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VIKING RIG IV

Mobile Offshore Drilling Unit · Offshore class · Built 1980s · USCG Heartland District (CGD-H) · Other hulls named VIKING RIG IV

VIKING RIG IV is a 1981 mobile offshore drilling unit. The Coast Guard has recorded 17 inspections since 1981, most recently in September 1993, along with 37 deficiencies.

Records from 1981 to 1993. Most recent: inspection, 11 September 1993.

Built
1981
Last inspected
11 September 1993
Documentation
No Operation - PM · documentation file of 10 September 2026
Inspections
17
Deficiencies
37 recorded · 0 without a recorded resolution
Controls
None recorded without a removal date

Identity

US Official No.
643417
IMO number
—
Call sign
—
MISLE id
53005
Flag
UNITED STATES
MMSI
—
Maury page id
psix-53005

Inspections, by type

…physical examinations3
…with no type recorded14
Years with a record 7 calendar years (1981–1993)
The 17 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 33 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

Registered dimensions (L × B × D)174.0 ft × 162.5 ft × 17.5 ft
Registered tonnagegross 3,153 / net 3,153
ITC dimensions (L × B × D)Not recorded
ITC tonnageNot recorded
BuilderBAKER MARINE CORP. · SAN PATRICIO COUNTY TX, UNITED STATES · built 1981
Hull materialSteel
PropulsionNot recorded
Hull shapeNot recorded
Hull configurationNot recorded
Hailing portNEW ORLEANS, LA
Trade endorsementsCoastwise, unrestricted
DocumentationNo Operation - PM · issued 5 January 1983
Service, as the file records itMobile Offshore Drilling Unit
Hull formbarge (Maury's inference from propulsion, hull shape, material and length, rule hf-1; not a recorded fact)
Tonnage as PSIX records it3153 - Regulatory (Subpart C or D), Net Ton
3153 - Regulatory (Subpart C or D), Gross Ton
Every line above is a field of the National Vessel Documentation Center's file as served by NOAA Fisheries, dated 10 September 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.

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 · 17

11 September 1993 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 849233
3 July 1986 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1305085
6 February 1986 Deficiency Check
Physical examination · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1309146
6 December 1985 COI Inspection
Physical examination · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 990534
18 November 1985 Deficiency Check
Physical examination · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1301853
23 January 1985 Type not recorded
No type recorded · MSU GALVESTON · USCG Heartland District (CGD-H) · Activity 1286843
13 February 1984 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1279606
3 February 1984 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1278577
30 January 1984 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1278566
29 December 1983 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1279552
9 December 1983 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 972370
9 December 1983 Type not recorded
No type recorded · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 1280800
9 April 1983 Type not recorded
No type recorded · MSO Mobile · USCG Heartland District (CGD-H) · Activity 967067
3 March 1983 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 968367
21 December 1982 Type not recorded
No type recorded · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 964761
30 August 1982 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 970556
11 December 1981 Type not recorded
No type recorded · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 965694

