← All vessels
LOCK MASTER
- Built
- 1967
- Last inspected
- 8 January 2026
- Documentation
- Valid · NVDC file of 10 August 2026
- Deficiencies
- 14 recorded · 0 without a recorded resolution
- Controls
- None recorded without a removal date
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
8 January 2026
…with no type recorded22
Deficiencies
14 recorded · 0
without a recorded resolution
Operational controls
None recorded without a removal date
Years with a record
19 calendar years (1991–2026)
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
509353
WDF4136
93363
Flag
UNITED STATES
Maury page id
psix-93363
Documentation record
Registered dimensions (L × B × D)57.0 ft × 22.1 ft × 7.6 ft
Registered tonnagegross 94 / net 64
ITC dimensions (L × B × D)Not recorded
ITC tonnageNot recorded
BuilderMAIN IRON WORKS INC · HOUMA, LA, UNITED STATES · built 1967
Hull materialSteel
PropulsionDiesel Reduction
Hull shapeUNSPECIFIED
Hull configurationUNSPECIFIED
Hailing portNEW ORLEANS, LA
Endorsements, as the file codes themcw_un
DocumentationValid · issued 31 December 2025 · expires 31 January 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 it94 - Regulatory (Subpart C or D), Gross Ton
64 - Regulatory (Subpart C or D), Net Ton
64 - 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.
Professional
The full record for this vessel
Behind this panel: 29 inspections, each with its date, unit and type; 14 deficiencies with the resolution recorded against each; operational controls, none recorded without a removal date; 14 other vessels inspected with it; 1 other recorded name; the documentation record: dimensions, tonnage, builder, hailing port and endorsements. Every line is a record the Coast Guard wrote; the counts above are the same counts as in the summary, and they are free.
Professional is $39 a month or $299 a year, or $19.99 a month locked for life at the founding rate, for the first 200 subscribers. It unlocks every detail section on every vessel page, fleet watch tied to your account, and ownership records on request. Already a subscriber? Sign in.
Maury does not score, rate or grade vessels, at any price.
Vessel history report
Every record for this hull, in one document — $299
Every recorded inspection, 1972 to 2026, 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.
Used only to tell you when the report exists. Not shared, not sold, and not added to a mailing list.
Inspected as a tow unit · 14
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.
EMS 384 Tank Barge · MISLE 1168473 · 9 June 2020 · activity 6972193EMS 392 Tank Barge · MISLE 1312231 · 9 June 2020 · activity 6972193LEE W Towing Vessel · MISLE 1585023 · 9 June 2020 · activity 6972193JESUS SAVES Towing Vessel · MISLE 110866 · 17 March 2006 · activity 2604226ART 460 Freight Barge · MISLE 166160 · 17 March 2006 · activity 2604226ISLA ROSE Towing Vessel · MISLE 200362 · 17 March 2006 · activity 2604226MARMAC 15 Freight Barge · MISLE 420585 · 17 March 2006 · activity 2604226ISLA ROSE Towing Vessel · MISLE 200362 · 8 August 2004 · activity 2160827CCL7 Tank Barge · MISLE 47683 · 30 October 2002 · activity 1720960MISS JULIE Towing Vessel · MISLE 146370 · 30 October 2002 · activity 1720960EMS 343 Tank Barge · MISLE 37759 · 25 February 2002 · activity 1489105CAPT. L.A. MONROE Towing Vessel · MISLE 79985 · 9 March 2001 · activity 18124SMI 200 Tank Barge · MISLE 41523 · 4 March 1998 · activity 38282CTCO 199 Tank Barge · MISLE 51443 · 4 March 1998 · activity 38282MOC II Tank Barge · MISLE 44623 · 16 April 1992 · activity 150030Inspection history · 29
8 January 2026
Administrative Inspection
Administrative · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 8292233
21 May 2022
Damage Survey · Administrative Inspection
Physical examination · Marine Safety Unit Baton Rouge · USCG Heartland District (CGD-H) · Activity 7457176
21 May 2022
Type not recorded
No type recorded · Marine Safety Unit Baton Rouge · USCG Heartland District (CGD-H) · Activity 7477511
9 April 2021
Administrative Inspection · COI Inspection
Physical examination · Marine Safety Unit Texas City · USCG Heartland District (CGD-H) · Activity 7171747
9 June 2020
Type not recorded
No type recorded · Marine Safety Unit Texas City · USCG Heartland District (CGD-H) · Activity 6972193
29 November 2016
Administrative Inspection
Administrative · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 6049502
22 July 2016
MTSA Verification · Industry Initiated Exam
Physical examination · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 5945809
11 August 2014
Type not recorded
No type recorded · Station New Orleans · USCG Heartland District (CGD-H) · Activity 4952541
29 March 2014
Type not recorded
No type recorded · Station New Orleans · USCG Heartland District (CGD-H) · Activity 4825604
5 October 2010
Industry Initiated Exam · MTSA Verification
Physical examination · Sector New Orleans · USCG Heartland District (CGD-H) · Activity 3863998
25 November 2008
Administrative Inspection
Administrative · Marine Safety Unit Galveston · USCG Heartland District (CGD-H) · Activity 3369305
17 March 2006
Type not recorded
No type recorded · Marine Safety Unit Morgan City · USCG Heartland District (CGD-H) · Activity 2604226
29 July 2005
Type not recorded
No type recorded · MSO MORGAN CITY · USCG Heartland District (CGD-H) · Activity 2444262
8 August 2004
Type not recorded
No type recorded · MSO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 2160827
19 December 2003
Type not recorded
No type recorded · Station New Orleans · USCG Heartland District (CGD-H) · Activity 1972429
10 March 2003
Type not recorded
