A public reference property of Baalvion

Open data · every figure carries its source

World Shipping DirectoryCompanies · Ships · Fleets

A public reference property of Baalvion

Open data · every figure carries its source

World Shipping DirectoryCompanies · Ships · Fleets

Yacht

USS Williamsburg

IMO 5400803Built 1931

Operated by United States Navy

Photo: U.S. Navy · Public domain · file

No gross tonnage is recorded for this vessel, so it cannot be ranked by size. Rank is only shown where the underlying measurement exists.

In brief

About USS Williamsburg

Full article ↗

USS Williamsburg was a US Navy gunboat. A former private yacht, it also served as a presidential yacht from 1945 to 1953.

Quoted from USS Williamsburg on English Wikipedia, reused under CC BY-SA 4.0.

Vessel particulars

Identification and dimensions

Every value is as recorded in the source. Blanks are values the source does not hold — none is estimated from a sister ship or a class average.

Identification

IMO number: 5400803
IMO check digit: Valid
MMSI
Call sign

In context

How USS Williamsburg compares

Every figure in this section is a count, a rank or a percentile over vessels actually held in this registry — not over the world fleet, which is larger. Nothing here is estimated.

USS Williamsburg was built in 1931, making it 95 years old. It is one of 47 hulls in this registry delivered that year, a cohort whose median tonnage is 526 GT. Across the whole of the 1930s the registry holds 552 vessels, median 1,138 GT. The median build year across the entire registry is 1995.

The registry attributes 12 vessels to Bath Iron Works, with a median tonnage of 21,282 GT, delivered between 1931 and 1983. See the rest of that yard’s output.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 5400803 this registry holds 7 other vessels, whose median build year is 1951 and which range from 1931 to 1963. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1931.

Its IMO number, 5400803, carries its own check digit. The first six digits are weighted seven down to two and summed — 5×7 + 4×6 + 0×5 + 0×4 + 8×3 + 0×2 = 83 — and the last digit of that total, 3, must equal the seventh digit, 3. It does, so this number is well formed.