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DEFENDER
DEFENDER is a 1976 towing vessel. The Coast Guard has recorded 55 inspections since 1994, most recently in July 2026, along with 5 deficiencies, 2 operational controls and 12 casualty investigations between 2006 and 2026.
Records from 1994 to 2026. Most recent: inspection, 9 July 2026.
- Built
- 1976
- Last inspected
- 9 July 2026
- Documentation
- Valid · documentation file of 10 August 2026
- Deficiencies
- 5 recorded · 0 without a recorded resolution
- Controls
- None recorded without a removal date
- Casualties
- 12 investigations · 2006–2026
Identity
576314
7507394
WBN3016
144331
Flag
UNITED STATES
Maury page id
psix-144331
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.
Inspections, by type
…with no type recorded20
Years with a record
24 calendar years (1994–2026)
Every line above is a count of records the US Coast Guard wrote, or a date it recorded.
The counts in the strip above are the same counts; this table splits the inspections by
the kind of activity 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.
Documentation record
Registered dimensions (L × B × D)128.6 ft × 36.5 ft × 19.2 ft
Registered tonnagegross 199 / net 135
ITC dimensions (L × B × D)128.6 ft × 36.5 ft × 19.2 ft
ITC tonnagegross 538 / net 161
BuilderMCDERMOTT SHIPYARD · AMELIA, LA, UNITED STATES · built 1976
Hull materialSteel
PropulsionDiesel Reduction
Hull shapeUNSPECIFIED
Hull configurationUNSPECIFIED
Hailing portSAN FRANCISCO, CA
Trade endorsementsCoastwise, unrestricted, Registry
DocumentationValid · issued 13 November 2025 · expires 31 December 2026
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 it538 - Convention (Subpart B), Gross Ton
199 - Regulatory (Subpart C or D), Gross Ton
161 - Convention (Subpart B), Net Ton
135 - Regulatory (Subpart C or D), Net Ton
199 - Regulatory (Subpart C or D), Gross Ton
161 - Convention (Subpart B), Net Ton
135 - 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
What it gives that this page does not: the whole record in one dated, citable document — every line with its Coast Guard activity id, the retrieval date on the cover, built to print to PDF with its page breaks — that a surveyor can attach and a lender can file. The same facts as this page, complete and in one file.
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.
A request, not a checkout: leave an email and Maury replies once, with the dated document for this hull and a Stripe invoice for $299. Nothing is charged before the document is in your hands.
Used only to answer this request. Not shared, not sold, and not added to a mailing list.
Inspected as a tow unit · 2
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.
EL CONQUISTADOR Freight Barge · MISLE 49858 · 20 March 2026 · activity 8340874MIAMI Freight Barge · MISLE 48801 · 17 November 1994 · activity 45773Inspection history · 55
9 July 2026
Administrative Inspection
Administrative · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 8433819
20 March 2026
Deficiency Check · Damage Survey · Administrative Inspection
Physical examination · Marine Safety Unit Port Canaveral · USCG Southeast District (CGD-SE) · Activity 8331106
20 March 2026
Type not recorded
No type recorded · Marine Safety Unit Port Canaveral · USCG Southeast District (CGD-SE) · Activity 8340874
23 October 2025
Administrative Inspection
Administrative · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 8258014
23 October 2025
Deficiency Check · Administrative Inspection
Physical examination · Sector Delaware Bay · USCG East District (CGD-E) · Activity 8260392
6 August 2025
Bulk Liquid Transfer Monitor
Physical examination · Sector Delaware Bay · USCG East District (CGD-E) · Activity 8203556
16 July 2025
Administrative Inspection
Administrative · Sector Delaware Bay · USCG East District (CGD-E) · Activity 8187135
4 February 2025
Damage Survey
Physical examination · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 8074240
30 January 2025
Administrative Inspection
Administrative · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 8078173
8 January 2025
In-Service Inspection
Physical examination · Sector North Carolina · USCG East District (CGD-E) · Activity 8060279
24 August 2024
Administrative Inspection
Administrative · Marine Safety Detachment Fort Macon · USCG East District (CGD-E) · Activity 7988068
24 August 2024
