issued 9 May 1990 Resolved
PERMANENTLY REPAIR 6' DECK KNUCKLE FRACTURE ON STBD CORNER AFT.
Condition: Unknown
Due 9 May 1990
Resolved 9 May 1990
Construction/Loadline
Issued 9 May 1990 Resolved
PERMANENTLY REPAIR 12" DECK KNUCKLE FRACTURE ON PORT AFT CORNER.
Condition: Unknown
Due 9 May 1990
Resolved 9 May 1990
Deck/Cargo
Issued 9 May 1990 Resolved
AFTER DISCHARGE BUT PRIOR TO LOADING CARGO PERMANENTLY REPAIR CARGO TANK LEAK ON TOP EDGE OF #4 PORT CARGO TANK OF #6 EXTERNAL FRAME FROM AFT.
Condition: Unknown
Due 9 May 1990
Resolved 9 May 1990

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.