The 10 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.
This record may be incomplete: the most recent inspection recorded for this vessel was 3 years ago. Maury shows what the Coast Guard recorded, not whether the vessel has been inspected since, is still in service, or what condition it is in. 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 Passenger Ship class in Maury's sources begin in 1977.
Share this recordDownload vessel cardDownload QRMaury, US Coast Guard vessel record for FOUR SONS (ON 585032), retrieved 18 September 2026. mauryrecords.com/v/psix-151858.html
Documentation record
Registered dimensions (L × B × D)31.9 ft × 11.5 ft × 5.3 ft
Registered tonnagegross 11 / net 9
ITC dimensions (L × B × D)Not recorded
ITC tonnageNot recorded
Builderbuilder not recorded · NEWINGTON N H · built 1977
Hull materialFRP (Fiberglass)
PropulsionDiesel
Hull shapeNot recorded
Hull configurationNot recorded
Hailing portBOSTON, MA
Trade endorsementsFishery
DocumentationValid · issued 20 March 2026 · expires 31 March 2027
Service, as the file records itPassenger (Inspected)
Hull formpowered (Maury's inference from propulsion, hull shape, material and length, rule hf-1; not a recorded fact)
Tonnage as PSIX records it9 - Regulatory (Subpart C or D), Net Ton 11 - 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
WDG5579MMSI 367548070 · expired · voluntarily equipped · granted 4 October 2012, cancelled 10 December 2022
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.
A report is not offered for this hull: Its record holds only 1 of the seven kinds of material a report is built from: inspections, deficiencies, operational controls, tow-unit appearances, casualty records, dimensions and documentation. That is a statement about the record, not about the vessel. Reports.
Inspection history · 10
13 March 2023Administrative Inspection
Administrative · USCG Northeast District (dp) · USCG Northeast District (CGD-NE) · Activity 7649980
1 June 2020Type not recorded
No type recorded · USCGC STEELHEAD (WPB 87324) · USCG East District (CGD-E) · Activity 6976733
24 October 2019Type not recorded
No type recorded · USCGC ESCANABA (WMEC 907) · Activity 6848102
3 May 2014Type not recorded
No type recorded · USCGC GRAND ISLE (WPB 1338) · USCG Northeast District (CGD-NE) · Activity 4850120
19 July 2012Type not recorded
No type recorded · USCGC RIDLEY (WPB 87328) · USCG Southeast District (CGD-SE) · Activity 4387757
28 May 2008Type not recorded
No type recorded · Station Point Allerton · USCG Northeast District (CGD-NE) · Activity 3220794
20 July 2006Type not recorded
No type recorded · Station Provincetown · USCG Northeast District (CGD-NE) · Activity 2719566
21 January 2005Type not recorded
No type recorded · USCG Northeast District (dp) · USCG Northeast District (CGD-NE) · Activity 2278384
29 December 2004Type not recorded
No type recorded · USCGC SANIBEL (WPB 1312) · USCG Northeast District (CGD-NE) · Activity 2273107
19 September 2000Type not recorded
No type recorded · Station Chatham · USCG Northeast District (CGD-NE) · Activity 1513649
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.
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.