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NOBLE DISCOVERER

Mobile Offshore Drilling Unit · Offshore class · Built 1960s · USCG Arctic District (CGD-A)

NOBLE DISCOVERER is a 1966 mobile offshore drilling unit. The Coast Guard has recorded 17 inspections since 1984, most recently in October 2015, along with 39 deficiencies and 1 operational control.

Records from 1984 to 2015. Most recent: inspection, 11 October 2015.

Built
1966
Last inspected
11 October 2015
Documentation
Not in the documentation file of 10 September 2026
Inspections
17
Deficiencies
39 recorded · 0 without a recorded resolution
Controls
None recorded without a removal date
Inspected with
3 other vessels

Identity

US Official No.
—
IMO number
6608608 View on MarineTraffic leaves Maury; a third-party site, nothing from it is stored here
Call sign
A8XM6
MISLE id
221595
Flag
LIBERIA
MMSI
—
Maury page id
psix-221595

Inspections, by type

…physical examinations6
…administrative events1
…with no type recorded10
Years with a record 4 calendar years (1984–2015)
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 11 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 it10264 - Regulatory (Subpart C or D), Gross Ton
14051 - Convention (Subpart B), Gross Ton
15296 - Dead Weight, Metric Ton
7627 - Regulatory (Subpart C or D), Net Ton
4216 - Convention (Subpart B), Net Ton
22956 - Displacement, Metric 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.

Inspected as a tow unit · 3

The Coast Guard recorded this vessel and the following in the same inspection activity — normally a tug and the barges in its tow. A recreational or unclassed hull in the same activity is held and not published, so it does not appear here: these lists are a floor, not a complete manifest.

CAPT BOWE Towing Vessel · MISLE 138796 · 14 July 2012 · activity 4383747GYRFALCON Towing Vessel · MISLE 419595 · 14 July 2012 · activity 4383747LAUREN FOSS Towing Vessel · MISLE 598017 · 14 July 2012 · activity 4383747

Inspection history · 17

11 October 2015 ISPS III Exam · Ballast Water Examination · NPV Safety Exam
Physical examination · Marine Safety Unit Dutch Harbor · USCG Arctic District (CGD-A) · Activity 5740420
21 July 2015 Type not recorded
No type recorded · Sector Puget Sound · USCG Northwest District (CGD-NW) · Activity 5191416
21 July 2015 Type not recorded
No type recorded · Sector Puget Sound · USCG Northwest District (CGD-NW) · Activity 5191555
21 July 2015 Type not recorded
No type recorded · Sector Puget Sound · USCG Northwest District (CGD-NW) · Activity 5191605
21 July 2015 Type not recorded
No type recorded · Sector Puget Sound · USCG Northwest District (CGD-NW) · Activity 5191677
22 July 2012 Type not recorded
No type recorded · Sector Western Alaska and U.S. Arctic · USCG Arctic District (CGD-A) · Activity 4527872
14 July 2012 Type not recorded
No type recorded · Marine Safety Unit Dutch Harbor · USCG Arctic District (CGD-A) · Activity 4383747
12 July 2012 MARPOL Annex I Examination
Physical examination · Marine Safety Unit Dutch Harbor · USCG Arctic District (CGD-A) · Activity 4377938
29 June 2012 Deficiency Check
Physical examination · Sector Western Alaska and U.S. Arctic · USCG Arctic District (CGD-A) · Activity 4366617
24 June 2012 Type not recorded
No type recorded · Sector Puget Sound · USCG Northwest District (CGD-NW) · Activity 4356600
19 June 2012 Plan Review (Other than "T")
Administrative · Sector Western Alaska and U.S. Arctic · USCG Arctic District (CGD-A) · Activity 4356804
21 May 2012 COC-MODU Renew · Deficiency Check · ISPS II Exam
Physical examination · Sector Puget Sound · USCG Northwest District (CGD-NW) · Activity 4318091
12 November 2007 Deficiency Check
Physical examination · U.S. COAST GUARD FORCES MICRONESIA/SECTOR GUAM · USCG Oceania District (CGD-O) · Activity 3097208
8 October 2007 Deficiency Check
Physical examination · Marine Safety Unit Dutch Harbor · USCG Arctic District (CGD-A) · Activity 3077164
7 October 2007 Type not recorded
No type recorded · Marine Safety Unit Dutch Harbor · USCG Arctic District (CGD-A) · Activity 3085770
25 September 1984 Type not recorded
No type recorded · MSU GALVESTON · USCG Heartland District (CGD-H) · Activity 1282264
16 April 1984 Type not recorded
No type recorded · MSU GALVESTON · USCG Heartland District (CGD-H) · Activity 973529

