DUPLICATE OF HERCULES 350 (ON650426, HULL 707) is a mobile offshore drilling unit. The Coast Guard has recorded 5 inspections since 2005, most recently in January 2008, along with 2 deficiencies.
Records from 2005 to 2008. Most recent: inspection, 3 January 2008.
This is an administrative record, not a vessel. The Coast Guard created this MISLE entry and then marked it as superseded — the name itself says which record it points to. It is kept here because it exists in the record and nothing is deleted, but the inspection history of the hull lives under the other entry.
The 5 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 18 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 Offshore class in Maury's sources begin in 1978.
Share this recordDownload vessel cardDownload QRMaury, US Coast Guard vessel record for DUPLICATE OF HERCULES 350 (ON650426, HULL 707), retrieved 18 September 2026. mauryrecords.com/v/psix-800837.html
Documentation record
Tonnage as PSIX records itNot recorded
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.
A report is not offered for this hull: Its record holds only 1 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. Reports.
Inspection history · 5
3 January 2008Administrative Inspection
Administrative · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 3124109
27 June 2007COC-MODU Renew
Type not classified · Marine Safety Unit Port Arthur · USCG Heartland District (CGD-H) · Activity 2975576
22 September 2006COC-MODU Annual
Type not classified · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 2784687
29 January 2006Type not recorded
No type recorded · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 2611876
1 December 2005Type not recorded
No type recorded · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 2551078
Fire Fighting › Fixed Fire Detection System › Heat Detectors
Issued 27 June 2007Resolved
3rd paty survey of Firefighting and Lifesaving equipment dated 7 Jul 07 indicated that several of the heat sensors in the mud room are inoperable. The OIM indictated that the discrepencies are being addressed and parts are on order. A 3rd party/class report on the corrections will satisfy the discrepency.
Condition: Unknown
Action required: 705 - Other - as specified
Due 13 August 2007
Resolved 24 September 2007
Resolution: Received report from 3rd party survey stating that the parts were replaced.
Fire Fighting › Structural - A Class Divisions › Fire Doors
Issued 27 June 2007Resolved
A Class 'A' Fire Door to the stair tower is not properly closing. A class report or 3rd party survey will suffice for clearance of the deficiency.
Condition: Unknown
Action required: 705 - Other - as specified
Due 13 August 2007
Resolved 24 September 2007
Resolution: Received report from 3rd party surveyor stating the deficiency is clear.
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.