Type not recorded
No type recorded · Marine Safety Detachment Fort Macon · USCG East District (CGD-E) · Activity 7996033
9 May 2023
COI Inspection
Physical examination · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 7684731
14 April 2022
Administrative Inspection
Administrative · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 7430757
28 May 2021
Administrative Inspection
Administrative · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 7208940
7 March 2021
Damage Survey · Deficiency Check
Physical examination · Sector North Carolina · USCG East District (CGD-E) · Activity 7152376
7 March 2021
Type not recorded
No type recorded · Sector North Carolina · USCG East District (CGD-E) · Activity 7197992
10 November 2020
Deficiency Check · Administrative Inspection
Physical examination · Sector Delaware Bay · USCG East District (CGD-E) · Activity 7093078
6 October 2020
Bulk Liquid Transfer Monitor
Physical examination · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 7119226
2 July 2020
Administrative Inspection
Administrative · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 6993395
19 August 2019
Excursion Permit
Administrative · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 6788193
8 July 2019
MARPOL Annex I Examination · DAPI Audit · Initial Certification
Physical examination · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 6741787
8 May 2019
MTSA/ISPS Verification
Physical examination · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 6678654
11 July 2018
Type not recorded
No type recorded · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 6476730
26 June 2017
Type not recorded
No type recorded · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 6205361
6 April 2017
Type not recorded
No type recorded · Sector Houston/Galveston · USCG Heartland District (CGD-H) · Activity 6127241
17 May 2016
MTSA/ISPS Verification
Physical examination · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 5879285
16 June 2014
MTSA/ISPS Verification
Physical examination · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 4890362
2 August 2013
Type not recorded
No type recorded · Sector Delaware Bay · USCG East District (CGD-E) · Activity 4672942
2 August 2013
Type not recorded
No type recorded · Sector Delaware Bay · USCG East District (CGD-E) · Activity 4739246
13 May 2013
Type not recorded
No type recorded · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 4596293
24 January 2013
Type not recorded
No type recorded · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 4521208
22 January 2013
Damage Survey
Physical examination · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 4520223
19 January 2013
Type not recorded
No type recorded · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 4524525
15 July 2012
Type not recorded
No type recorded · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 4383587
17 December 2011
Type not recorded
No type recorded · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 4213224
2 August 2011
Industry Initiated Exam
Physical examination · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 4118643
13 May 2011
MTSA/ISPS Verification
Physical examination · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 4010253
14 January 2009
Deficiency Check
Physical examination · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 3394122
30 December 2008
Damage Survey
Physical examination · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 3387903
24 December 2008
Type not recorded
No type recorded · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 3404036
12 December 2008
MTSA/ISPS Verification
Physical examination · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 3366458
1 June 2006
MTSA/ISPS Verification
Physical examination · Sector Jacksonville · USCG Southeast District (CGD-SE) · Activity 2666983
27 March 2006
Type not recorded
No type recorded · Sector San Juan · USCG Southeast District (CGD-SE) · Activity 2615165
6 July 2005
Administrative Inspection
Administrative · Marine Safety Center (MSC) · Activity 2417387
21 June 2005
Security Plan Amendment Review - VSP
Administrative · Marine Safety Center (MSC) · Activity 2397500
16 March 2005
MTSA/ISPS Verification · Annual Inspection
Physical examination · MSO JACKSONVILLE · USCG Southeast District (CGD-SE) · Activity 2311372
1 July 2004
Administrative Inspection
