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LASSEN
LASSEN is a 1975 towing vessel. The Coast Guard has recorded 33 inspections since 1993, most recently in March 2026, along with 10 deficiencies, 5 operational controls and 10 casualty investigations between 2002 and 2025.
Records from 1993 to 2026. Most recent: inspection, 5 March 2026.
- Built
- 1975
- Last inspected
- 5 March 2026
- Documentation
- Valid · documentation file of 10 September 2026
- Deficiencies
- 10 recorded · 0 without a recorded resolution
- Controls
- None recorded without a removal date
- Casualties
- 10 investigations · 2002–2025
Identity
562754
8652964 View on MarineTraffic leaves Maury; a third-party site, nothing from it is stored here
WDQ9177
132990
Flag
UNITED STATES
367513170
Maury page id
psix-132990
Inspections, by type
…with no type recorded15
Years with a record
11 calendar years (1993–2026)
The 33 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)66.0 ft × 24.0 ft × 11.1 ft
Registered tonnagegross 136 / net 92
ITC dimensions (L × B × D)Not recorded
ITC tonnageNot recorded
BuilderCOLBERG, INC. · STOCKTON, CA, UNITED STATES · built 1975
Hull materialSteel
PropulsionDiesel Reduction
Hull shapeNot recorded
Hull configurationNot recorded
Hailing portRIO VISTA, CA
Trade endorsementsCoastwise, unrestricted, Registry
DocumentationValid · issued 12 June 2026 · expires 31 July 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 it92 - Regulatory (Subpart C or D), Net Ton
136 - Dead Weight, Ton
136 - Regulatory (Subpart C or D), Gross Ton
136 - Dead Weight, Ton
136 - Regulatory (Subpart C or D), Gross 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
WDQ9177MMSI 367513170 · active · compulsorily equipped · granted 21 April 2026, expires 21 April 2036
WDG2199MMSI 367513170 · cancelled · compulsorily equipped · granted 24 December 2021, cancelled 15 April 2026
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 · 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.
DB 24 Industrial Vessel · MISLE 72394 · 23 March 2024 · activity 7898297PETER FOSS Towing Vessel · MISLE 155386 · 8 September 2023 · activity 7798788ARTHUR BRUSCO Towing Vessel · MISLE 87965 · 10 August 2023 · activity 7773466P. J. BRIX Towing Vessel · MISLE 208761 · 26 September 2010 · activity 3857460DESCHUTES Towing Vessel · MISLE 455450 · 26 September 2010 · activity 3857460GENCO PROGRESS Freight Ship · MISLE 494541 · 26 September 2010 · activity 3857460MOANA Towing Vessel · MISLE 213066 · 22 August 2010 · activity 3831776COLUMBIA Towing Vessel · MISLE 97761 · 19 October 2008 · activity 3348124YASA OZCAN Freight Ship · MISLE 987107 · 19 October 2008 · activity 3348124ST-43 Freight Barge · MISLE 187290 · 22 November 1996 · activity 179020ST-43 Freight Barge · MISLE 187290 · 1 November 1996 · activity 46613ITB 252 Freight Barge · MISLE 51178 · 21 October 1994 · activity 146546YD172 Industrial Vessel · MISLE 420746 · 21 October 1994 · activity 146546YTB835 Towing Vessel · MISLE 420747 · 21 October 1994 · activity 146546YTB828 Towing Vessel · MISLE 420748 · 21 October 1994 · activity 146546Inspection history · 33
5 March 2026
Administrative Inspection
Administrative · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 8331418
17 December 2025
Administrative Inspection
Administrative · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 8284908
17 December 2025
Type not recorded
No type recorded · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 8284965
11 September 2025
Deficiency Check · COI Inspection · Administrative Inspection
Physical examination · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 8233302
18 June 2025
Internal Structural Exam · Hull Examination · Drydock Exam
Physical examination · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 8161557
11 June 2025
Administrative Inspection · In-Service Inspection
Physical examination · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 8158293
10 June 2025
Type not recorded
No type recorded · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 8157451
11 September 2024
In-Service Inspection · Deficiency Check · Administrative Inspection
Physical examination · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 8000647
22 August 2024
Annual Inspection · Deficiency Check
