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DUAL RIG 83

Mobile Offshore Drilling Unit · Offshore class · Built 1970s · USCG Heartland District (CGD-H)

DUAL RIG 83 is a 1979 mobile offshore drilling unit. The Coast Guard has recorded 25 inspections since 1982, most recently in January 1991, along with 40 deficiencies.

Records from 1982 to 1991. Most recent: inspection, 25 January 1991.

Built
1979
Last inspected
25 January 1991
Documentation
Not in the documentation file of 10 September 2026
Inspections
25
Deficiencies
40 recorded · 0 without a recorded resolution
Controls
None recorded without a removal date

Identity

US Official No.
607885
IMO number
—
Call sign
—
MISLE id
50309
Flag
UNITED STATES
MMSI
—
Maury page id
psix-50309

Inspections, by type

…physical examinations4
…administrative events7
…with no type recorded14
Years with a record 9 calendar years (1982–1991)
The 25 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 35 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.

Documentation record

Tonnage as PSIX records it3015 - Regulatory (Subpart C or D), Net Ton
3015 - Regulatory (Subpart C or D), Gross 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.

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. Reports.

Inspection history · 25

25 January 1991 Administrative
Administrative · MSU GALVESTON · USCG Heartland District (CGD-H) · Activity 1224170
4 June 1990 Certificate of Compliance
Administrative · MSU GALVESTON · USCG Heartland District (CGD-H) · Activity 1223493
17 April 1990 Certificate of Compliance
Administrative · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1217945
16 April 1990 Administrative
Administrative · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 924574
14 June 1989 Hull Examination · COI Inspection
Physical examination · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 898549
27 April 1988 Re-Inspection
Physical examination · MSO Mobile · USCG Heartland District (CGD-H) · Activity 1041917
28 October 1987 Administrative
Administrative · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 1018590
1 July 1987 COI Inspection · Hull Examination
Physical examination · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 1318778
22 May 1987 Administrative
Administrative · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1331743
20 January 1987 Administrative
Administrative · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1319698
12 September 1985 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 988916
9 June 1985 Deficiency Check
Physical examination · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 985297
9 May 1985 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1291758
28 February 1985 Type not recorded
No type recorded · MSU GALVESTON · USCG Heartland District (CGD-H) · Activity 1288020
24 January 1985 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 979267
16 January 1985 Type not recorded
No type recorded · MSO Mobile · USCG Heartland District (CGD-H) · Activity 1285289
27 April 1984 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 973136
11 April 1984 Type not recorded
No type recorded · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 1281878
14 February 1984 Type not recorded
No type recorded · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 1279976
2 September 1983 Type not recorded
No type recorded · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 968894
9 April 1983 Type not recorded
No type recorded · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 1276686
9 April 1983 Type not recorded
No type recorded · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 1281147
17 July 1982 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 966815
15 July 1982 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1274041
14 June 1982 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 966505