Deficiency record · 39

Operations/Management › Drills/Instruction › Fire
Issued 6 June 2012 Resolved
2020, 2025 - Fire drills, abandon ship drills - Periodic drills should be conducted simulating the emergency conditions included on the muster list. Vessel failed to demonstrate proper fire and abondon ship drills - MODU 1979 10.6.3
Action required: 17 - Rectify deficiencies prior to departure
Resolved 11 June 2012
Resolution: Conducted fire and abandon drill on the rig. Fire was held in the steering gear room. Fire & abandon drill SAT.
Accommodation/Occupational Safety › Occupational Safety › Deck Rail
Issued 6 June 2012 Resolved
0999 - Other (safety in general) - To prevent persons from falling overboard openings should be provided with rails. No permanent railing on periphery near Halliburton equipment - MODU 197910.10
Action required: 17 - Rectify deficiencies prior to departure
Resolved 20 June 2012
Resolution: 20JUN2012 - Inspectors from Sector Puget Sound observed new railings installed near Halliburton equipment.
Electrical › Lighting (emergency) › Lighting Fixture
Issued 6 June 2012 Resolved
0945 - Emergency lighting, etc. - Emergency lighting for transitional phase provided for accommodation areas. No lights provided in accommodation stairwells - MODU 1979 5.3.4.1
Action required: 17 - Rectify deficiencies prior to departure
Resolved 19 June 2012
Resolution: 19JUN2012 - Inspectors from Sector Puget Sound observed operational transitional lighting installed in accommodation stairwells.
Electrical › Lighting (emergency) › Lighting Fixture
Issued 6 June 2012 Resolved
0945 - Emergency lighting, etc. - Emergency lighting and emergency lighting for transitional phase provided for machinery spaces. No emergency or transitional phase lighting in starboard lower level engine room or engine room main egress ladder - MODU 1979 5.3.2.1.3 and 5.3.4.1
Action required: 17 - Rectify deficiencies prior to departure
Resolved 20 June 2012
Resolution: 20JUN2012 - Inspectors from Sector Puget Sound observed operational transitional lighting installed in the engine room.
Electrical › Lighting (emergency) › Lighting Fixture
Issued 6 June 2012 Resolved
0945 - Emergency lighting, etc. - Emergency lighting to be provided in all accom alleyways and exits. Some emergency lights did not work and some were not marked - MODU 1979 5.3.2.2
Due 6 July 2012
Resolved 20 June 2012
Resolution: 20JUN2012 - Inspectors observed operational emergency lighting in accommodation areas.
Electrical › Electric Generation Source (service) › Panelboard
Issued 6 June 2012 Resolved
1060 - Machingery alarm controls - Machinery to be provided with alarms in case of failures. Gen #6 reverse power relay visual indicator does not work - MODU 1979 4.2.7
Due 6 July 2012
Resolved 11 June 2012
Resolution: Bulb was replaced and illuminates properly.
Electrical › Electric Generation Source (service) › Panelboard
Issued 6 June 2012 Resolved
1060 - Machinery controls alarm - Machinery to be provided with alarms in case of failures. Gen #3 running visual indicator does not work - MODU 1979 4.2.7
Due 6 July 2012
Resolved 11 June 2012
Resolution: Bulb was replaced and illuminates properly.
Engineering › Diesel Engine (propulsion/auxiliary-electric) › Emergency shutdown
Issued 6 June 2012 Resolved
1430 - Auxiliary engines - Where risk of over-speeding exists ensure safe speed is not exceeded. Also machinery should be provided with auto shutdown for low lube oil. Vessel could not prove proper operation of generator #2 over-speed and low lube oil shutdowns - MODU 1979 4.2.3 & 4.2.7
Due 6 July 2012
Resolved 20 June 2012
Resolution: Inspectors from Sector Puget Sound verified the proper operation of generator #2 over-speed and low lube oil shutdowns.
Electrical › Electrical Distribution System (service) › Wiring
Issued 6 June 2012 Resolved
1099 - Other (alarm - signals) - Wiring should be supported to avoid chafing. Audible alarm at SCR WTD is hanging loose - MODU 1979 5.5.5.4
Due 6 July 2012
Resolved 11 June 2012
Resolution: Wiring and box secured above WTD.
Navigation › Emergency Steering › Communications to Emergency Steering
Issued 6 June 2012 Resolved
1581 - Rudder angle indicator - Angular position of the rudder should be recongizable in the steering gear room. Indicator on forward bulkhead of aft steering does not work - MODU 19797.5.1.12.2
Due 6 June 2012
Resolved 11 June 2012
