Tong Heng

At 12,105 gross tons, Tong Heng is the 33,308th 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 2.0 times the typical vessel on record here. The largest measures 499,167 GT.

Among the 360 dredgers held here, it ranks 30th by tonnage — larger than 91% 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.

People's Republic of China is the country of registry for 3,427 vessels in this directory, of which Tong Heng is the 1,590th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (1,851 ships), and the median vessel measures 10,532 GT. Browse every ship flagged People's Republic of China.

Narrowing to both dimensions at once, this registry holds 43 dredgers flying the People's Republic of China flag, of which 9 are larger by tonnage.

Tong Heng was built in 2012, making it 14 years old. It is one of 2,747 hulls in this registry delivered that year, a cohort whose median tonnage is 23,456 GT; within it this ship is the 1,636th 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.

At 131.0 m overall, Tong Heng is 51.0 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 9609316 this registry holds 65 other vessels, whose median build year is 2012 and which range from 2011 to 2016. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 2012.

Its IMO number, 9609316, carries its own check digit. The first six digits are weighted seven down to two and summed — = 146 — and the last digit of that total, 6, must equal the seventh digit, 6. It does, so this number is well formed.