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Open data · every figure carries its source

Largest in this registry
#67,047
of 84,014 with a recorded tonnage
Largest ferry
#674
of 882 of this type with a recorded tonnage
Largest in its fleet
#28
of 41 in this fleet with a recorded tonnage
In brief
MV Jupiter was a passenger and vehicle ferry in the fleet of Caledonian MacBrayne in the Firth of Clyde, Scotland. She was the oldest of three "streakers" and the third River Clyde ship to bear the name 'Jupiter'. Her open car deck was accessible by stern and side ramps ro-ro. She entered service in 1974, and operated the Gourock to Dunoon crossing for much of her career. In 2006, she became the oldest vessel in the CalMac fleet and continued in service with them until 2010. Jupiter was sold for breaking in 2011.
Vessel particulars
Every value is as recorded in the source. Blanks are values the source does not hold — none is estimated from a sister ship or a class average.
Identification
Construction
Measurements
In context
Every figure in this section is a count, a rank or a percentile over vessels actually held in this registry — not over the world fleet, which is larger. Nothing here is estimated.
At 898 gross tons, MV Jupiter is the 67,047th 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 6.7 times smaller than the typical vessel on record here. The largest measures 499,167 GT.
Among the 1,234 ferrys held here, it ranks 674th by tonnage — larger than 24% of that group. Their median tonnage is 3,908 GT, and the largest tenth begin at 25,454 GT. The flag most often flown by this group is Japan (241 ships). The yard that appears most often against it is Mitsubishi Heavy Industries, with 34 hulls on record.
United Kingdom is the country of registry for 2,394 vessels in this directory, of which MV Jupiter is the 1,349th largest by tonnage. The most common class under that flag is vessels this registry holds no type classification for (1,835 ships), and the median vessel measures 2,515 GT. Browse every ship flagged United Kingdom.
Narrowing to both dimensions at once, this registry holds 40 ferrys flying the United Kingdom flag, of which 16 are larger by tonnage.
MV Jupiter was built in 1974, making it 52 years old. It is one of 2,111 hulls in this registry delivered that year, a cohort whose median tonnage is 1,681 GT; within it this ship is the 1,131st largest. Across the whole of the 1970s the registry holds 17,331 vessels, median 2,774 GT. The median build year across the entire registry is 1995.
The registry attributes 10 vessels to James Lamont & Co, with a median tonnage of 802 GT, delivered between 1948 and 1979. See the rest of that yard’s output.
At 69.0 m overall, MV Jupiter is 35.0 m shorter than the 104.0 m median for ferrys on record, with a beam of 13.8 m and a draft of 2.4 m.
IMO numbers are issued in broadly chronological blocks. Within 500 either side of 7341051 this registry holds 50 other vessels, whose median build year is 1974 and which range from 1973 to 1978. That places this hull’s registration in the same part of the series, consistent with its recorded build year of 1974.
Its IMO number, 7341051, carries its own check digit. The first six digits are weighted seven down to two and summed — 7×7 + 3×6 + 4×5 + 1×4 + 0×3 + 5×2 = 101 — and the last digit of that total, 1, must equal the seventh digit, 1. It does, so this number is well formed.
Nearest by tonnage among ferrys
| Ship | Built | Gross tonnage |
|---|---|---|
| Blue Magpie | 2019 | 916 |
| MF Ølen | 1977 | 912 |
| Orcadia | 1977 | 899 |
| MV Jupiter (this ship) | 1974 | 898 |
| Whitsunday Explorer | 2009 | 891 |
| Ørland | 2006 | 884 |
| MF Lauvstad |
Same yard, same years
No ship class is recorded for this vessel, so these are not asserted to be sister ships — they are contemporaries from the same builder, shown because that is what the data supports.
Same fleet
Provenance
Vessel recordWikidata, released under CC0, keyed on this ship’s IMO number.
Written summaryQuoted from MV Jupiter (1973) on English Wikipedia, reused under CC BY-SA 4.0.
PhotographBy Dave souza, reused under CC BY-SA 3.0.
| 2007 |
| 884 |