At 2,028 gross tons, L'Astrolabe is the 57,599th 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 3.0 times smaller than the typical vessel on record here. The largest measures 499,167 GT.
Among the 612 research / surveys held here, it ranks 253rd by tonnage — larger than 48% of that group. Their median tonnage is 2,180 GT, and the largest tenth begin at 9,452 GT. The flag most often flown by this group is United States (90 ships). The yard that appears most often against it is Wärtsilä, with 36 hulls on record.
France is the country of registry for 517 vessels in this directory, of which L'Astrolabe is the 238th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (313 ships), and the median vessel measures 2,161 GT. Browse every ship flagged France.
Narrowing to both dimensions at once, this registry holds 7 research / surveys flying the France flag, of which 3 are larger by tonnage.
L'Astrolabe 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 1,255th 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 34 vessels to Piriou Group, with a median tonnage of 437 GT, delivered between 1982 and 2024. See the rest of that yard’s output.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9797539 this registry holds 46 other vessels, whose median build year is 2018 and which range from 2015 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, 9797539, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 7×6 + 9×5 + 7×4 + 5×3 + 3×2 = 199 — and the last digit of that total, 9, must equal the seventh digit, 9. It does, so this number is well formed.
