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M.A.R.S. LOKI

Towing Vessel · Built 1970s · USCG Heartland District (CGD-H)

M.A.R.S. LOKI is a 1979 towing vessel. The Coast Guard has recorded 13 inspections since 1997, most recently in October 2025, along with 8 deficiencies and 2 casualty investigations between 2017 and 2018.

Records from 1997 to 2025. Most recent: inspection, 23 October 2025.

Built
1979
Last inspected
23 October 2025
Documentation
Valid · documentation file of 10 August 2026
Inspections
13
Deficiencies
8 recorded · 0 without a recorded resolution
Controls
None recorded without a removal date
Casualties
2 investigations · 2017–2018
Also recorded as
1 other name

Coast Guard record current through 23 August 2026, retrieved 5 September 2026 from PSIX. Every field on this page was recorded by the Coast Guard. Records for the Towing Vessel class in Maury's sources begin in 1980.

Inspection record

Last inspected 23 October 2025
Recorded inspections13
…physical examinations7
…administrative events1
…with no type recorded5
Deficiencies 8 recorded · 0 without a recorded resolution
Operational controls None recorded without a removal date
Years with a record 10 calendar years (1997–2025)
Every line above is a count of records the US Coast Guard wrote, or a date it recorded. A blank resolution means none was recorded in this data; it does not establish that a deficiency is outstanding. Years with a record are calendar years in which a record exists, not years in service. What Maury does not do.

Identity

US Official No.
615717
IMO number
—
Call sign
WDM8328
MISLE id
179333
Flag
UNITED STATES
Maury page id
psix-179333

Documentation record

Registered dimensions (L × B × D)97.3 ft × 29.0 ft × 11.5 ft
Registered tonnagegross 182 / net 123
ITC dimensions (L × B × D)Not recorded
ITC tonnageNot recorded
BuilderPARKER BROTHERS SHIPYARD · HOUSTON, TX, UNITED STATES · built 1979
Hull materialSteel
PropulsionDiesel Reduction
Hull shapeUNSPECIFIED
Hull configurationUNSPECIFIED
Hailing portHOUMA, LA
Trade endorsementsCoastwise, unrestricted
DocumentationValid · issued 4 June 2026 · expires 30 June 2027
Service, as the file records itTowing Vessel
Hull formpowered (Maury's inference from propulsion, hull shape, material and length, rule hf-1; not a recorded fact)
Tonnage as PSIX records it182 - Regulatory (Subpart C or D), Gross Ton
123 - Regulatory (Subpart C or D), Net Ton
Every line above is a field of the National Vessel Documentation Center's file as served by NOAA Fisheries, dated 10 August 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.
Vessel history report
Every record for this hull, in one document — $299

Every recorded inspection, 1980 to 2026 for this class, in one chronology · every deficiency, with system, dates and resolution · operational controls imposed and removed · every name this hull has been recorded under · the vessels it was inspected alongside, and when · how its record compares with hulls of similar age and size, as a fact about the population and never a judgement about this vessel.

Read one first, in full: a forty-year chronology · a hull that changed operators four times · the sparse case, shown as an example, not for sale.

This report is in development and is not for sale yet. There is no date, and nothing is charged. Leave an email and we will tell you when it exists, once.

Inspection history · 13

23 October 2025 Annual Inspection · Administrative Inspection · Deficiency Check
Physical examination · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 8257614
5 November 2024 Administrative Inspection · Annual Inspection · Deficiency Check
Physical examination · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 8029718
10 August 2023 Annual Inspection · Deficiency Check
Physical examination · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 7764608
5 August 2022 Initial Certification
Physical examination · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 7524314
19 July 2022 Administrative Inspection
Administrative · Marine Safety Unit Lake Charles · USCG Heartland District (CGD-H) · Activity 7511920
24 January 2022 Internal Structural Exam · Drydock Exam
Physical examination · Marine Safety Unit Houma · USCG Heartland District (CGD-H) · Activity 7384535
9 July 2019 Type not recorded
No type recorded · Marine Safety Unit Victoria · USCG Heartland District (CGD-H) · Activity 6761954
13 August 2018 Type not recorded
No type recorded · Marine Safety Unit Lake Charles · USCG Heartland District (CGD-H) · Activity 6510857
30 June 2018 Type not recorded
No type recorded · Marine Safety Unit Lake Charles · USCG Heartland District (CGD-H) · Activity 6481967
17 April 2017 Type not recorded
No type recorded · Marine Safety Unit Lake Charles · USCG Heartland District (CGD-H) · Activity 6198962
14 August 2013 DAPI Audit · Industry Initiated Exam
Physical examination · Marine Safety Unit Lake Charles · USCG Heartland District (CGD-H) · Activity 4684847
21 June 2010 Industry Initiated Exam · Deficiency Check
Physical examination · Marine Safety Unit Lake Charles · USCG Heartland District (CGD-H) · Activity 3773230
15 July 1997 Type not recorded
No type recorded · MSU LAKE CHARLES · USCG Heartland District (CGD-H) · Activity 405803

