At 21,484 gross tons, Sea Diamond is the 25,675th 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 3.6 times the typical vessel on record here. The largest measures 499,167 GT.
Among the 665 cruise ships held here, it ranks 325th by tonnage — larger than 36% of that group. Their median tonnage is 43,009 GT, and the largest tenth begin at 143,289 GT. The flag most often flown by this group is The Bahamas (133 ships). The yard that appears most often against it is Fincantieri, with 112 hulls on record.
Malta is the country of registry for 2,640 vessels in this directory, of which Sea Diamond is the 1,327th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (1,614 ships), and the median vessel measures 23,204 GT. Browse every ship flagged Malta.
Narrowing to both dimensions at once, this registry holds 57 cruise ships flying the Malta flag, of which 38 are larger by tonnage.
Sea Diamond was built in 1986, making it 40 years old. It is one of 866 hulls in this registry delivered that year, a cohort whose median tonnage is 4,769 GT; within it this ship is the 216th 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.
The registry attributes 37 vessels to Valmet, with a median tonnage of 18,574 GT, delivered between 1952 and 1986. See the rest of that yard’s output.
At 142.9 m overall, Sea Diamond is 55.2 m shorter than the 198.1 m median for cruise ships on record, with a beam of 25.1 m and a draft of 6.2 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 8406731 this registry holds 51 other vessels, whose median build year is 1985 and which range from 1983 to 1987. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1986.
Its IMO number, 8406731, carries its own check digit. The first six digits are weighted seven down to two and summed — 8×7 + 4×6 + 0×5 + 6×4 + 7×3 + 3×2 = 131 — and the last digit of that total, 1, must equal the seventh digit, 1. It does, so this number is well formed.
