Lake Explorer II

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 90 research / surveys flying the United States flag.

Lake Explorer II was built in 1967, making it 59 years old. It is one of 496 hulls in this registry delivered that year, a cohort whose median tonnage is 757 GT. Across the whole of the 1960s the registry holds 4,074 vessels, median 844 GT. The median build year across the entire registry is 1995.

The registry attributes 13 vessels to Jakobson Shipyard, with a median tonnage of 281 GT, delivered between 1958 and 1983. See the rest of that yard’s output.

At 27.4 m overall, Lake Explorer II is 43.6 m shorter than the 71.0 m median for research / surveys on record, with a beam of 22.0 m and a draft of 7.2 m.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 6728185 this registry holds 15 other vessels, whose median build year is 1967 and which range from 1966 to 1968. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1967.

Its IMO number, 6728185, carries its own check digit. The first six digits are weighted seven down to two and summed — 6×7 + 7×6 + 2×5 + 8×4 + 1×3 + 8×2 = 145 — and the last digit of that total, 5, must equal the seventh digit, 5. It does, so this number is well formed.