Deficiency record · 8

99 - Other › N/A - No Subsystem › Other (Safety in general)
Issued 5 November 2024 Resolved
MSD was leaking around the entirety of the device and components.
Condition: Damaged By Earlier Event
Action required: 16 - Rectify deficiencies w/in 14 days
Resolved 24 January 2025
Resolution: Vessel rep provided photo documentation of replaced MSD aerator securing leak.
13 - Propulsion and Auxiliary Machinery › N/A - No Subsystem › Auxiliary engine
Issued 5 November 2024 Resolved
Battery installation near generator not secured to the deck with battery acid leaking in the box.
Action required: 16 - Rectify deficiencies w/in 14 days
Resolved 24 January 2025
Resolution: Vessel rep provided photo documentation of battery box screwed to deck plate.
07 - Fire Safety › N/A - No Subsystem › Other (fire safety)
Issued 5 November 2024 Resolved
Flame screens on stern of vessel against the bulkhead to engine room were not a mesh corrosion resistant-flame screen.
Action required: 16 - Rectify deficiencies w/in 14 days
Resolved 24 January 2025
Resolution: Vessel rep provided photo documentation showing new corrosion-resistant mesh screen.
07 - Fire Safety › N/A - No Subsystem › Other (fire safety)
Issued 5 November 2024 Resolved
Fire extinguisher bracket in galley is broken.
Action required: 16 - Rectify deficiencies w/in 14 days
Resolved 24 January 2025
Resolution: Vessel rep provided photo documentation of replaced bracket securing fire extinguisher.
03 - Water/Weathertight Conditions › N/A - No Subsystem › Doors
Issued 5 November 2024 Resolved
Port side watertight door to engine room is structurally compromised/warped with daylight showing.
Action required: 17 - Rectify deficiencies prior to departure
Resolved 24 January 2025
Resolution: Vessel rep provided photo documentation showing watertight door providing tight seal and no light penetration.
13 - Propulsion and Auxiliary Machinery › N/A - No Subsystem › Gauges, thermometers, etc
Issued 5 August 2022 Resolved
Each towing vessel must have means to monitor amount of thrust at each operating station. Port main engine tachometer in wheelhouse was not functional.
Action required: 17 - Rectify deficiencies prior to departure
Resolved 8 August 2022
Resolution: Port main engine tachometer was repaired.
05 - Radio Communications › N/A - No Subsystem › VHF radio installation
Issued 5 August 2022 Resolved
The VHF-FM radio must be installed at each operating station and connected to a functioning battery backup. Vessel did not have a functioning battery backup.
Action required: 17 - Rectify deficiencies prior to departure
Resolved 8 August 2022
Resolution: Backup VHF-FM radio was functioning properly.
01 - Certificates & Documentation › 011 - Ships Certificates › Other (certificates)
Issued 19 July 2022 Resolved
All owners and operators of an existing towing vessel must have onboard a valid COI prior to the specified phase-in period. This vessel has not obtained a valid COI. The vessel shall be made available for a Coast Guard COI inspection immediately and the vessl may no longer be permitted to operate.
Condition: Invalid
Action required: 60 - Rectify deficiencies prior to movement
Due 19 July 2022
Resolved 8 August 2022
Resolution: Vessel is in compliance with phase-in period, and has obtained a valid COI.

Casualty record · 2

17 April 2017Routine · role: Involved in a Marine Casualty · serious marine incident, as classified · 1 injured · activity 6198962
30 June 2018Routine · role: Involved in a Marine Casualty · activity 6481967
Each line is an incident investigation the Coast Guard recorded with this hull among the vessels involved, with the date and the classification the Coast Guard gave it. Involvement is not fault. The investigation narrative is not published. Source: IIR, through 2026.

Recorded names · 1

ALLAN (2017–2018). Names as the Coast Guard recorded them in incident records, with the years they appear; some are renames and some are spelling variants.

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.