Helios

At 8,981 gross tons, Helios is the 37,437th largest of the 84,014 vessels in this registry that report a tonnage. The median across that set is 5,994 GT, so this hull is about 1.5 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 360 dredgers held here, it ranks 52nd by tonnage — larger than 85% of that group. Their median tonnage is 2,086 GT, and the largest tenth begin at 11,701 GT. The flag most often flown by this group is People's Republic of China (43 ships). The yard that appears most often against it is Royal IHC, with 21 hulls on record.

Cyprus is the country of registry for 1,418 vessels in this directory, of which Helios is the 922nd largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (915 ships), and the median vessel measures 15,666 GT. Browse every ship flagged Cyprus.

Narrowing to both dimensions at once, this registry holds 10 dredgers flying the Cyprus flag, of which 1 is larger by tonnage.

Helios was built in 2017, making it 9 years old. It is one of 1,468 hulls in this registry delivered that year, a cohort whose median tonnage is 26,213 GT; within it this ship is the 960th largest. Across the whole of the 2010s the registry holds 20,111 vessels, median 23,456 GT. The median build year across the entire registry is 1995.

The registry attributes 85 vessels to Royal IHC, with a median tonnage of 9,125 GT, delivered between 1947 and 2024. See the rest of that yard’s output.

At 152.0 m overall, Helios is 72.0 m longer than the 80.0 m median for dredgers on record.

IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9739197 this registry holds 66 other vessels, whose median build year is 2015 and which range from 2014 to 2020. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2017.

Its IMO number, 9739197, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 7×6 + 3×5 + 9×4 + 1×3 + 9×2 = 177 — and the last digit of that total, 7, must equal the seventh digit, 7. It does, so this number is well formed.