Physical examination · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 7986808
27 March 2024
Deficiency Check · Administrative Inspection · In-Service Inspection
Physical examination · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 7886151
23 March 2024
Type not recorded
No type recorded · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 7898297
18 March 2024
Administrative Inspection
Administrative · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 7880953
18 March 2024
Type not recorded
No type recorded · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 7900392
18 December 2023
Administrative Inspection
Administrative · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 7840099
21 September 2023
Examination of Repairs · Damage Survey
Physical examination · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 7797773
8 September 2023
Type not recorded
No type recorded · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 7798788
10 August 2023
Deficiency Check · In-Service Inspection
Physical examination · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 7765341
10 August 2023
Type not recorded
No type recorded · Sector San Francisco · USCG Southwest District (CGD-SW) · Activity 7773466
20 July 2023
Administrative Inspection
Administrative · Sector Columbia River · USCG Northwest District (CGD-NW) · Activity 7747392
5 June 2023
Annual Inspection
Physical examination · Sector Columbia River · USCG Northwest District (CGD-NW) · Activity 7703981
14 July 2022
Deficiency Check
Physical examination · Marine Safety Unit Portland OR · USCG Northwest District (CGD-NW) · Activity 7511993
22 June 2022
COI Inspection
Physical examination · Marine Safety Unit Portland OR · USCG Northwest District (CGD-NW) · Activity 7424261
26 September 2010
Type not recorded
No type recorded · Sector Portland · USCG Northwest District (CGD-NW) · Activity 3857460
22 August 2010
Type not recorded
No type recorded · Sector Portland · USCG Northwest District (CGD-NW) · Activity 3831776
8 April 2010
Deficiency Check
Physical examination · Sector Portland · USCG Northwest District (CGD-NW) · Activity 3711488
5 January 2010
MTSA Verification · Industry Initiated Exam
Physical examination · Sector Portland · USCG Northwest District (CGD-NW) · Activity 3658314
19 October 2008
Type not recorded
No type recorded · Sector Portland · USCG Northwest District (CGD-NW) · Activity 3348124
10 June 2002
Type not recorded
No type recorded · MSO PORTLAND, OREGON · USCG Northwest District (CGD-NW) · Activity 1638443
22 November 1996
Type not recorded
No type recorded · MSO PORTLAND, OREGON · USCG Northwest District (CGD-NW) · Activity 179020
1 November 1996
Type not recorded
No type recorded · MSO PORTLAND, OREGON · USCG Northwest District (CGD-NW) · Activity 46613
21 October 1994
Type not recorded
No type recorded · MSO SAN FRANCISCO BAY · USCG Southwest District (CGD-SW) · Activity 146546
20 January 1993
Type not recorded
No type recorded · MSO SAN FRANCISCO BAY · USCG Southwest District (CGD-SW) · Activity 686639
19 January 1993
Type not recorded
No type recorded · MSO SAN FRANCISCO BAY · USCG Southwest District (CGD-SW) · Activity 55353
Deficiency record · 10
13 - Propulsion and Auxiliary Machinery › N/A - No Subsystem › Operation of machinery
Issued 11 September 2024
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 starboard rudder missing, resulting in restricted maneuverability during towing operations. Repair damaged components to the satisfaction of the attending marine inspector prior to operating in commercial service. 46 CFR 143.205(a)
03 - Water/Weathertight Conditions › N/A - No Subsystem › Manholes/flush scuttles
Issued 22 August 2024
Resolved
Closure devices must be provided for deckhouse or hull penetrations, which open to the exterior of the vessel and which may allow water to enter the vessel. These devices must be suitable for the expected route. Vessels forward deck hatch/emergency escape found not watertight and inoperable from inside the vessel. 46CFR144.320(b)
01 - Certificates & Documentation › 013 - Documents › Tables of working hours
Issued 22 August 2024
Resolved