Resolution: New rudder angle indicator installed.
Accommodation/Occupational Safety › Occupational Safety › Tripping/Falling Hazard
Issued 6 June 2012 Resolved
0960 - Means of escape - Every escape route hazard should be removed. Threshold at hatch to nav bridge loose - MODU 1979 9.3
Due 6 July 2012
Resolved 11 June 2012
Resolution: Threshold screwed down and shored up.
Fire Fighting › Fixed Deck Foam System › Piping
Issued 6 June 2012 Resolved
0725 - Helicopter deck provided with suitable foam application system. Foam system had major leak in pipe fitting below helo deck - MODU 1979
Action required: 17 - Rectify deficiencies prior to departure
Resolved 6 June 2012
Resolution: Shipyard loosened flange and gasket blew out. New gasket was made and flange bolts tightened. Ran foam system. All Sat.
Stability › Watertight Integrity › General
Issued 6 June 2012 Resolved
0999 - Other (safety in general) - External doors should be self closing. FSD at forward level main deck does not self close - MODU 1979 9.1.5
Due 6 June 2012
Resolved 11 June 2012
Resolution: Doors were adjusted and closures added.
Fire Fighting › Nozzles › Condition
Issued 6 June 2012 Resolved
0720 - Fire fighting equipment - Every fire hose should be provided with a dual purpse nozzle. Nozzle at fire station #16 is broken - MODU 1979 9.4.3.2
Due 6 July 2012
Resolved 11 June 2012
Resolution: Nozzle was replaced with new nozzle.
Fire Fighting › Ventilation Systems › Duct Hatches
Issued 6 June 2012 Resolved
0750 - Fire prevention - Means should be provided for closing all vent from outside of spaces. Vent door to accom space near lifeboat 2 would not close - MODU 1979 9.10.1
Due 6 July 2012
Resolved 11 June 2012
Resolution: Ventilation cover was freed up and was able to be closed and sealed.
Fire Fighting › Fire Hoses › Number
Issued 6 June 2012 Resolved
0720 - Fire fighting equipment - A hose should be provided for every hydrant. All hoses with appropriate couplings weren't installed at every hydrant - MODU 1979 9.4.3.1
Action required: 17 - Rectify deficiencies prior to departure
Resolved 19 June 2012
Resolution: 19JUN2012 - Inspectors from Sector Puget Sound observed new hoses installed at fire hydrants.
Engineering › Bilge Water Management System › Pump
Issued 6 June 2012 Resolved
1440 - Bilge pumping arrangements - Units should have at least two power pumps connected to the bilge main. Pump 1 & 2 did not function - MODU 1979 4.8.2
Action required: 17 - Rectify deficiencies prior to departure
Resolved 20 June 2012
Resolution: Inspectors from Sector Puget Sound verified the proper operation of pumps.
Fire Fighting › Fire Main › Material
Issued 6 June 2012 Resolved
0830 - Pipes wires (insulate)-accident prev. - All piping should be installed and protected to reduce to a minimum any danger to persons on board. Anchor wash piping leaking on electrical generator - MODU 1979 4.1.3
Due 6 July 2012
Resolved 20 June 2012
Resolution: Inspectors from Sector Puget Sound verified the proper repairs of pipe.
Lifesaving › Embarkation Appliances/Stations › Accessability
Issued 6 June 2012 Resolved
0699 - Other (Life Saving appliances) - Personnel landings and sea areas in their vicinity should be illuminated. 4of5 lights were not functioning - MODU 1979 10.11.2
Action required: 17 - Rectify deficiencies prior to departure
Resolved 20 June 2012
Resolution: Inspectors from Sector Puget Sound attended vessel and verified operation of transitional lighting.
Stability › Watertight Integrity › General
Issued 6 June 2012 Resolved
1299 - Other (Load lines) - Where penetrations of watertight decks are necessary arrangements should be made to maintain watertight integrity. Wire and pipe penetrations iwo WTD 28FR71 Door 12 - MODU 1979 3.6.1
Due 6 July 2012
Resolved 20 June 2012
Resolution: Inspectors from Sector Puget Sound attended vessel and verified proper repairs to wire and pipe penetrations.
Documentation › Manuals/Policy Documentation › Emergency Instructions
Issued 6 June 2012 Resolved
0999 - Other (safety in general) - An emergency evacuation plan (EEP) must be submitted by the lease holder to the cognizant officer in charge marine inspection (OCMI) 30 days prior to placing rig in operation. Submit EEP to [name withheld] for review - 33CFR146.210
Due 6 July 2012
Resolved 29 June 2012
Resolution: Operator was issued approved EEP by [name withheld].
Accommodation/Occupational Safety › Ventilation › General
