RIDLEY THOMAS is a 1981 research vessel. The Coast Guard has recorded 4 inspections since 2017, most recently in June 2020, along with 1 deficiency and 1 operational control.
Records from 2017 to 2020. Most recent: inspection, 14 June 2020.
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 Research Ship class in Maury's sources begin in 2016.
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.
Tonnage as PSIX records it547 - Dead Weight, Ton 1241 - Convention (Subpart B), Gross Ton 372 - Convention (Subpart B), Net 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.
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 · 4
14 June 2020Deficiency Check · PSC B
Physical examination · Sector New York · USCG Northeast District (CGD-NE) · Activity 6976188
6 August 2018PII Safety Exam · COE-Offshore · ISPS II Exam · Ballast Water Examination
Physical examination · U.S. COAST GUARD FORCES MICRONESIA/SECTOR GUAM · USCG Oceania District (CGD-O) · Activity 6498489
2 August 2018Type not recorded
No type recorded · U.S. COAST GUARD FORCES MICRONESIA/SECTOR GUAM · USCG Oceania District (CGD-O) · Activity 6498528
26 July 2017ISPS II Exam · PII Safety Exam · Ballast Water Examination
Physical examination · Sector Mobile · USCG Heartland District (CGD-H) · Activity 6213146
99 - Other › N/A - No Subsystem › Other (Safety in general)
Issued 7 August 2018Resolved
9900 Maintain a ballast water management (BWM) plan that has been developed specifically for the vessel. The plan must include detailed fouling maintenance and removal procedures. The vessel's BWM plan did not include fouling removal procedures.
Action required: 40 - Rectify deficiencies prior to next US port after sailing foreign
Due 7 August 2018
Resolved 14 June 2020
Resolution: Ballast Water Management plan was reviewed by ABS classification society finding the Ridley Thomas in compliance with 33 CFR 151.2050 regarding fouling maintenance and removal procedures.
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.