MAURY USCG vessel records Sign in
← All vessels

MASTER

Towing Vessel · Built 1990s · USCG Southwest District (CGD-SW) · Other hulls named MASTER · VESSEL MANAGEMENT SERVICES, INC. operator of record, 2023

MASTER is a 1998 towing vessel. The Coast Guard has recorded 19 inspections since 2004, most recently in August 2026, along with 1 operational control and 2 casualty investigations between 2017 and 2021.

Records from 2004 to 2026. Most recent: inspection, 11 August 2026.

Built
1998
Last inspected
11 August 2026
Documentation
Valid · documentation file of 10 September 2026
Inspections
19
Deficiencies
0 recorded · 0 without a recorded resolution
Controls
None recorded without a removal date
Casualties
2 investigations · 2017–2021
Inspected with
4 other vessels

Identity

US Official No.
1063751
IMO number
9188532 View on MarineTraffic leaves Maury; a third-party site, nothing from it is stored here
Call sign
WCY6528
MISLE id
471162
Flag
UNITED STATES
MMSI
366755010
Maury page id
psix-471162

Inspections, by type

…physical examinations8
…administrative events4
…with no type recorded7
Years with a record 15 calendar years (2004–2026)
The 19 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.

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 Towing Vessel class in Maury's sources begin in 1980.

Documentation record

Registered dimensions (L × B × D)96.7 ft × 36.0 ft × 15.0 ft
Registered tonnagegross 275 / net 187
ITC dimensions (L × B × D)96.7 ft × 36.0 ft × 15.0 ft
ITC tonnagegross 366 / net 109
BuilderNICHOLS BROS BOAT BLDRS · FREELAND, WA, UNITED STATES · built 1998
Hull materialSteel
PropulsionDiesel Reduction
Hull shapeNot recorded
Hull configurationNot recorded
Hailing portSAN FRANCISCO, CA
Trade endorsementsCoastwise, unrestricted, Registry
DocumentationValid · issued 14 January 2026 · expires 28 February 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 it366 - Convention (Subpart B), Gross Ton
275 - Regulatory (Subpart C or D), Gross Ton
109 - Convention (Subpart B), Net Ton
187 - 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 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

WCY6528MMSI 366755010 · active · compulsorily equipped · granted 3 August 2018, expires 25 August 2028
FCC Universal Licensing System ship-station file of 6 September 2026, matched to this hull on its US Official Number. Status and dates are the file’s own. The licensee is not read from the file and is not shown. A lapsed licence’s MMSI is still the number the vessel transmitted under while it was valid.

Inspected as a tow unit · 4

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.

LEADER Towing Vessel · MISLE 471173 · 5 December 2021 · activity 7364960LMZ VEGA Freight Ship · MISLE 1104534 · 5 December 2021 · activity 7364960ADMIRAL Towing Vessel · MISLE 471159 · 10 July 2011 · activity 4077173SKOPELOS Tank Ship · MISLE 625291 · 10 July 2011 · activity 4077173ADMIRAL Towing Vessel · MISLE 471159 · 2 February 2006 · activity 2583215

Inspection history · 19

11 August 2026 Deficiency Check
Physical examination · Sector San Diego · USCG Southwest District (CGD-SW) · Activity 8461836
22 July 2025 Deficiency Check · Administrative Inspection
Physical examination · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 8217596
8 March 2023 Administrative Inspection
Administrative · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 7647747
5 October 2022 Administrative Inspection
Administrative · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 7572058
4 October 2022 Type not recorded
No type recorded · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 7571327
11 June 2022 Administrative Inspection · Deficiency Check
Physical examination · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 7474158
10 June 2022 Type not recorded
No type recorded · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 7489923
5 December 2021 Type not recorded
No type recorded · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 7364960
7 February 2020 Administrative Inspection
Administrative · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 6904979
17 December 2018 Administrative Inspection · Initial Certification
Physical examination · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 6625470
12 June 2017 Type not recorded
No type recorded · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 6175086
12 March 2015 Type not recorded
No type recorded · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 5083102
10 July 2011 Type not recorded
No type recorded · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 4077173
3 November 2010 Industry Initiated Exam
Physical examination · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 3884942
19 August 2009 MTSA Verification
Physical examination · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 3571808
11 October 2007 MTSA Verification
Physical examination · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 3078764
30 May 2006 MTSA Verification
Physical examination · Sector Los Angeles/Long Beach · USCG Southwest District (CGD-SW) · Activity 2668635
2 February 2006 Type not recorded
No type recorded · USCG Southwest District (dpw) · USCG Southwest District (CGD-SW) · Activity 2583215
30 January 2004 Security Plan Review - VSP
Administrative · Marine Safety Center (MSC) · Activity 2013637

Deficiency record · 0

No deficiencies recorded against this vessel. This means none were written in the records covered — it is not a statement about the vessel's condition. What a recorded resolution is.

Casualty record · 2

12 June 2017Routine · role: Involved in a Marine Casualty · 1 injured · activity 6175086
5 December 2021Routine · role: Sighted in Area · activity 7364960
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, and the bridge, lock or dam the investigation names where it names one. Involvement is not fault. The investigation narrative is not published. Source: IIR, through 2026.

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.