H171 Cornelis Vrolijk Fzn

At 5,579 gross tons, H171 Cornelis Vrolijk Fzn is the 42,940th largest of the 84,014 vessels in this registry that report a tonnage. The median across that set is 5,994 GT. The largest measures 499,167 GT.

Among the 2,411 fishing vessels held here, it ranks 53rd by tonnage — larger than 98% of that group. Their median tonnage is 738 GT, and the largest tenth begin at 2,773 GT. The flag most often flown by this group is Russia (797 ships). The yard that appears most often against it is Kuznia na Rybalskomu, with 175 hulls on record.

H171 Cornelis Vrolijk Fzn was built in 1988, making it 38 years old. It is one of 920 hulls in this registry delivered that year, a cohort whose median tonnage is 1,512 GT; within it this ship is the 231st largest. Across the whole of the 1980s the registry holds 13,213 vessels, median 3,004 GT. The median build year across the entire registry is 1995.

At 114.0 m overall, H171 Cornelis Vrolijk Fzn is 60.0 m longer than the 54.0 m median for fishing vessels on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8707537 this registry holds 34 other vessels, whose median build year is 1987 and which range from 1987 to 1991. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1988.

Its IMO number, 8707537, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 + 7×6 + 0×5 + 7×4 + 5×3 + 3×2 = 147 — and the last digit of that total, 7, must equal the seventh digit, 7. It does, so this number is well formed.