At 9,209 gross tons, Ramform Challenger is the 37,101st 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 612 research / surveys held here, it ranks 54th by tonnage — larger than 89% 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.
The Bahamas is the country of registry for 1,614 vessels in this directory, of which Ramform Challenger is the 1,267th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (940 ships), and the median vessel measures 30,020 GT. Browse every ship flagged The Bahamas.
Narrowing to both dimensions at once, this registry holds 13 research / surveys flying the The Bahamas flag, of which 5 are larger by tonnage.
Ramform Challenger was built in 1996, making it 30 years old. It is one of 1,254 hulls in this registry delivered that year, a cohort whose median tonnage is 7,254 GT; within it this ship is the 573rd largest. Across the whole of the 1990s the registry holds 12,006 vessels, median 4,956 GT. The median build year across the entire registry is 1995.
The registry attributes 74 vessels to Langsten Slip & Båtbyggeri, with a median tonnage of 4,797 GT, delivered between 1967 and 2023. See the rest of that yard’s output.
At 86.2 m overall, Ramform Challenger is 15.2 m longer than the 71.0 m median for research / surveys on record, with a beam of 39.6 m and a draft of 7.3 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 9141455 this registry holds 73 other vessels, whose median build year is 1997 and which range from 1991 to 2000. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1996.
Its IMO number, 9141455, carries its own check digit. The first six digits are weighted seven down to two and summed — 9×7 + 1×6 + 4×5 + 1×4 + 4×3 + 5×2 = 115 — and the last digit of that total, 5, must equal the seventh digit, 5. It does, so this number is well formed.