The emergency duties and duty stations required by this section must be posted at each operating station and in a conspicuous location in a space commonly visited by crewmembers. Emergencies duties listed did not include all required emergencies. 46CFR140.405(b)
07 - Fire Safety › N/A - No Subsystem › Oil accumulation in engine room
Issued 22 August 2024
Resolved
All bilges and void spaces are kept free from accumulation of combustible and flammable materials and liquids insofar as practicable. Fuel oil was found in the engine room bilges. 46CFR142.220(a)
02 - Structural Conditions › N/A - No Subsystem › Electrical installations in general
Issued 22 August 2024
Resolved
Individual circuit breakers on switchboards and distribution panels must be labeled with a description of the loads they serve. Distribution panel on the bridge found missing labels. 46CFR143.400(d)
02 - Structural Conditions › N/A - No Subsystem › Other (Structural condition)
Issued 27 March 2024
Resolved
An existing vessel may be deemed by the OCMI, or TPO, to be in compliance with this subpart provided that either: (b) The vessel has been both in satisfactory service insofar as structural adequacy is concerned and does not cause the structure of the vessel to be questioned by either the OCMI, or TPO engaged to perform an audit or survey. Vessel was found with damage sustained to their propeller after striking floating wood debris. Vessel must conduct a full damage assessment and create a repair proposal to the satisfaction of the Marine Inspector.
46CFR144.200(b)
13 - Propulsion and Auxiliary Machinery › N/A - No Subsystem › Propulsion main engine
Issued 18 March 2024
Resolved
A vessel must be operated in accordance with applicable laws and regulations and in such a manner as to afford protection against hazards to life, property, and the environment. Vessel reported loss of propulsion due to shutdown of the starboard main engine. Provide root cause and corrective actions prior to operating in commercial service.
13 - Propulsion and Auxiliary Machinery › N/A - No Subsystem › Operation of machinery
Issued 22 September 2023
Resolved
Propulsion machinery, including main engines, reduction gears, shafting, bearings, and electrical equipment and systems, must:Be maintained to ensure proper operation. Vessel sustained damage to the port rudder, wheel, propulsion shaft, and port strut structure from a bump and go on 08SEP2023. All damaged components shall be repaired to OEM specs and vessel shall conduct a sea trial to the satisfaction of the attending Coast Guard Marine Inspector prior to movement from Bay Ship and Yacht.
Provide the following reports:
Full scope of repairs
Wheel balancing
Shaft straightening
Rudder fabrication
Final alignment
13 - Propulsion and Auxiliary Machinery › N/A - No Subsystem › Insulation wetted through (oil)
Issued 10 August 2023
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 experienced a fuel leak from the port side engine during operations from an unknown source. Vessel must repair or replace the source of the fuel leak to the satisfaction to the attending marine inspector.
46CFR143.205(a)
08 - Alarms › N/A - No Subsystem › Steering gear alarm
Issued 22 June 2022
Resolved
Each towing vessel must have reliable means to provide notification when an essential system develops problems... A low hydraulic steering fluid level condition must have an audible and visual alarm at each operating station; such an alarm is not provided for the subject vessel.
Casualty record · 10
10 June 2002Routine · role: Involved in a Marine Casualty · activity 1638443
19 October 2008Routine · role: Transiting Vicinity of Primary Subject · activity 3348124
22 August 2010Routine · role: Involved in a Marine Casualty · activity 3831776
26 September 2010Routine · role: Transiting Vicinity of Primary Subject · activity 3857460
10 August 2023Routine · role: Involved in a Marine Casualty · activity 7773466
8 September 2023Routine · role: Involved in a Marine Casualty · activity 7798788
18 March 2024Routine · role: Involved in a Marine Casualty · activity 7900392
23 March 2024Routine · role: Involved in a Marine Casualty · activity 7898297
10 June 2025Routine · role: Involved in a Marine Casualty · activity 8157451
17 December 2025Routine · role: Involved in a Marine Casualty · activity 8284965
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.