Issued 6 June 2012 Resolved
0999 - Other (safety in general) - Enclosed space with direct access to Zone 1 fitted with gas-tight self-closing door. Doors between mud pit room and mud pump room not self closing - MODU 1979 6.3.1.3.1
Due 6 July 2012
Resolved 11 June 2012
Resolution: Door closure devices installed above doors.
Accommodation/Occupational Safety › Ventilation › General
Issued 6 June 2012 Resolved
1099 - Other (alarm - signals) - Enclosed space with direct access to Zone 1 alarmed for loss of ventilation overpressure. Doors between mud pit room and mud pump room not fitted with alarm - MODU 1979 6.3.1.3.3
Due 6 July 2012
Resolved 20 June 2012
Resolution: Inspectors from Sector Puget Sound attended vessel and witnessed operational test of alarms
Engineering › Diesel Engine (propulsion-direct drive) › Turbocharger
Issued 12 November 2007 Resolved
#1 Turbo for engine propulsion not functioning properly.
Action required: 17 - Rectify deficiencies prior to departure
Resolved 17 November 2007
Resolution: On 16NOV07 Sector Guam received satisfactory documentation of repairs made to the turbo.
Engineering › Diesel Engine (auxiliary) › Connecting Rod
Issued 8 October 2007 Resolved
Provide a classification society report attesting to the root cause of power failure and corrective action. SOLAS II-I regulation 41.
Condition: Damaged By Earlier Event
Action required: 705 - Other - as specified
Due 15 October 2007
Resolved 14 October 2007
Resolution: received class report attesting to the root cause of SSDG failures, and attesting to corrective action.
Engineering › Diesel Engine (auxiliary) › Connecting Rod
Issued 8 October 2007 Resolved
Prove proper operation of ship's service generators. SOLAS I regulation 11
Condition: Damaged By Earlier Event
Action required: 17 - Rectify deficiencies prior to departure
Due 15 October 2007
Resolved 14 October 2007
Resolution: Witnessed proper operation of SSDGs (except #2). and witnessed overspeed trips on numbers 1,3,4,5 & 6.
Electrical
Issued 16 April 1984 Resolved
IC SPEAKERS IN HAZARDOUS ZONES ARE TO BE REPLACED WITH SPEKERS SUITABLE FOR SUCH ZONE.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Fire Fighting
Issued 16 April 1984 Resolved
INSTALL NON RETURN CHECK VALVES INSUCH A WAY AS TO ISOLATE MAIN FIRE PUMP FROM AND TO PREVENT LOSS OF PRESSURE THROUGH BILGE AND AUXILIARY PUMP.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Fire Fighting
Issued 16 April 1984 Resolved
A DELUGE SYSTEM NEEDS TO BE INSTALLED ON THE HOUSE FRONT IN ACCORDANCE WITHSECTION 9.2.13 OF THE IMO MODU CODE.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Unknown
Issued 16 April 1984 Resolved
FLIGHT DECK NEEDS TO BE PAINTED IN ACCORDANCE WITH SECTION 13 OF THE IMO MODU CODE.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Construction/Loadline
Issued 16 April 1984 Resolved
REFURBISH HATCH FORWARD OF DERRICK.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Unknown
Issued 16 April 1984 Resolved
GUARDS ARE TO BE FITTED AT AIR TUGGERS ON DRILL FLOOR.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Lifesaving
Issued 16 April 1984 Resolved
EMERGENCY ESCAPE ROUTES NEED TO BE PROPERLY MARKED.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Fire Fighting
Issued 16 April 1984 Resolved
THERMAL FIRE DETECTION SYSTEM LOCATED IN QUARTERS NEEDS TO BE PLACED IN WORKING ORDER.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Documentation
Issued 16 April 1984 Resolved
COMPLY WITH EMPLOYMENT REQUIREMENTS OF TITLE 33 CODE OF FEDERAL REGULATIONSSECTIO 141.15 OR OBTAIN WAIVER FROM COMMANDANT AS PRESCRIBED IN SECTION
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Documentation
Issued 16 April 1984 Resolved
PROVIDE COPY OF IMO MODU CODE CERTIFICATE TO THIS OFFICE UPON ISSUANCE BY ABS.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Unknown
Issued 16 April 1984 Resolved
SAFETY NET NEEDS TO BE INCREASED TO 1.5 METERS WIDE WITH OUTER EDGE NOT MORE THAN 15CM ABOVE DECK AT FLIGHT DECK.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Navigation
Issued 16 April 1984 Resolved
LIGHTS AROUND PERIMETER OF FLIGHT DECK NEED TO BE ALTERNATING BLUE AND YELLOW (OR AMBER).
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984
Unknown
Issued 16 April 1984 Resolved
FLIGHT DECK SHALL BE COATED WITH NON SKIP MATERIAL.
Condition: Unknown
Due 16 April 1984
Resolved 16 April 1984

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.