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SHAMROCK 504

SHAMROCK 504 is a 2021 tank barge. The Coast Guard has recorded 7 inspections since 2021, most recently in March 2026.

Records from 2021 to 2026. Most recent: inspection, 16 March 2026.

Built
2021
Last inspected
16 March 2026
Documentation
Valid · documentation file of 10 August 2026
Controls
None recorded without a removal date

Identity

1645321
Flag
UNITED STATES
Maury page id
psix-1645321

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 Barge class in Maury's sources begin in 1972.

Inspections, by type

Years with a record 6 calendar years (2021–2026)
Every line above is a count of records the US Coast Guard wrote, or a date it recorded. The counts in the strip above are the same counts; this table splits the inspections by the kind of activity 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.

Documentation record

Registered dimensions (L × B × D)297.5 ft × 54.0 ft × 12.0 ft
Registered tonnagegross 1,619 / net 1,619
ITC dimensions (L × B × D)Not recorded
ITC tonnageNot recorded
BuilderARCOSA MARINE PRODUCTS INC · ASHLAND CITY, TN, UNITED STATES · built 2021
Hull materialSteel
PropulsionUNSPECIFIED
Hull shapeBox
Hull configurationMonohull
Hailing portJASPER, TX
Trade endorsementsCoastwise, unrestricted
DocumentationValid · issued 17 February 2026 · expires 28 February 2027
Service, as the file records itTank Barge
Hull formbarge (Maury's inference from propulsion, hull shape, material and length, rule hf-1; not a recorded fact)
Tonnage as PSIX records it1619 - Simplified, Gross Ton
1619 - Simplified, Net Ton
1017 - Dead Weight, Net Ton
1012 - Displacement, Net Ton
Every line above is a field of the National Vessel Documentation Center's file as served by NOAA Fisheries, dated 10 August 2026, matched to this hull on its Official Number. Registered and ITC measurements are two systems and are never combined. One snapshot is held so far; documentation history begins with the next.
Vessel history report
Every record for this hull, in one document — $299

What it gives that this page does not: the whole record in one dated, citable document — every line with its Coast Guard activity id, the retrieval date on the cover, built to print to PDF with its page breaks — that a surveyor can attach and a lender can file. The same facts as this page, complete and in one file.

Every recorded inspection, 1972 to 2026 for this class, in one chronology · every deficiency, with system, dates and resolution · operational controls imposed and removed · every name this hull has been recorded under · the vessels it was inspected alongside, and when · how its record compares with hulls of similar age and size, as a fact about the population and never a judgement about this vessel.

Read one first, in full: a forty-year chronology · a hull that changed operators four times · the sparse case, shown as an example, not for sale.

A request, not a checkout: leave an email and Maury replies once, with the dated document for this hull and a Stripe invoice for $299. Nothing is charged before the document is in your hands.

Inspection history · 7

16 March 2026 Administrative Inspection · Internal Structural Exam
Physical examination · Sector Houston/Galveston · USCG Heartland District (CGD-H) · Activity 8326976
7 January 2026 COI Inspection · Administrative Inspection
Physical examination · Sector Houston/Galveston · USCG Heartland District (CGD-H) · Activity 8291319
18 March 2025 Administrative Inspection · Annual Inspection
Physical examination · Sector Houston/Galveston · USCG Heartland District (CGD-H) · Activity 8095507
19 March 2024 Annual Inspection · Administrative Inspection
Physical examination · Sector Houston/Galveston · USCG Heartland District (CGD-H) · Activity 7882061
5 January 2023 Periodic Inspection · Administrative Inspection
Physical examination · Sector Houston/Galveston · USCG Heartland District (CGD-H) · Activity 7617100
3 January 2022 Administrative Inspection · Annual Inspection
Physical examination · Sector Houston/Galveston · USCG Heartland District (CGD-H) · Activity 7375186
2 February 2021 Initial Construction-Excluding Oversight · Initial Certification · Cargo Tank Internal · Internal Structural Exam · Drydock Exam · MTSA Verification · Hull Examination · Administrative Inspection
Physical examination · Marine Safety Detachment Nashville · USCG Heartland District (CGD-H) · Activity 7109067

Deficiency record · 0

No deficiencies recorded against this vessel. This means none were written in the records covered — it is not a statement about the vessel's condition. What a recorded resolution is.

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.