Deficiency record · 40

Documentation
Issued 4 June 1990 Resolved
Unknown Component - Unknown Cause/Condition
Condition: Unknown
Due 4 June 1990
Resolved 4 June 1990
Documentation
Issued 4 June 1990 Resolved
Unknown Component - Unknown Cause/Condition
Condition: Unknown
Due 4 June 1990
Resolved 4 June 1990
Lifesaving
Issued 27 April 1988 Resolved
PROVIDE PFD LIGHTS FOR ALL PFD'S.
Condition: Unknown
Due 27 April 1988
Resolved 27 April 1988
Navigation
Issued 27 April 1988 Resolved
PROVE OPERATION OF DRILL FLOOR AIR RECIEVER POP-OFF VALVE.
Condition: Unknown
Due 27 April 1988
Resolved 27 April 1988
Electrical
Issued 27 April 1988 Resolved
PROVE PROPER OPERATION OF EMERGENCY GENERATOR.
Condition: Unknown
Due 27 April 1988
Resolved 27 April 1988
Lifesaving
Issued 27 April 1988 Resolved
REPAIR AS NECESSARY AND PROVE OPERATIONS OF ELECTRICAL CONTROLS AND LIMIT SWITCHES TO NUMBER TWO(2) LIFEBOAT WINCH AND NUMBER ONE(1) LIFEBOAT WINCH.
Condition: Unknown
Due 27 April 1988
Resolved 27 April 1988
Electrical
Issued 27 April 1988 Resolved
REPAIR AS NECESSARY AND PROVE OPERATION OF GENERAL ALARMS IN GENERATOR ROOMAND FIRST DECK QUARTERS AND PORT SIDE BOOBY HATCH.
Condition: Unknown
Due 27 April 1988
Resolved 27 April 1988
Lifesaving
Issued 27 April 1988 Resolved
REPAIR AS NECESSARY AND PROVE OPERATIONS OF COOLING SYSTEM,STEERING SYSTEM AND REVERSE GEAR TO NUMBER ONE(1) LIFEBOAT.
Condition: Unknown
Due 27 April 1988
Resolved 27 April 1988
Documentation
Issued 27 April 1988 Resolved
PROVIDE ON BOARD A CG APPROVED CONSTRUCTION PORTFOLIO.
Condition: Unknown
Due 27 April 1988
Resolved 27 April 1988
Lifesaving
Issued 27 April 1988 Resolved
PROVIDE ON BOARD AT ALL TIMES THE REQUIRED NUMBER OF CERTIFICATED LIFEBOAT-MEN.
Condition: Unknown
Due 27 April 1988
Resolved 27 April 1988
Documentation
Issued 27 April 1988 Resolved
PROVIDE CORRECT OWNER/ OPERATOR ADDRESS CERTIFICATE OF DOCUMENTATION.
Condition: Unknown
Due 27 April 1988
Resolved 27 April 1988
Deck/Cargo
Issued 9 May 1985 Resolved
PROVIDE PROOF OF TEST DATE FOR OIL TRANSFER HOSE OR REPLACE WITH NEW TESTED46 CFR 15.800
Condition: Unknown
Due 9 May 1985
Resolved 9 May 1985
Lifesaving
Issued 9 May 1985 Resolved
HAVE THE TWO (2) INFLATIBLE LIFERAFTS WITH HYDROSTATIC RELEASE SERVICED AT A USCG APPROVED SERVICING FACILITY. 46 CFR 107.231(B)
Condition: Unknown
Due 9 May 1985
Resolved 9 May 1985
Unknown
Issued 9 May 1985 Resolved
PROVIDE ONE (1) BURN BLANKET FOR HOSPITAL SPACE. 46 CFR 108.497
Condition: Unknown
Due 9 May 1985
Resolved 9 May 1985
Lifesaving
Issued 9 May 1985 Resolved
UPON RECEIPT OF USCG MMT (8TH DISTRICT) APPROVAL OF NEW LIFEBOAT STATION, RESUBMIT LIFESAVING AND FIRE CONTROL PLAN FOR APPROVAL. 46 CFR 107.305.
Condition: Unknown
Due 9 May 1985
Resolved 9 May 1985
Engineering
Issued 9 May 1985 Resolved
AT NEXT SCHEDULED SPECIAL EXAM IN LIEU OF DRYDOCKING AT NEXT RIG MOVE, MAKEAVAILABLE 3 RIG AIR RECEIVERS FOR INTERNAL EXAMINATION AND RELIEF VALVE TESTING IN THE PRESENCE OF A USCG INSPECTOR. 46 CFR 61.10.
Condition: Unknown
Due 9 May 1985
Resolved 9 May 1985
Deck/Cargo
Issued 9 May 1985 Resolved
PROVIDE EVIDENCE TO [name withheld], LA THAT BOTH CRANES HAVE HAD QUADRENNIAL AND ANNUAL CRANE INSPECTION BY A USCG APPROVED CRANE CERTIFYINGAUTHORITY. 46 CFR 107.258
Condition: Unknown
Due 9 May 1985
Resolved 9 May 1985
Unknown
Issued 9 May 1985 Resolved
PROVIDE EVIDENCE THAT THE TWO (2) NEW MSA 02/LEL METERS ARE EITHER FM/UL/ OR CS APPROVED OR REPLACED THESE METERS WITH APPROVED METERS. 46 CFR 108.497
Condition: Unknown
Due 9 May 1985
Resolved 9 May 1985
Lifesaving
Issued 9 May 1985 Resolved
PROVIDE TWO (2) ADITIONAL WATER LIGHTS WITH LANYARDS FOR TWO (2) RINGBUOYS.46 CFR 108.515
Condition: Unknown
Due 9 May 1985
Resolved 9 May 1985
Deck/Cargo
Issued 9 May 1985 Resolved