Administrative · MSO JACKSONVILLE · USCG Southeast District (CGD-SE) · Activity 2123334
6 February 2004
Security Plan Review - VSP
Administrative · Marine Safety Center (MSC) · Activity 2003622
30 December 2003
Security Plan Review - ASP
Administrative · Marine Safety Center (MSC) · Activity 1978292
29 August 2002
Type not recorded
No type recorded · GROUP PHILADELPHIA · USCG East District (CGD-E) · Activity 1668305
31 December 1996
Type not recorded
No type recorded · MSO MIAMI · USCG Southeast District (CGD-SE) · Activity 116989
3 October 1996
Type not recorded
No type recorded · MSO JACKSONVILLE · USCG Southeast District (CGD-SE) · Activity 757480
27 September 1996
Type not recorded
No type recorded · MSO JACKSONVILLE · USCG Southeast District (CGD-SE) · Activity 195221
17 November 1994
Type not recorded
No type recorded · MSO HAMPTON ROADS · USCG East District (CGD-E) · Activity 45773
Deficiency record · 5
02 - Structural Conditions › N/A - No Subsystem › Steering gear
Issued 23 October 2025
Resolved
Machinery and electrical systems must be designed and maintained to provide for safe operation of the towing vessel and safety of persons onboard under normal and emergency conditions. The crew of each towing vessel must demonstrate the ability to operate the primary and auxiliary machinery and electrical systems for which they are responsible, and to do so under normal and emergency conditions. This includes, but is not limited to, responses to alarms and restoration of propulsion and steering in the event of failure. Vessel reported loss of steering during transit. Provide report of root cause for steering loss, how was restored, and how steering will be permanently fixed, in accordance with TSMS program requirement.
46 CFR 143.205 (a)&(b)
01 - Certificates & Documentation › 013 - Documents › Log-books/compulsory entries
Issued 23 October 2025
Resolved
Prior to getting underway, the master or officer in charge of a navigational watch of the vessel must examine and test the steering gear. The results of the examination and testing must be recorded in the TVR, official logbook, or in accordance with the TSMS applicable to the vessel. Provide evidence of previous recorded testings of the steering gear.
46 CFR 140.615 (b)&(c)
13 - Propulsion and Auxiliary Machinery › N/A - No Subsystem › Propulsion main engine
Issued 16 July 2025
Resolved
Machinery and electrical systems must be designed and maintained to provide for safe operation of the towing vessel and safety of persons on board under normal and emergency conditions. Vessel reported a lube oil leak on the starboard MDE. Vessel is restricted from commercial operations until cleared with TPO and receipt from bilge cleaning company is received by our office.
13 - Propulsion and Auxiliary Machinery › N/A - No Subsystem › Other (machinery)
Issued 7 March 2021
Resolved
MACHINERY AND ELECTRICAL SYSTEMS MUST BE DESIGNED AND MAINTAINED TO PROVIDE FOR SAFE OPERATION OF THE TOWING VESSEL; VESSEL'S MASTER REPORTED LOSS OF RUDDER CONTROL USING STBD PUMP.
Engineering › Steering Gear System › Motor
Issued 30 December 2008
Resolved
port steering pump failure while entering port of san juan. Vessel to check and repair prior to departure.
Casualty record · 12
27 March 2006Routine · role: Involved in a Marine Casualty · activity 2615165
24 December 2008Routine · role: Involved in a Marine Casualty · activity 3404036
17 December 2011Routine · role: Involved in a Marine Casualty · activity 4213224
15 July 2012Routine · role: Involved in a Marine Casualty · serious marine incident, as classified · 1 injured · activity 4383587
19 January 2013Routine · role: Involved in a Marine Casualty · serious marine incident, as classified · 3 injured · activity 4524525
13 May 2013Routine · role: Involved in a Marine Casualty · activity 4596293
2 August 2013Routine · role: Involved in a Marine Casualty · activity 4739246
26 June 2017Routine · role: Involved in a Marine Casualty · activity 6205361
11 July 2018Routine · role: Involved in a Marine Casualty · activity 6476730
7 March 2021Routine · role: Involved in a Marine Casualty · activity 7197992
24 August 2024Routine · role: Involved in a Marine Casualty · activity 7996033
20 March 2026Routine · role: Involved in a Marine Casualty · activity 8340874
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.
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.