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OCEAN LEADER *

Mobile Offshore Drilling Unit · Offshore class · Built 1960s · USCG Heartland District (CGD-H) · Other hulls named OCEAN LEADER *

OCEAN LEADER * is a 1966 mobile offshore drilling unit. The Coast Guard has recorded 25 inspections since 1981, most recently in July 1993, along with 32 deficiencies.

Records from 1981 to 1993. Most recent: inspection, 15 July 1993.

Built
1966
Last inspected
15 July 1993
Documentation
Not in the documentation file of 10 September 2026
Inspections
25
Deficiencies
32 recorded · 0 without a recorded resolution
Controls
None recorded without a removal date

Identity

US Official No.
502222
IMO number
—
Call sign
WV9995
MISLE id
52511
Flag
UNITED STATES
MMSI
—
Maury page id
psix-52511

Inspections, by type

…physical examinations4
…administrative events3
…with no type recorded18
Years with a record 8 calendar years (1981–1993)
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 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

Tonnage as PSIX records it4077 - Regulatory (Subpart C or D), Net Ton
4077 - 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

15 July 1993 Permit to Proceed
Administrative · MSO MORGAN CITY · USCG Heartland District (CGD-H) · Activity 844280
4 May 1987 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1332853
30 March 1987 Administrative
Administrative · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1327553
3 June 1986 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1302831
2 June 1986 Deficiency Check
Physical examination · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 996481
21 May 1986 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 986710
1 May 1986 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1296262
21 March 1986 Re-Inspection
Physical examination · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1308774
20 September 1985 Deficiency Check
Physical examination · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1298172
17 September 1985 Deficiency Check
Physical examination · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 990839
11 September 1985 Credit Drydock
Administrative · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1296279
27 March 1985 Type not recorded
No type recorded · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 979734
20 December 1984 Type not recorded
No type recorded · MSO Corpus Christi · USCG Heartland District (CGD-H) · Activity 976986
9 May 1984 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1281456
9 May 1984 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1281760
12 April 1984 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1285011
4 April 1984 Type not recorded
No type recorded · MIO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1280453
12 October 1983 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1272201
15 September 1983 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 963461
22 April 1983 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 970648
27 October 1982 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1276768
5 June 1982 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1278192
22 April 1982 Type not recorded
No type recorded · MSO PORT ARTHUR · USCG Heartland District (CGD-H) · Activity 1277093
23 August 1981 Type not recorded
No type recorded · MSU GALVESTON · USCG Heartland District (CGD-H) · Activity 968689
21 May 1981 Type not recorded
No type recorded · MSU GALVESTON · USCG Heartland District (CGD-H) · Activity 968647