PROVIDE APPROVED OIL TRANSFER PROCEDURES AND POST SAME ON RIG. 46 CFR 155.720
Condition: Unknown
Due 9 May 1985
Resolved 9 May 1985
Unknown
Issued 9 May 1985 Resolved
THE BELOW LISTED DEFICIENCIES PERTAIN TO THE MODU KEYES 150, O.N. 607885. THE BELOW LISTED ITEMS ARE TO BE COMPLIED WITH BY 09JUN85.
Condition: Unknown
Due 9 May 1985
Resolved 9 May 1985
Lifesaving
Issued 28 February 1985 Resolved
PERFORM AN ACCEPTABLE NDT OF WELDING DONE IN THE INSTALLATION OF THE ESCAPECAPSULE DAVIT ASSEMBLY. THESE REQUIREMENTS ARE TO BE MADE TO THE SATISFACTION OF THE COGNIZANT OCMI AND ATTENDING MARINE INSPECTOR.
Condition: Unknown
Due 28 February 1985
Resolved 28 February 1985
Unknown
Issued 28 February 1985 Resolved
SUBMIT PROPOSAL TO REMOVE OBSTRUCTION IN WAY OF FLIGHT PATH TO HELOCOPTER FLIGHT DECK(ESCAPE CAPSULE WINCH ASSEMBLY AND GUARD RAIL).
Condition: Unknown
Due 28 February 1985
Resolved 28 February 1985
Lifesaving
Issued 28 February 1985 Resolved
SUBMIT PLANS FOR ESCAPE CAPSULE INSTALLATION TO CCGD8(MMT) NEW ORLEANS FOR PLAN REVIEW ANS APPROVAL.
Condition: Unknown
Due 28 February 1985
Resolved 28 February 1985
Unknown
Issued 27 April 1984 Resolved
THE FOLLOWING DEFICIENCIES PERTAIN TO THE MODU KEYES 150, DN6078845
Condition: Unknown
Due 27 April 1984
Resolved 27 April 1984
Electrical
Issued 27 April 1984 Resolved
REPAIR PURGE AIR ALARM IN THE DRILLERS CONSOLE. 46CFR111.92
Condition: Unknown
Due 27 April 1984
Resolved 27 April 1984
Fire Fighting
Issued 27 April 1984 Resolved
PROVIDE A B-V SEMI PORTABLE FIRE EXTINGUISHER FOR THE HELICOPTER DECK ACCESS ROUTE. 46CFR108.493.
Condition: Unknown
Due 27 April 1984
Resolved 27 April 1984
Electrical
Issued 27 April 1984 Resolved
PROVIDE A GENERAL ALARM IN THE MAIN GENERATOR SPACE. 46CFR113.25
Condition: Unknown
Due 27 April 1984
Resolved 27 April 1984
Lifesaving
Issued 14 June 1982 Resolved
PROVIDE RIG WITH (1) ONE RING BOUY WITH SMOKE ATTACHED.
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Electrical
Issued 14 June 1982 Resolved
PROVIDE BUNK LIGHTS AND COVERS FOR QUARTERS AREAS
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Electrical
Issued 14 June 1982 Resolved
REPAIR OR REPLACE THE DRAWWORKS VENTILATION INTERLOCK
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Electrical
Issued 14 June 1982 Resolved
LOCATE AND REPAIR ELECTRICAL GROUND INDICATED BY EMERGENCY GENERATOR CIR- CUIT GROUND DETECTOR.
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Electrical
Issued 14 June 1982 Resolved
REPAIR OR REPLACE OVERSPEED TRIP ON #2 GENERATOR ENGINE.
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Construction/Loadline
Issued 14 June 1982 Resolved
APPLY NON-SKID TO THE HELO DECK.
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Electrical
Issued 14 June 1982 Resolved
REMOVE PLASTIC TIE WRAPS FROM ELECTRICAL WIRING ADJACENT TO SHALE SHAKER AND PROPERLY STRAP.
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Accommodation/Occupational Safety
Issued 14 June 1982 Resolved
REMOVE TAPE FROM FLEX VENT OVER DRAW WORKS MOTORS AND RENEW WITH PROPER FLEX MATERIAL.
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Electrical
Issued 14 June 1982 Resolved
MAKE THE SWACO CHOKE PANEL SUITABLE FOR INSTALLATION IN HAZARDOUS AREA.
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Documentation
Issued 14 June 1982 Resolved
PROVIDE RIG WITH APPROVED FIRE CONTROL AND SAFETY PLAN
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Construction/Loadline
Issued 14 June 1982 Resolved
COMPLETE DRYDOCK EXAM
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982
Unknown
Issued 14 June 1982 Resolved
PROVIDE RIG WITH APPROVED HAZARDOUS LOCATION PLAN.
Condition: Unknown
Due 14 June 1982
Resolved 14 June 1982

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.