Deficiency record · 37

Fire Fighting
Issued 11 September 1993 Resolved
PROVE PROPER OPERATION OF FIRE PUMP RELIEF VALVE.
Condition: Unknown
Due 11 September 1993
Resolved 11 September 1993
Electrical
Issued 11 September 1993 Resolved
PROVE PROPER OPERATION OF #3 GENERATOR EMERGENCY SHUTDOWN.
Condition: Unknown
Due 11 September 1993
Resolved 11 September 1993
Electrical
Issued 6 December 1985 Resolved
MODIFY THE PRESENT VENTILATION SYSTEM FOR THE MUD PIT ROOM TO STOP THE DISCHARGE OF GASES FROM THE MUD PIT ROOM INTO THE MUD PUMP ROOM AS PER 46CFR108.185(A).
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Deck/Cargo
Issued 6 December 1985 Resolved
REPAIR THE INOPERATIVE FORWARD CONTROL SWITCH ON THE STARBOARD ANCHOR WINDLASS
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Fire Fighting
Issued 6 December 1985 Resolved
CONDUCT A HYDROSTATIC TEST ON OR REPLACE THE SCBA BOTTLE ON THE PILOTHOUSE FIREMANS OUTFIT
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Accommodation/Occupational Safety
Issued 6 December 1985 Resolved
POST RED FOX MANUFACTURER'S INSTRUCTIONS ON THE MSD UNIT
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Deck/Cargo
Issued 6 December 1985 Resolved
TEST IN THE PRESENCE OF A US COAST GUARD MARINE INSPECTOR THE FOLLOWING RELIEF VALVES: 2 RIG AIR RECIEVERS, DRILL FLOOR AIR RECIEVER, #2 P-TANK,AND THE ROSS HILL BOP RELIEF VALVE
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Construction/Loadline
Issued 6 December 1985 Resolved
REPAIR/REPLACE THE FOLLOWING WATER TIGHT DOOR POSITION INDICATING ALARM SWITCHES: (A) SACK ROOM (B) MUD PIT ROOM
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Construction/Loadline
Issued 6 December 1985 Resolved
REPAIR/REPLACE THE INOPERATIVE #2 SANITARY PUMP
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Construction/Loadline
Issued 6 December 1985 Resolved
REPAIR/REPLACE THE CRACKED HOUSING ON THE #1 MUD MIXING PUMP MOTOR
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Electrical
Issued 6 December 1985 Resolved
REMOVE THE PRESENT GAI-TRONICS SPEAKER IN THE MUD PIT ROOM, AND REPLACE WITH ONE THAT IS CLASSIFIED FOR HAZARDOUS LOCATIONS.
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Lifesaving
Issued 6 December 1985 Resolved
SHOW EVIDENCE OF THE LAST ANNUAL FUEL CHANGE OF BOTH THE PORT AND STARBOARDLIFEBOATS, OR CHANGE THE FUEL IN THE SAME
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Deck/Cargo
Issued 6 December 1985 Resolved
PROVIDE FOR AN INTERNAL EXAMINATION BY A US COAST GUARD MARINE INSPECTOR THE FOLLOWING PRESSURE VESSELS: DRY BULK TANKS #1-6 DRILL FLOOR AIR RECEIVER
Condition: Unknown
Due 6 December 1985
Resolved 6 December 1985
Lifesaving
Issued 23 January 1985 Resolved
LAUNCH, TEST AND RETRIEVE BOTH LIFEBOATS IAW 46 CFR 109.217 WITHIN THIRTY (30) DAYS AND PROVIDE RESULTS TO LOCAL OCMI.
Condition: Unknown
Due 23 January 1985
Resolved 23 January 1985
Accommodation/Occupational Safety
Issued 23 January 1985 Resolved
PROVIDE HANRAIL AT STARBOARD SIDE AFT AT DRILL FLOOR SUBSTRUCTURE.
Condition: Unknown
Due 23 January 1985
Resolved 23 January 1985
Electrical
Issued 23 January 1985 Resolved
REMOVE, REPAIR, OR REPLACE WIRING AT VARIOUS LOCATIONS ON DRILL FLOOR IAW 46 CFR 111.105 AS NECESSARY.
Condition: Unknown
Due 23 January 1985
Resolved 23 January 1985
Electrical
Issued 23 January 1985 Resolved
REPLACE ONE (1) RELAY CONTROLLED LIGHT IN ENGINE ROOM AND TWO (2) RELAY CONTROLLED LIGHTS IN SACK ROOM.
Condition: Unknown
Due 23 January 1985
Resolved 23 January 1985
Unknown
Issued 23 January 1985 Resolved
REPAINT PERIMETER STRIPE ON HELO DECK IAW 46 CFR 108.241.
Condition: Unknown
Due 23 January 1985
Resolved 23 January 1985
Unknown
Issued 23 January 1985 Resolved
REPLACE HOSES TO SENDER FOR DRILL BIT WEIGHT INDICATOR ON DRILL FLOOR. THESE REQUIREMENTS ARE TO BE MADE TO THE SATISFACTION OF THE COGNIZANT OCMI.
Condition: Unknown
Due 23 January 1985
Resolved 23 January 1985
Fire Fighting
Issued 23 January 1985 Resolved
SERVICE ALL FOUR (4) OXYGEN BOTTLES FOR BOTH FIREMANS OUTFITS WITHIN THIRTY(30) DAYS.
Condition: Unknown
Due 23 January 1985
Resolved 23 January 1985
Fire Fighting
Issued 23 January 1985 Resolved
RECHARGE AND PROVE OPERATIONAL ONE (1) 02/EXPLOSIVE METER LOCATED IN #2 FIREMANS OUTFIT WITHIN SEVEN (7) DAYS.
Condition: Unknown
Due 23 January 1985
Resolved 23 January 1985
Electrical
Issued 23 January 1985 Resolved
REPLACE BATTERY CHARGER FOR BATTERIES TO GENERAL ALARM SYSTEM.
Condition: Unknown
Due 23 January 1985
Resolved 23 January 1985
Unknown
Issued 9 December 1983 Resolved
PRESSURE TEST RELIEF VALVE FOR DRILL FLOOR AIR RECEIVER.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
HYDRO TEST OR INTERNALLY EXAMINE AIR RECEIVER FOR DRILL FLOOR.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
PROVIDE NAMEPLATES FOR ELECTRICAL EQUIPMENT AS REQUIRED BY 111.30-1(H).
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
PROVIDE PROPER PACKING FOR BULKHEAD CABLE CONDUIT BOXES FROM GENERATOR ROOMTO PUMP ROOM AND FROM MUD PIT ROOM TO MUD PUMP ROOM.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
PROVIDE LABEL PLATES AND CIRCUIT DIRECTORY CARDS FOR DISTRIBUTION PANELS ASREQUIRED BY 111.30-1(H).
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
PROVIDE CONTAINMENT FOR WASTE OIL TANK VENT LINE ON MAIN DECK.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
REMOVE WMCO INSTS INC. DEVICE FORM MUD PIT ROOM OR PROVE THAT ALARM HORN ISEXPLOSION PROOF & THAT THE DEVICE MEETS PURGE AIR REQUIREMENTS OF NFPA 496.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
THE FOLLOWING DEFICIENCIES ARE FOR THE CHARGER I, DN643417.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
REPAIR THE DRAWWORKS LOSS OF BLOWER AUTOMATIC SHUTDOWN.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
WMCO GAS DETECTOR ON DRILL FLOOR DOES NOT HAVE WARNING SIGN REQUIRED BY NFPA 496.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
REROUTE THE DEGASSER VENT OUTLET SO IT VENTS UPWARD.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
INSTALL A WARNING SIGN AND LOSS OF PURGE AIR ALARM FOR THE DRILL FLOOR REMOTE SHUTDOWN PANEL.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
CONDUCT AN UNDERWATER SURVEY OF THE SPUD CANS IN ACCORDANCE WITH 46 CFR 107.267.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Unknown
Issued 9 December 1983 Resolved
VENTILATE THE DRILL WATER TANKS AND MAKE AVAILABLE FOR INTERNAL INSPECTION.
Condition: Unknown
Due 9 December 1983
Resolved 9 December 1983
Documentation
Issued 11 December 1981 Resolved
PROVIDE ON BOARD THE VESSEL A CONSTRUCTION PORTFOLIO.
Condition: Unknown
Due 1 July 1982
Resolved 11 December 1981

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.