Deficiency record · 32

Engineering
Issued 21 March 1986 Resolved
PROVIDE STANDARD DISCHARGE CONNECTION PER 33CFR155.430. COMPLIANCE DATE IS21APR86.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Engineering
Issued 21 March 1986 Resolved
INSTALL PROTECTIVE GUARD ON EXHAUST FOR EMERGENCY FIRE PUMP. COMPLIANCE DATE IS 21APR86.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Lifesaving
Issued 21 March 1986 Resolved
COMPLETE PROPER REPAIRS TO FRACTURES IN LIFE BOAT NO. 1 LOCATED IN PORT BOWAREA WHERE BOAT SEATS TO ITS CRADLE.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Engineering
Issued 21 March 1986 Resolved
REPLACE MISSING DOG ON DECK HATCH TO STBD STOVE ROOM (IE LOCATED DRILL PIPEAREA.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Engineering
Issued 21 March 1986 Resolved
PROVIDE ON BOARD OILY WATER SEPERATING EQUIPMENT PER 33 CFR 155.400/33CFR 15.360 NO LATER THAN 02OCT1986.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Deck/Cargo
Issued 21 March 1986 Resolved
REPLACE BROKEN WINDOWS IN PORT CRANE CAB WITH SAFETY GLASSIN API STANDARDS.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Deck/Cargo
Issued 21 March 1986 Resolved
ICGB WITNESSED WEIGHT TEST TO BE COMPLETED ON PORT CRANE ONCE BOOM WINCH ISREPAIRED AND RE-INSTALLED.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Accommodation/Occupational Safety
Issued 21 March 1986 Resolved
INSTALL RELIEF VALVES ON HOT WATERHEATERS TO RELIEVE LESS THAN 100PSIG OR MAKE AVAILABLE FOR INTERNAL INSPECTION. COMPLIANCE DATE IS 21APR86.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Navigation
Issued 21 March 1986 Resolved
INSTALL STERN LIGHT ON SEPERATE CIRCUIT. COMPLIANCE DATE IS 21 APRIL 1986.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Construction/Loadline
Issued 21 March 1986 Resolved
REPAIR WATERTIGHT DOOR TO MUD PIT ROOM ON THE MAIN DECK. COMPLIANCE DATE IS 21APR86.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Electrical
Issued 21 March 1986 Resolved
REMOVE RENEWABLE LINK FUSES ON GENERAL ALARM CIRCUIT WITH STANDARD FUSES. COMPLIANCE DATE IS 21APR86.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Accommodation/Occupational Safety
Issued 21 March 1986 Resolved
REPAIR/RENEW DECK PLATING AND SUPPORTS IN MUD PIT ROOM. COMPLIANCE DATE IS 21APR86.
Condition: Unknown
Due 21 March 1986
Resolved 21 March 1986
Construction/Loadline
Issued 17 September 1985 Resolved
MAKE PERMANENT REPAIRS TO THE PROPELLER DAMAGE ON THE MAT TANK #5 PORT.
Condition: Unknown
Due 17 September 1985
Resolved 17 September 1985
Construction/Loadline
Issued 11 September 1985 Resolved
MAKE THE RIG MAT TANKS AVAILABLE FOR INSPECTION OR PROVIDE DOCUMENTATION OFU. S. COAST GUARD INTERNAL INSPECTION OF SAME WITHIN THE LAST 4 YEARS PRIORTO COMMENCING DRILLING OPERATIONS.
Condition: Unknown
Due 11 September 1985
Resolved 11 September 1985
Construction/Loadline
Issued 11 September 1985 Resolved
MAKE EFFECTIVE REPAIRS TO THE CRACK ON THE STARBOARD LEG "LEG TO WRAPPER" WELD IN ACCORDANCE WITH VESSEL CONSTRUCTION PORTFOLIO PRIOR TO COMMENCING DRILLING OPERATIONS.
Condition: Unknown
Due 11 September 1985
Resolved 11 September 1985
Construction/Loadline
Issued 11 September 1985 Resolved
COMPLETE THE UNDERWATER SURVEY OF THE VESSEL DURING THE NEXT MOVEMENT. ITEMS THAT REMAIN ARE AS FOLLOWS: SIDES OF MAT, SCOUR SKIRT AND THE BOTTOMOF THE MAT.
Condition: Unknown
Due 11 September 1985
Resolved 11 September 1985
Construction/Loadline
Issued 11 September 1985 Resolved
MAKE AVAILABLE FOR INSPECTION TANKS 6 PORT AND STARBOARD AND 1 PORT AND STARBOARD PRIOR TO COMMENCING DRILLING OPERATIONS.
Condition: Unknown
Due 11 September 1985
Resolved 11 September 1985
Electrical
Issued 20 December 1984 Resolved
RENEW MISSING BOLT IN EXPLOSION PROOF ELECTRIC FIXTURE IN MUD PIT ROOM.
Condition: Unknown
Due 20 December 1984
Resolved 20 December 1984
Accommodation/Occupational Safety
Issued 12 April 1984 Resolved
REPLACE OR REPAIR ALL DEFECTIVE BUNK LIGHTS.
Condition: Unknown
Due 12 April 1984
Resolved 12 April 1984
Construction/Loadline
Issued 12 April 1984 Resolved
RENEW WASTED WINDOW MOUNTS TO TOOL PUSHER'S WINDOW.
Condition: Unknown
Due 12 April 1984
Resolved 12 April 1984
Construction/Loadline
Issued 12 April 1984 Resolved
CROP TO GOOD METAL AND RENEW WASTED UNDERDECK ANGLE IN WAY OF HELIPORT; NEAR WASTED DIAGONAL IDENTIFIED IN ITEM #2.
Condition: Unknown
Due 12 April 1984
Resolved 12 April 1984
Accommodation/Occupational Safety
Issued 12 April 1984 Resolved
REMOVE OR PROPERLY INSTALL WINDOW AIR CONDITIONER UNIT IN CONTROL ROOM.
Condition: Unknown
Due 12 April 1984
Resolved 12 April 1984
Construction/Loadline
Issued 12 April 1984 Resolved
RENEW WASTED LIP TO BOTTOM OF DOOR TO CONTROL ROOM.
Condition: Unknown
Due 12 April 1984
Resolved 12 April 1984
Construction/Loadline
Issued 12 April 1984 Resolved
REPAIR WASTED VENT ON BOW BELOW HELIPORT DECK.
Condition: Unknown
Due 12 April 1984
Resolved 12 April 1984
Accommodation/Occupational Safety
Issued 12 April 1984 Resolved
REPAIR ALL DEFECTIVE CEILING TILES ON RIG AS NECESSARY.
Condition: Unknown
Due 12 April 1984
Resolved 12 April 1984
Construction/Loadline
Issued 12 April 1984 Resolved
RENEW WASTED PORT DIAGONAL AFT OF STRENGTH MEMBER TO HELIPORT OR REMOVE WASTED SECTION AND SHOW NO STRUCTURAL STRENGTH HAS BEEN AFFECTED.
Condition: Unknown
Due 12 April 1984
Resolved 12 April 1984
Documentation
Issued 12 April 1984 Resolved
PROVIDE ON BOARD MODU THE CONSTRUCTION PORTFOLIO REQUIRED BY THE CERTIFI- CATE OF INSPECTION.
Condition: Unknown
Due 12 April 1984
Resolved 12 April 1984
Unknown
Issued 12 April 1984 Resolved
THE FOLLOWING DEFICIENCIES ARE FOR THE OCEAN LEADER, DN502222.
Condition: Unknown
Due 12 April 1984
Resolved 12 April 1984
Unknown
Issued 22 April 1983 Resolved
PROVIDE ON BOARD THE VESSEL 4 CERTIFICATED LIFEBOATMEN.
Condition: Unknown
Due 22 April 1983
Resolved 22 April 1983
Unknown
Issued 22 April 1983 Resolved
CONDUCT FIRE AND ABANDON RIG DRILL IN THE PRESENCE OF A COAST GUARD MARINE INSPECTOR.
Condition: Unknown
Due 22 April 1983
Resolved 22 April 1983
Unknown
Issued 22 April 1983 Resolved
PROVIDE THE FOLLOWING DOCUMENTS ABOARD THE VESSEL: VALID LOADLINE CERTIFI-CATE, CURRENT STABILITY LETTER AND APPROVED OPERATING MANUAL.
Condition: Unknown
Due 22 April 1983
Resolved 22 April 1983
Unknown
Issued 22 April 1983 Resolved
COMPLETE THE WORKLIST ISSUED ON 22 APRIL 1983.
Condition: Unknown
Due 22 April 1983
Resolved 22 April 1983

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.