No type recorded · Station New Orleans · USCG Heartland District (CGD-H) · Activity 1758056
30 October 2002
Type not recorded
No type recorded · MSU GALVESTON · USCG Heartland District (CGD-H) · Activity 1720960
3 April 2002
Type not recorded
No type recorded · MSO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1600532
28 March 2002
Type not recorded
No type recorded · MSO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 1600522
26 February 2002
Type not recorded
No type recorded · Marine Safety Unit Baton Rouge · USCG Heartland District (CGD-H) · Activity 1490042
25 February 2002
Type not recorded
No type recorded · Marine Safety Unit Baton Rouge · USCG Heartland District (CGD-H) · Activity 1489105
11 April 2001
Type not recorded
No type recorded · Station New Orleans · USCG Heartland District (CGD-H) · Activity 1522407
9 March 2001
Type not recorded
No type recorded · MSO MORGAN CITY · USCG Heartland District (CGD-H) · Activity 18124
12 December 2000
Type not recorded
No type recorded · MSO MORGAN CITY · USCG Heartland District (CGD-H) · Activity 285193
4 March 1998
Type not recorded
No type recorded · MSO MORGAN CITY · USCG Heartland District (CGD-H) · Activity 38282
10 December 1996
Type not recorded
No type recorded · MSO NEW ORLEANS · USCG Heartland District (CGD-H) · Activity 399472
26 May 1992
Type not recorded
No type recorded · MSU GALVESTON · USCG Heartland District (CGD-H) · Activity 181715
16 April 1992
Type not recorded
No type recorded · MSO MORGAN CITY · USCG Heartland District (CGD-H) · Activity 150030
4 December 1991
Type not recorded
No type recorded · MSO MORGAN CITY · USCG Heartland District (CGD-H) · Activity 347533
Deficiency record · 14
09 - Working and Living Conditions › 092 - Working Conditions › Electrical
Issued 15 April 2021
Resolved
Electrical systems and equipment must function properly and minimize system failures and fire and shock hazards.
There are two (02) openings in the forward engine room circuit breaker panels that are missing blanking covers. Ensure proper covers or blanks are installed to minimize fire/electrical shock hazards.
09 - Working and Living Conditions › 092 - Working Conditions › Electrical
Issued 15 April 2021
Resolved
Machinery and electrical systems must be designed and maintained for safe operation of the towing vessel and safety of persons onboard under normal and emergency conditions.
The generator Hertz Gauge is not accurately indicating generator output. The gauge will bounce from 55Hz to 65Hz intermittently, and sometimes park at the minimum or the max swing of the gauge
07 - Fire Safety › N/A - No Subsystem › Remote Means of control (opening,pumps,ventilation,etc.) Machinery spaces
Issued 15 April 2021
Resolved
Means must be provided for stopping each fan in a ventilation system serving machinery spaces and for closing, in case of fire, each doorway, ventilator, and annular space around funnels and other openings into such spaces.
Both port and starboard ventilation fans for the engine room do not have a means of fully closing off the openings in case of fire.
07 - Fire Safety › N/A - No Subsystem › Ventilation
Issued 15 April 2021
Resolved
The owner of managing owner of a towing vessel that has selected the TSMS option must examine or must have examined the following systems, equipment, and procedures to ensure that the vessel and its equipment are suitable for the service for which the vessel is certificated:
(l) Unsafe practices.
(1) Verify that all observed unsafe practices, fire hazards, and other hazardous situations are corrected, and that all required guards and protective devices are in satisfactory condition.
02 - Structural Conditions › N/A - No Subsystem › Steering gear
Issued 15 April 2021
Resolved
Machinery and electrical systems must be designed and maintained for safe operation of the towing vessel and safety of persons onboard under normal and emergency conditions.
The port side hydraulic line for the steering ram is chaffing/corroding near the forward fitting.
07 - Fire Safety › N/A - No Subsystem › Fire fighting equipment and appliances
Issued 15 April 2021
Resolved
A 40-B portable fire extinguisher must be located near the storage room or cabinet. This is in addition to the portable fire extinguishers required by tables 142.230(a) and 142.230(b) of this part.
There is no 40-B fire extinguisher in the vicinity of the flame locker.
11 - Life Saving Appliances › N/A - No Subsystem › Distress flares
Issued 15 April 2021
Resolved
A towing vessel must carry a combination of day and night visual distress signals indicated in Table 141.370 for specified areas where the vessel operates.
The vessel did not have any visual distress signals onboard.
11 - Life Saving Appliances › N/A - No Subsystem › Lifejackets incl. provision and disposition
Issued 15 April 2021
Resolved
Each towing vessel must carry at least one appropriately-sized lifejacket for each person onboard.
The vessel did not have the minimum number of life jackets onboard.
Navigation
Issued 12 December 2000
Resolved
SHIPS FOG BELL MISSING
Fire Fighting
Issued 12 December 2000
Resolved
PORTABLE FIRE EXTINGUISHERS MISSING.
Construction/Loadline › Markings › Vessel Name/Home Port
Issued 12 December 2000
Resolved
OFFICAL NUMBER IN MACHINERY SPACE IMPROPER.
Construction/Loadline › Markings › Vessel Name/Home Port
Issued 12 December 2000
Resolved
NAME AND HAILING PORT MISSING
Navigation
Issued 12 December 2000
Resolved
MISSING LIGHT LIST AND TIDE TABLE
Navigation
Issued 12 December 2000
Resolved
MISSING MAGNETIC COMPASS
Recorded names · 1
E H DEMOUY (2002–2006). 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.