William A. Irvin

United States is the country of registry for 2,278 vessels in this directory. The most common class under that flag is vessels this registry holds no type classification for (977 ships), and the median vessel measures 1,706 GT. Browse every ship flagged United States.

Narrowing to both dimensions at once, this registry holds 121 general cargos flying the United States flag.

William A. Irvin was built in 1938, making it 88 years old. It is one of 79 hulls in this registry delivered that year, a cohort whose median tonnage is 1,097 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 24 vessels to American Ship Building Company, with a median tonnage of 18,639 GT, delivered between 1904 and 2001. See the rest of that yard’s output.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 5390137 this registry holds 16 other vessels, whose median build year is 1942 and which range from 1910 to 1963. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1938.

Its IMO number, 5390137, carries its own check digit. The first six digits are weighted seven down to two and summed — 5×7 + 3×6 + 9×5 + 0×4 + 1×3 + 3×2 = 107 — and the last digit of that total, 7, must equal the seventh digit, 7. It does, so this number is well formed.